https://www.timberxtrees.com/articles daily 0.75 2026-10-29 https://www.timberxtrees.com/articles/best-native-shade-trees-tucson monthly 0.5 2026-10-29 https://www.timberxtrees.com/articles/certified-arborist-vs-tree-trimmer-tucson monthly 0.5 2026-10-29 https://www.timberxtrees.com/articles/citrus-care-tucson-fertilizing-watering monthly 0.5 2026-10-29 https://www.timberxtrees.com/articles/desert-mistletoe-mesquite-palo-verde monthly 0.5 2026-10-29 https://www.timberxtrees.com/articles/heat-stress-sunscald-trees-arizona monthly 0.5 2026-10-29 https://www.timberxtrees.com/articles/monsoon-tree-prep-tucson monthly 0.5 2026-10-29 https://www.timberxtrees.com/articles/palo-verde-root-borer-arizona monthly 0.5 2026-10-29 https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/07f4df51-eda3-4b11-b9a4-b86183fa4909/Derobrachus_hovorei.jpg Articles - Palo Verde Root Borer in Arizona: Villain, or Just the Last One at the Scene? https://www.timberxtrees.com/articles/signs-tree-dying-arizona monthly 0.5 2026-10-29 https://www.timberxtrees.com/articles/tree-roots-foundations-pools-arizona monthly 0.5 2026-10-29 https://www.timberxtrees.com/articles/when-to-prune-trees-tucson monthly 0.5 2026-10-29 https://www.timberxtrees.com/articles/hormones monthly 0.5 2026-10-29 https://www.timberxtrees.com/articles/irrigation-tips monthly 0.5 2026-10-29 https://www.timberxtrees.com/articles/paloverde monthly 0.5 2026-10-29 https://www.timberxtrees.com/articles/nitrogen-fixing monthly 0.5 2026-10-29 https://www.timberxtrees.com/articles/milliontrees monthly 0.5 2026-10-29 https://www.timberxtrees.com/articles/pruning-trees-for-form-and-function monthly 0.5 2026-10-29 https://www.timberxtrees.com/articles/root-flares monthly 0.5 2026-10-29 https://www.timberxtrees.com/articles/shade-trees-hidden-savings-in-plain-sight monthly 0.5 2026-10-29 https://www.timberxtrees.com/articles/willows monthly 0.5 2026-10-29 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https://www.timberxtrees.com/tree-health-library daily 0.75 2026-11-01 https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/b40ae95a-481f-45a6-ac3a-fc5dc2d4fa35/Screenshot+2026-11-01+001639.png https://www.timberxtrees.com/tree-health-library/citrus-chlorosis-manganese-zinc-deficiency monthly 0.5 2026-11-01 https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/c6d0aaf0-6965-418a-9a5f-f09606dcb556/01-citrus-chlorosis-manganese-zinc-deficiency-1.jpg Tree Health Library - Citrus Chlorosis - Manganese & Zinc Deficiency Improved Meyer lemon (Citrus × meyeri ‘Improved’): full-size leaves with broad green bands along the midrib and main veins and soft, pale yellow-green tissue between them, even on both sides of the midrib. https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/d6d8e4da-30d1-41c5-93f4-273e7fdb4478/01-citrus-chlorosis-manganese-zinc-deficiency-2.jpg Tree Health Library - Citrus Chlorosis - Manganese & Zinc Deficiency Citrus leaf (variety not confirmed) with green veins and yellow tissue between them, the interveinal pattern of a manganese or zinc shortage. The small black specks on the surface are a separate question (speculative: insect frass or young scale; check with a hand lens). https://www.timberxtrees.com/tree-health-library/citrus-leaf-yellowing-nitrogen-root-stress monthly 0.5 2026-11-01 https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/264e5c03-4f78-43b9-9407-072338b6ab99/02-citrus-leaf-yellowing-nitrogen-root-stress-1.jpg Tree Health Library - Citrus Leaf Yellowing - Nitrogen Deficiency & Root Stress Citrus with small green fruit: many leaves are evenly pale yellow-green across the whole blade, including the veins, mixed with darker green leaves. https://www.timberxtrees.com/tree-health-library/leaf-tip-burn-salt-drip-water-stress monthly 0.5 2026-11-01 https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/7e4b9dec-122a-4545-ae3d-a98b4156cfcb/03-leaf-tip-burn-salt-drip-water-stress-1.jpg