1. Home
  2. Question and Answer
  3. Houseplants
  4. Garden Articles
  5. Most Popular Plants
  6. Plant Nutrition

Colorado Blue Spruce Heat Stress: Competition and Watering

Five spring-planted Colorado blue spruce in WV clay soil. Morning shade, afternoon sun. Watered weekly/biweekly. 10-day heat wave: 3 fine, 1 browning new growth, 1 starting.

Core Problem

Surrounding vegetation outcompetes young trees for water. Clay soil dries fast in heat.

Solution

  1. Spray glyphosate (Roundup) in 3-ft radius around each tree. Shield spruce from drift.
  2. Expand mulch to cover cleared area.
  3. Water deeply until soil wet 3–4 inches down.
  4. Mulch + less competition + more water = recovery.

Copyright © www.100flowers.win Botanic Garden All Rights Reserved