Aleppo Pine Tip Wilt: Heat, Wind, and Water Management in Tucson

Physiology: Soft Tips = Water Balloons

New growth (candles) is mostly water, flexible. When transpiration > uptake, tips droop. Wind (50 mph gusts) accelerates water loss dramatically.

Observation Confirms Diagnosis

• Deep soak → tips recover overnight.
• Wind event → tips bend INTO wind (dehydration side).
• Tree is healthy—vigorous growth = good root function.

Management

• Water every other day during hot/windy periods until tips harden (turn woody).
• Once hardened, reduce to weekly deep watering.
• Mulch 3 inches to buffer soil temperature/moisture.

Long-Term

Aleppo pine (Pinus halepensis) is well-adapted to Tucson. Established trees handle heat/wind with minimal supplemental water.