Tree Health Library - Leaf Tip Burn - Salt Buildup & Drip Water Stress Oleander (Nerium oleander) on drip irrigation along a stone wall: crisp tan dead tips on many leaves across the canopy, a sharp line between dead and live tissue, and clean new leaves at the top of each whorl. https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/b7b82154-72f8-4504-a6df-a7361cd373eb/03-leaf-tip-burn-salt-drip-water-stress-2.jpg Tree Health Library - Leaf Tip Burn - Salt Buildup & Drip Water Stress Young red oak in a small parking-lot planter, with tan, dead leaf tips and margins on otherwise green leaves. Speculative: heat and salt scorch from a hot, root-limited planter; early fall browning is a look-alike to rule out. https://www.timberxtrees.com/tree-health-library/exposed-surface-roots-shallow-watering monthly 0.5 2026-11-01 https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/97142c83-f1a0-42c8-ad85-80e7e2a03642/04-exposed-surface-roots-shallow-watering-1.jpg Tree Health Library - Exposed Surface Roots - Shallow Watering Mature Arizona Ash in a gravel yard, with long woody roots running across the soil surface away from the trunk. https://www.timberxtrees.com/tree-health-library/girdling-circling-roots monthly 0.5 2026-11-01 https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/eab7ef0f-6c0d-4886-8d33-39659fba5e51/05-girdling-circling-roots-1.jpg Tree Health Library - Girdling & Circling Roots Young tree pulled for inspection (species not confirmed): a thick root wraps across the base of the trunk at the root flare, with circling roots from the nursery container. https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/cec0e4e7-a580-45d0-ac44-47c1a34e5a9b/05-girdling-circling-roots-2.jpg Tree Health Library - Girdling & Circling Roots Root ball of a young tree with a dense mat of circling roots that kept the shape of its nursery pot. https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/f459c749-ae96-4db2-8d7a-025e76336769/05-girdling-circling-roots-3.jpg Tree Health Library - Girdling & Circling Roots Container tree with a large root looping around the trunk at the surface. https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/40a2be4e-45c4-4fb0-a35b-0d6ed1a5f6e6/05-girdling-circling-roots-4.jpg Tree Health Library - Girdling & Circling Roots Root flare of a larger tree with a girdling root pressing across a buttress root; the girdling root has been cut. https://www.timberxtrees.com/tree-health-library/buried-root-flare-planted-too-deep monthly 0.5 2026-11-01 https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/3216a3ba-214a-42a9-97c9-d5394381e564/06-buried-root-flare-planted-too-deep-1.jpg Tree Health Library - Buried Root Flare - Planted Too Deep Examples showcasing what the root flare looks like when buried. The main buttress roots which taper outward from the slender trunk are completely submerged in soil. https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/29f838e9-2b88-4f5b-b027-3a1f3196a758/06-buried-root-flare-planted-too-deep-2.jpg Tree Health Library - Buried Root Flare - Planted Too Deep Root collar excavation on a larger tree, uncovering the flare and small roots that had grown in the buried soil. The marked area shows where slight trunk taper begins to become visible, this is the start of the “flare” we are looking for when we speak of a root flare. The buttress roots at the base of the tree comprise the remainder of the flair and should be slightly above the surrounding grade. https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/b0dbfe5d-9e06-45c9-bd41-c91420a43ec1/06-buried-root-flare-planted-too-deep-3.jpg Tree Health Library - Buried Root Flare - Planted Too Deep Same tree as the first photo (appears to be olive): soil dug out into a basin around the trunk to expose the buried flare, with discolored bark where soil sat against it. This is the end result of many root flare exposure