Question 1

When is the best time to prune most trees?

Accepted Answer

For the majority of deciduous trees, late winter dormancy — January through February in most US regions — is the optimal pruning window. During dormancy, the tree is not actively transporting nutrients, wound compartmentalization is most efficient, and most fungal pathogens are inactive. The only major exception is spring-flowering trees (dogwood, crabapple, lilac), which should be pruned immediately after they finish blooming to preserve next year's flower buds.

Question 2

Why can't I prune oak trees in spring or summer?

Accepted Answer

Oak wilt, caused by the fungus Bretziella fagacearum, is one of the most destructive tree diseases in the US. Sap beetles are attracted to fresh pruning wounds from approximately March through October, and these beetles can carry the fungal spores from infected trees to healthy ones. Pruning during winter when temperatures are consistently below 40-50°F eliminates beetle activity and the associated transmission risk. In Texas and parts of the Upper Midwest, even a single improper pruning cut in spring can introduce oak wilt to an otherwise healthy tree.

Question 3

Is fall planting or spring planting better for new trees?

Accepted Answer

Fall planting is often superior for most deciduous trees in temperate climates. Trees planted in fall go through winter with reduced moisture demands (no leaves) while their roots continue to grow in warm soil. By spring, a fall-planted tree often has 4-6 months of root establishment compared to a spring-planted tree. The key timing requirement for fall planting is to get the tree in the ground at least 6 weeks before the first hard freeze so the root system has time to anchor before dormancy. Spring planting is preferred in climates with late-season frosts or for heat-loving species.

Question 4

Do trees actually need fertilizing?

Accepted Answer

Most established trees growing in healthy soil do not require annual fertilization. Trees in maintained lawns (which receive regular lawn fertilizer) and trees growing naturally in woodland settings typically have adequate nutrients. Fertilization is most beneficial for: young trees in their first three years, trees showing nutrient deficiency symptoms (yellowing leaves, poor growth), trees growing in compacted or nutrient-poor urban soils, and trees recovering from significant stress or damage. When fertilization is warranted, the best timing is early spring as roots begin active growth, or late fall after leaves drop when roots are still absorbing nutrients for winter carbohydrate storage.

Question 5

How far in advance should I schedule tree services?

Accepted Answer

Lead times vary significantly by season and region. Dormant season pruning (January-February) typically has the shortest wait times as this is the off-peak period for most tree service companies. Spring (March-May) and post-storm periods are the busiest, and you may wait 3-6 weeks for non-emergency work. For large projects — significant tree removal, multi-tree pruning, or crane work — plan to contact arborists at least 4-6 weeks in advance. Emergency services (hanging limbs, uprooted trees) are typically prioritized and scheduled within 24-72 hours by reputable companies.

Question 6

What tree care tasks can I skip in drought years?

Accepted Answer

During drought years, the priority hierarchy shifts significantly. Watering becomes the single most important task — all other maintenance is secondary to keeping trees alive through drought stress. Tasks to deprioritize or skip during drought: major pruning (which adds stress to an already-stressed tree), heavy fertilization (salts in fertilizer can damage drought-stressed roots), and new planting (trees planted during severe drought have very poor survival rates without extraordinary irrigation commitment). Tasks to maintain or increase: deep watering on a consistent schedule, mulching to retain soil moisture, and inspection for secondary pest and disease problems that commonly attack drought-weakened trees.

Service	Best Season	Primary Reason
Deciduous tree pruning	Late winter (Jan-Feb)	Full dormancy, lowest disease risk, bare canopy
Oak pruning	Winter only (Dec-Feb)	Eliminates oak wilt vector beetle activity
Spring-flowering trees	Right after bloom	Preserves next year's flower buds
Fruit tree pruning	Late winter before bud swell	Maximizes fruit production, shapes structure
Tree removal	Any time (best: dormant)	Dormant season: frozen ground protects lawns
Spring planting	After last frost date	Soil warm enough, no frost risk, cool air
Fall planting	6 weeks before first frost	Warm soil, reduced transplant stress, winter root growth
Fertilization	Early spring or late fall	Aligns with active root growth periods
Mulching	Spring (after soil warms)	Retains moisture heading into dry months
Storm preparation	Late summer / early fall	Before peak storm season; time to address issues
Pest inspection	Early spring (March-April)	Catch emerging populations before establishment
Drought watering	May-September	Peak evapotranspiration and soil dry-down period

Seasonal Tree Care Calendar

Why Seasonal Timing Is Critical for Tree Care

Quick Reference: Service Timing at a Glance

Frequently Asked Questions