Yellowing leaves or nutrient concerns should be diagnosed before fertilizer is applied. Learn about our diagnostic Plant Health Care services, soil testing, and targeted trunk or soil treatments.
Fall is one of the best times to look closely at the trees around your home. The canopy is easier to read as leaves change and drop, cooler weather reduces heat stress, and there is still time to address certain problems before winter wind, snow, and ice arrive.
Soil moisture is not uniform across Indiana right now. Central Indiana experienced major flooding in August, including locations that received more than 11 inches of rain, while the September 15 U.S. Drought Monitor introduced abnormally dry conditions in parts of northern Indiana after a mostly rain-free week. The practical takeaway is to check the actual site—not the calendar or a single regional rainfall total—before deciding whether a tree needs water.
Probe several inches below the surface in multiple locations beneath the canopy. Avoid adding water to a saturated root zone, but do not assume heavy rain from several weeks ago means newly planted or stressed trees cannot become dry later. If the soil remains wet, roots smell sour, the root plate is moving, or the tree has developed a new lean, review our guide to saturated soil, root stress, and uprooting risk.
Current-condition references: NWS Indianapolis August flooding summary and the U.S. Drought Monitor, data valid September 15, 2026.
1. Walk the property before leaves are gone
Look at each tree from several directions and compare it with earlier photographs when possible. Note branches that failed to leaf out, sections that changed color much earlier than the rest of the canopy, unusually small leaves, or dieback concentrated at the top.
Also look at the ground. New soil cracks, lifting roots, cavities at the base, fungal fruiting bodies, and a changed lean can be more important than cosmetic leaf damage. If a tree could reach a home, garage, driveway, road, or utility, give structural changes extra attention.
2. Separate normal fall color from possible stress
Timing varies by species, weather, and site. One tree may begin changing color before a neighbor without being unhealthy. Concern increases when color change is dramatically early, limited to one side, paired with thinning or branch death, or repeated in the same tree over multiple seasons.
Maples and some other trees can develop interveinal chlorosis, where leaf tissue turns yellow while veins remain green. High-pH soil and nutrient availability can be involved, but proper diagnosis matters before treatment. Soil testing and a tree-health evaluation are more useful than guessing with fertilizer.
3. Check for dead, broken, or weak branches
Deadwood does not always require emergency removal, but larger dead branches over frequently used areas deserve attention. Look for hanging limbs, cracks at branch unions, broken tops, old topping cuts, and branches rubbing a roof or structure.
Professional tree trimming and pruning should be based on a clear objective: removing dead or damaged wood, improving young-tree structure, providing clearance, or reducing specific risk. Removing too much live foliage can stress a tree and create weak regrowth.
4. Review storm exposure and tree risk
Indiana winter weather can load branches with wet snow or ice and expose existing defects. Before winter, pay particular attention to trees with recent storm damage, multiple competing stems, cavities, a new lean, root disturbance, or large branches over occupied areas.
No checklist can predict every failure. A professional assessment considers the likelihood of failure, the part likely to fail, the target, and the consequences. Learn more about warning signs of a potentially dangerous tree.
5. Protect roots and soil
Roots remain active after leaves fall while soil temperatures are favorable. Keep vehicles, equipment, and material piles off the root zone, especially when soil is wet. Compaction reduces the air spaces roots need.
- Maintain a broad layer of organic mulch where practical.
- Keep mulch away from direct contact with the trunk and root flare.
- Correct drainage problems carefully; grading and trenching can cut roots.
- Water newly planted trees during dry fall periods until the ground freezes.
- Avoid routine fertilization without evidence that it is needed.
6. Decide whether fall planting fits the site
Cooler temperatures can make fall a useful planting window because roots can establish without summer heat. Species choice and planting depth matter more than speed. Match the tree’s mature size, moisture needs, light requirements, and tolerance to the actual site.
Locate the root flare at or slightly above finished grade, provide adequate rooting space, and avoid planting large-maturing trees where future conflicts with utilities or structures are inevitable.
7. Plan pruning by tree and objective
Late fall is not automatically the right pruning time for every tree. Dormant-season pruning is often useful because structure is visible and many pests are less active, but species, disease risk, and the purpose of the cut matter. Emergency removal of a broken or hazardous branch should not wait for an ideal calendar window.
Our guide to the best time to prune trees in Indiana explains how timing changes by goal and tree type.
8. Remove leaves and debris thoughtfully
Fallen leaves are valuable organic matter, but diseased material may need different handling. For certain foliar diseases, removing heavily infected leaves can reduce overwintering inoculum. Recommendations depend on the confirmed problem, so use Indiana-specific guidance from Purdue Extension when disease is suspected.
9. Prepare an emergency plan before winter storms
Know where household members should stay if a damaged tree threatens the home, keep vehicles out of obvious fall zones, and never approach a tree or limb contacting electrical conductors. Save the number for a qualified emergency provider before severe weather arrives.
Modern Tree Solutions provides 24-hour emergency tree service and storm response across its Central Indiana service area.
When to request a professional evaluation
Schedule an evaluation when you see a new lean, root-plate movement, large dead branches over a target, significant cavities or decay, worsening canopy decline, construction damage, or symptoms you cannot confidently identify. A diagnosis may lead to monitoring, pruning, plant health care, or removal when risk cannot be reduced appropriately.
Fall tree care questions
Should every tree be pruned in fall?
No. Pruning should serve a specific purpose and account for species, age, condition, and disease concerns.
Should I fertilize trees before winter?
Not automatically. Nutrient treatments should respond to a diagnosed need and site conditions. More fertilizer is not always better.
Is a mushroom near a tree always dangerous?
No, but mushrooms at the trunk or major roots can sometimes be associated with decay. Identification, location, and the condition of the tree matter.