procedures. It is not pretty, and becomes a challenge to maintain keeping water and debris from re-entering the basin. Planting the tree higher, would have prevented this type of work from being needed. https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/3d856b0f-991d-47da-af3a-9e8a046b39c2/06-buried-root-flare-planted-too-deep-7.jpg Tree Health Library - Buried Root Flare - Planted Too Deep Multi-trunk tree (species not confirmed) with mulch and soil piled at the trunk base, no visible flare, and drip tubing running right against the trunk. This is a process known as volcano mulching, it is pretty common in other areas of the country, but we do occasionally see it here. Placing drip tubing directly on or against the trunk is common practice, and should be moved back as the tree ages. https://www.timberxtrees.com/tree-health-library/tree-roots-lifting-pavers-hardscape monthly 0.5 2026-11-01 https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/9b51bbdd-19f0-419e-ac32-54ba751516d2/07-tree-roots-lifting-pavers-hardscape-1.jpg Tree Health Library - Tree Roots Lifting Pavers & Hardscape Multi-trunk landscape tree (species not confirmed) growing beside a paver patio; pavers nearest the trunk are tilted and lifted above their neighbors. https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/a7ec8a1b-e333-42bf-b6bf-23b503370010/07-tree-roots-lifting-pavers-hardscape-4.jpg Tree Health Library - Tree Roots Lifting Pavers & Hardscape Patio pavers next to the same tree with uneven joints and raised edges, typical of roots growing just under the base material. https://www.timberxtrees.com/tree-health-library/citrus-thrips-leafminer-damage monthly 0.5 2026-11-01 https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/f68cf849-df68-478c-b0fa-fa8ff6c8893e/08-citrus-thrips-leafminer-damage-1.jpg Tree Health Library - Citrus Thrips & Leafminer Damage Citrus leaves showing damage from citrus thrips and citrus leafminer feeding. https://www.timberxtrees.com/tree-health-library/sapsucker-damage-drilled-holes monthly 0.5 2026-11-01 https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/b0e09111-988c-4744-8148-ba801243dba8/09-sapsucker-damage-drilled-holes-1.jpg Tree Health Library - Sapsucker Damage - Rows of Drilled Holes Landscape shade tree trunk (species not confirmed from the photo) with many small, square-to-round holes drilled in loose horizontal rows through the bark. https://www.timberxtrees.com/tree-health-library/wood-boring-beetle-galleries-exit-holes monthly 0.5 2026-11-01 https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/bf6a192c-6f8d-48ce-86d6-5618a58682c3/10-wood-boring-beetle-galleries-exit-holes-1.jpg Tree Health Library - Wood-Boring Beetle Galleries & Exit Holes Dead trunk wood with the bark gone (species not confirmed), showing winding insect galleries etched into the wood surface and a round exit hole. https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/9e90f51a-5b26-49f8-8c1e-758c70c0600c/10-wood-boring-beetle-galleries-exit-holes-2.jpg Tree Health Library - Wood-Boring Beetle Galleries & Exit Holes Trunk of a landscape tree (species not confirmed) with a long strip of dead bark gone; the bare wood shows round exit holes. The strip pattern is typical of sunscald that borers then attack. https://www.timberxtrees.com/tree-health-library/sphinx-moth-caterpillars-hornworms monthly 0.5 2026-11-01 https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/6acda995-de46-4966-8cc5-027519148876/11-sphinx-moth-caterpillars-hornworms-1.jpg Tree Health Library - Sphinx Moth Caterpillars - Hornworms on Trees & Shrubs Large green sphinx moth caterpillar (family Sphingidae; exact species and host plant not confirmed) on a twig, with diagonal pale side stripes and a horn at the tail end. https://www.timberxtrees.com/tree-health-library/leaf-spot-disease-brown-spots-yellow-halos monthly 0.5 2026-11-01 https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/4704b653-2aac-4cbb-82f8-f0d28b0b9c0a/12-leaf-spot-disease-brown-spots-yellow-halos-1.jpg Tree Health Library - Leaf Spot Disease - Brown Spots with Yellow Halos Broadleaf fruit tree (appears to be mango or avocado; confirm on site) with scattered brown, sunken spots ringed by yellow halos across the leaf. The trunk in the background is wrapped with wire, which should be checked as well (see Trunk Girdling from Wire & Ties). https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/9eb95455-ac2e-4cf3-87eb-4c7398043ca7/12-leaf-spot-disease-brown-spots-yellow-halos-2.jpg Tree Health Library - Leaf Spot Disease - Brown Spots with Yellow Halos Fig (Ficus carica) leaf with dark brown blotches running between the veins and gray-white fungal growth on the oldest lesions. Speculative: a fungal leaf spot or leaf blight of fig; confirm with a lab sample before treating. https://www.timberxtrees.com/tree-health-library/wood-decay-fungi-old-wounds monthly 0.5 2026-11-01 https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/d6868314-377a-4da2-bdac-1b4abc0120ea/13-wood-decay-fungi-old-wounds-1.jpg Tree Health Library - Wood Decay Fungi at Old Wounds Mesquite (Prosopis sp.) with a fungal fruiting body (cream-colored, bracket-like growth) emerging next to an old, large pruning cut. https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/ffe15a8e-f4ac-4690-a72e-923dd4d6e445/13-wood-decay-fungi-old-wounds-3.jpg Tree Health Library - Wood Decay Fungi at Old Wounds Cut section of a decayed trunk with soft, wet wood and termites working in it; insects often move in after decay. https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/39d1f1f0-6407-4cd2-bb1c-c100be6aec3e/13-wood-decay-fungi-old-wounds-4.jpg Tree Health Library - Wood Decay Fungi at Old Wounds Freshly cut limb on a green-barked tree (appears to be palo verde; species not confirmed) with a dark, hollow decay column in the center of the cut and sound, sapwood around the outside. https://www.timberxtrees.com/tree-health-library/citrus-canopy-collapse-leaf-drop-dieback monthly 0.5 2026-11-01 https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/a09391b0-9414-47f0-b4bc-2a6fce99409d/14-citrus-canopy-collapse-leaf-drop-dieback-1.jpg Tree Health Library - Citrus Canopy Collapse - Sudden Leaf Drop & Dieback Citrus (fruiting; appears to be grapefruit or orange) with most of the canopy suddenly dried out: brown leaves still hanging, fruit still on the branches, and only a few green shoots left. https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/ca5dd99d-4e4c-4b64-8446-a7d8a912209f/14-citrus-canopy-collapse-leaf-drop-dieback-2.jpg Tree Health Library - Citrus Canopy Collapse - Sudden Leaf Drop & Dieback The same tree from the other side, with much of the canopy bare and leaves on the ground. https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/733a27eb-8a98-4cc8-b2d1-7b267b302763/14-citrus-canopy-collapse-leaf-drop-dieback-3.jpg Tree Health Library - Citrus Canopy Collapse - Sudden Leaf Drop & Dieback Base of the same tree: dropped leaves under the canopy and drip tubing looped tightly around the trunk. https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/a3957bd0-832e-45e7-8967-fa82b045acf7/14-citrus-canopy-collapse-leaf-drop-dieback-4.jpg Tree Health Library - Citrus Canopy Collapse - Sudden Leaf Drop & Dieback Close view of the trunk base: the drip loop wets only a small ring at the trunk, and many of the fallen leaves are still green. https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/68f7c069-e88e-45e6-9a69-ac4b6a82a696/14-citrus-canopy-collapse-leaf-drop-dieback-5.jpg Tree Health Library - Citrus Canopy Collapse - Sudden Leaf Drop & Dieback A fresh green shoot pushing from a main limb of the same tree, a good sign that the limb is still alive. https://www.timberxtrees.com/tree-health-library/branch-dieback-upper-canopy monthly 0.5 2026-11-01 https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/0ae38050-d29e-46d9-86b6-a483557f2301/15-branch-dieback-upper-canopy-1.jpg Tree Health Library - Branch Dieback in the Upper Canopy Mature shade tree in a backyard (Arizona ash, Fraxinus velutina), with bare, leafless branch at the top of one side of an otherwise green canopy. https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/61d1fca9-8d92-4704-90ed-cd84834c33ac/15-branch-dieback-upper-canopy-2.jpg Tree Health Library - Branch Dieback in the Upper Canopy Citrus (fruiting; type not confirmed) with thin, sparsely leaved shoots dying back at the top of the canopy while the lower canopy stays full. https://www.timberxtrees.com/tree-health-library/herbicide-damage-witches-broom monthly 0.5 2026-11-01 https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/80ebfc5c-417d-42b4-9bd6-8be5ab9f771e/16-herbicide-damage-witches-broom-1.jpg Tree Health Library - Herbicide Damage - Witches' Broom Growth Bottle tree (Brachychiton populneus) with clusters of short, crowded, knobby growth at the nodes (witches' broom) after herbicide exposure. This tree eventually had to be replaced. https://www.timberxtrees.com/tree-health-library/codominant-stems-included-bark monthly 0.5 2026-11-01 https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/e7ff642d-7c62-4ae5-b3ff-60ef4c5378ef/17-codominant-stems-included-bark-1.jpg Tree Health Library - Codominant Stems & Included Bark Mesquite (Prosopis sp.): two trunks of nearly equal size meeting in a tight V at the base, with bark pinched into the seam between them. https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/bec141b2-c972-40a7-b0c0-ebe9f4f4cf57/17-codominant-stems-included-bark-2.jpg Tree Health Library - Codominant Stems & Included Bark Second example (species not confirmed): two stems pressed together in a tight union, with a bark-lined seam and an open gap at the base of the crease. https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/f65cadad-13ee-4ec9-a9b4-26a015213227/17-codominant-stems-included-bark-3.jpg Tree Health Library - Codominant Stems & Included Bark Trunk (species not confirmed; same kind of tree as the previous example) where two stems have grown together in a tight union; a long bark-lined seam runs down from the crotch, with an old branch cut just below. https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/11396cf9-f394-4523-99b0-650ee3974151/17-codominant-stems-included-bark-4.jpg Tree Health Library - Codominant Stems & Included Bark Mesquite (Prosopis sp.) with two trunks joined in a tight union; a bark-filled seam runs down from the crotch below an old branch stub. https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/97b91149-d726-4467-9a7b-a2079d349e36/17-codominant-stems-included-bark-1.jpg Tree Health Library - Codominant Stems & Included Bark Multi-stem landscape tree (species not confirmed) with three stems forming from one point at the soil line and pressed tightly together; the bark is damaged where stems meet. https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/02436045-917f-4fad-81c7-d4eba7f6dff5/17-codominant-stems-included-bark-6.jpg Tree Health Library - Codominant Stems & Included Bark The same multi-stem tree from another angle: tight stem unions at ground level, a stub cut on one stem, and a thin stem crowded between larger ones. https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/9feac1c3-7bc5-41c9-bf75-4bb5bdce9c4e/17-codominant-stems-included-bark-7.jpg Tree Health Library - Codominant Stems & Included Bark Ash Tree (Fraxinus sp.) with five large scaffold limbs all growing from nearly the same point on the trunk. https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/d9cced17-5d37-45fd-97b9-a05480b57f3e/17-codominant-stems-included-bark-8.jpg Tree Health Library - Codominant Stems & Included Bark Young fruit tree (species not confirmed; photographed in winter outside Arizona) with colored lines marking two upright leaders growing side by side from the same point, the kind of tight union that is easiest to correct while the tree is young. https://www.timberxtrees.com/tree-health-library/branch-failure-torn-limbs monthly 0.5 2026-11-01 https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/e16555fd-1f34-4f15-8457-b73e23f65f66/18-branch-failure-torn-limbs-1.jpg Tree Health Library - Branch Failure & Torn Limbs Desert landscape tree (species not confirmed) where a large limb has broken off, leaving a jagged, splintered stub with torn wood. https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/e27ecb67-a70c-4136-851a-ac004198c21f/18-branch-failure-torn-limbs-2.jpg Tree Health Library - Branch Failure & Torn Limbs Multi-trunk tree where one stem tore out at the base, leaving a torn, splintered wound between the remaining stems. https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/73e5cfe5-f0b7-4973-8647-b3b333bd3a1f/18-branch-failure-torn-limbs-3.jpg Tree Health Library - Branch Failure & Torn Limbs Fig (Ficus carica) with side limbs torn from the trunk, leaving ragged, stripped wounds where the bark peeled down the stem. https://www.timberxtrees.com/tree-health-library/improper-pruning-cuts-stubs-flush-heading monthly 0.5 2026-11-01 https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/5b430ba5-9ff5-4b9a-b6f0-d46b6e6fedf2/19-improper-pruning-cuts-stubs-flush-heading-1.jpg Tree Health Library - Improper Pruning Cuts - Stubs, Flush Cuts & Heading Cuts Mesquite Tree with a limb cut off several inches out from the trunk, leaving a stub beyond the branch collar; an older cut sits just beside it. https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/5bb7426e-6382-4af6-9342-c027c12ca060/19-improper-pruning-cuts-stubs-flush-heading-2.jpg Tree Health Library - Improper Pruning Cuts - Stubs, Flush Cuts & Heading Cuts This cut is an example of a clean limb removal or thinning cut. The saw used was well kept and very sharp, keeping the cambium from tearing around the edges of the limb. This wound will have a better chance of concealing than a similar cut with a rough edge or poor angle. A limb like this is only removed if the majority of it is dead or actively dying, as was the case here. https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/f3102abd-736d-4e55-a488-8c0b8742e800/19-improper-pruning-cuts-stubs-flush-heading-3.jpg Tree Health Library - Improper Pruning Cuts - Stubs, Flush Cuts & Heading Cuts Palo verde (Parkinsonia sp.) with a large reduction cut on a main stem; the bark along the top edge of the cut is torn and ragged, and an older bark wound shows lower on the stem. https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/c02b941a-7bf3-43d4-a03c-eb281efee373/19-improper-pruning-cuts-stubs-flush-heading-4.jpg Tree Health Library - Improper Pruning Cuts - Stubs, Flush Cuts & Heading Cuts Two large cuts made side by side on the same limb (species not confirmed). Big wounds close together are slow to seal and can merge into one larger area of decay. https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/3e0c3472-7691-4afe-8ce3-fb56104d6688/19-improper-pruning-cuts-stubs-flush-heading-5.jpg Tree Health Library - Improper Pruning Cuts - Stubs, Flush Cuts & Heading Cuts Mesquite (Prosopis sp.) canopy with several branch stubs left from earlier pruning or breakage. https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/fef87f1c-8fbe-4028-ad4e-0ab166c43195/19-improper-pruning-cuts-stubs-flush-heading-6.jpg Tree Health Library - Improper Pruning Cuts - Stubs, Flush Cuts & Heading Cuts Mesquite (Prosopis sp.) trunk with short stubs left from earlier cuts, now pushing clusters of sprouts; a tight bark seam runs between the two stems below. https://www.timberxtrees.com/tree-health-library/trunk-wound-open-cavity monthly 0.5 2026-11-01 https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/f6318e59-1d9d-4977-abe4-d4516f6b6f48/20-trunk-wound-open-cavity-1.jpg Tree Health Library - Trunk Wound & Open Cavity Mesquite (Prosopis sp.): an elongated open wound and dark cavity in one of two trunks near the base, with exposed, weathered wood inside. https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/5d847994-a2e5-44a3-a3b4-44a450ff1bad/20-trunk-wound-open-cavity-2.jpg Tree Health Library - Trunk Wound & Open Cavity Willow Acacia trunk with a long vertical strip of dead, bare wood and a crack down the center, bordered by thick callus ridges on both sides. https://www.timberxtrees.com/tree-health-library/mechanical-trunk-damage-vehicle-equipment monthly 0.5 2026-11-01 https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/cfc189d3-ddaa-4162-8bf4-26521a50e296/21-mechanical-trunk-damage-vehicle-equipment-1.jpg Tree Health Library - Mechanical Trunk Damage - Vehicle & Equipment Impact Trunk bark knocked away by a heavy impact, exposing reddish, oozing inner tissue with torn bark around the edges (species not confirmed from the photo). https://www.timberxtrees.com/tree-health-library/trunk-girdling-wire-ties monthly 0.5 2026-11-01 https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/a4a6717e-c2b9-4adf-b3f5-3b3a77e42658/22-trunk-girdling-wire-ties-1.jpg Tree Health Library - Trunk Girdling from Wire & Ties Trunk of a landscape tree (appears to be mesquite) with several loops of wire or lighting wrapped tightly around it, and sprouts forming around the wire. https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/34032b48-0420-4df4-a730-21432c91c999/22-trunk-girdling-wire-ties-2.jpg Tree Health Library - Trunk Girdling from Wire & Ties Olive (Olea europaea) limb with a deep constriction where a wire was left on; the wood has swollen on both sides of the ring and the wire still hangs below. https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/e0999511-b388-4858-a1f0-408cc111bc00/22-trunk-girdling-wire-ties-3.jpg Tree Health Library - Trunk Girdling from Wire & Ties Young container tree with a nursery tie tape still around the trunk. Remove these after planting before they cut in. https://www.timberxtrees.com/tree-health-library/basal-suckers-trunk-sprouts monthly 0.5 2026-11-01 https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/027955bb-34ec-41f6-a4b8-d0e380b230ae/23-basal-suckers-trunk-sprouts-1.jpg Tree Health Library - Basal Suckers & Trunk Sprouts Mature shade tree in a front yard (species not confirmed from the photo), with a cluster of leafy sprouts growing from the base of the trunk. https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/a8cf5557-2787-49cd-8101-9636ba605010/23-basal-suckers-trunk-sprouts-2.jpg Tree Health Library - Basal Suckers & Trunk Sprouts Queensland Bottle tree with a knobby trunk where old cuts were made, now covered with clusters of upright sprouts. https://www.timberxtrees.com/tree-health-library/normal-fall-leaf-yellowing-drop monthly 0.5 2026-11-01 https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/f067b6d2-8e08-4a66-8818-1127ad246465/24-normal-fall-leaf-yellowing-drop-1-inset.jpg Tree Health Library - Normal Fall Leaf Yellowing & Drop - Not a Disease Young cottonwood (Populus): interior and older leaves turning yellow ahead of fall leaf drop, while the outer leaves are still green. https://www.timberxtrees.com/tree-health-library/orange-dog-caterpillars-giant-swallowtail-citrus monthly 0.5 2026-11-01 https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/9e0b02d6-7d74-47dd-bf75-7372cc7a9c2b/25-orange-dog-caterpillars-giant-swallowtail-citrus-1.jpg Tree Health Library - Orange Dog Caterpillars - Giant Swallowtail on Citrus Giant swallowtail caterpillar (orange dog; Papilio cresphontes / P. rumiko, exact species not confirmed) found under a citrus tree, with its orange, forked scent horn (osmeterium) pushed out as a defense. The brown-and-cream coloring mimics a bird dropping. https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/d6ef67b8-8087-4c1b-8135-d7be68b04132/25-orange-dog-caterpillars-giant-swallowtail-citrus-2.jpg Tree Health Library - Orange Dog Caterpillars - Giant Swallowtail on Citrus Giant swallowtail chrysalis hanging on a citrus twig, colored and textured to pass for a broken bark stub. https://www.timberxtrees.com/tree-health-library/category/Disease monthly 0.5 https://www.timberxtrees.com/tree-health-library/category/Nutrients+%26+Water monthly 0.5 https://www.timberxtrees.com/tree-health-library/category/Roots monthly 0.5 https://www.timberxtrees.com/tree-health-library/category/Structure+%26+Wounds monthly 0.5 https://www.timberxtrees.com/tree-health-library/category/Pests monthly 0.5 https://www.timberxtrees.com/tree-health-library/category/Seasonal+%2F+Normal monthly 0.5 https://www.timberxtrees.com/tree-health-library/tag/Tucson monthly 0.5 https://www.timberxtrees.com/tree-health-library/tag/nitrogen monthly 0.5 https://www.timberxtrees.com/tree-health-library/tag/surface+roots monthly 0.5 https://www.timberxtrees.com/tree-health-library/tag/yellow+leaves monthly 0.5 https://www.timberxtrees.com/tree-health-library/tag/salt+burn monthly 0.5 https://www.timberxtrees.com/tree-health-library/tag/chlorosis monthly 0.5 https://www.timberxtrees.com/tree-health-library/tag/citrus monthly 0.5 https://www.timberxtrees.com/tree-health-library/tag/deep+watering monthly 0.5 https://www.timberxtrees.com/tree-health-library/tag/root+stress monthly 0.5 https://www.timberxtrees.com/tree-health-library/tag/irrigation monthly 0.5 https://www.timberxtrees.com/tree-health-library/tag/watering monthly 0.5 https://www.timberxtrees.com/tree-health-library/tag/drip+irrigation monthly 0.5 https://www.timberxtrees.com/tree-health-library/tag/micronutrients monthly 0.5 https://www.timberxtrees.com/tree-health-library/tag/shade+trees monthly 0.5 https://www.timberxtrees.com/tree-health-library/tag/leaf+scorch monthly 0.5 https://www.timberxtrees.com/home daily 1.0 2026-06-16 https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/641dde72-4197-4df8-af96-4ed5c8609006/Screenshot+2026-10-29+144633.png https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/32015007-12e1-4b74-b927-892af84646ad/310e866c-993e-4221-96d5-6a886865005d.jpg https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/6124d503-cc92-4c23-8db5-a1c0e1d26a9b/Vet+Climber+web+graphic.png https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/d0307088-68a9-4ff8-8773-fa1c62586304/61242619-00be-423b-be92-5882afa9cc82.png https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/5d152607-3d72-4b91-bfa1-c69281a04cdc/Smartscape+certified.jpg https://www.timberxtrees.com/about daily 0.75 2026-10-26 https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/7dcc8fc4-e299-4cb0-b5cd-1c44aaf762d2/ig_arborist_climbing.jpg https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/40d7b96f-77da-4a77-a037-21036fd5ad3a/TIMBERx+Recessed+Logo.png https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/a2ea2345-59dd-4d86-a848-cc75ab8c075d/Me_Climbing_Portrait-5+copy.jpg https://www.timberxtrees.com/book daily 0.75 2026-10-26 https://www.timberxtrees.com/foodforest daily 0.75 2026-02-07 https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/2cac1644-9327-416e-bfff-91691243dee5/20231114-20231114-NZF_5915-Enhanced-NR.jpg https://www.timberxtrees.com/tree-trimming-tucson daily 0.75 2026-10-26 https://www.timberxtrees.com/tree-service-sahuarita daily 0.75 2026-10-26 https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/8bd90a96-6552-4379-b0ae-87bd65dd972e/Screenshot+2026-10-29+150441.png https://www.timberxtrees.com/tree-service-green-valley daily 0.75 2026-10-26 https://images.squarespace-cdn.com/content/v1/687f40f887fed9072b713b89/e6d0884b-b346-40b5-83f5-e47be69bd122/Screenshot+2026-10-29+150432.png https://www.timberxtrees.com/services daily 0.75 2026-10-27