Transcript Crop Tree Release - Vermont Family Forests

Crop Tree Release
Mary Sisock, Ph.D.
UVM Extension Forestry
Crop Trees?
Trees that produce or have the potential to produce
desired benefits.
What are your Objectives?
• Forest health (vigor)
• Improve wildlife values
• Enhance aesthetics
• Increase the quality or quantity of forest products
Selecting a Crop Tree
Criteria will vary by
objective
Wildlife
• Crown is large, healthy, and in or above the main canopy.
• Mast-producing species (prefer hard over soft).
• Trees with dead branches and open cavities are desirable.
• Species variety is highly desirable.
• Expected longevity of 20+ years.
Timber
• Crown is large, healthy, and in or above the main canopy.
• High-value commercial species.
• High-quality tree with:
• No defects
• No sprouts on butt log.
• No lean, low forks, etc.
• Species well adapted to the site.
• Expected longevity of 20+ years.
AESTHETICS
• Select trees and species that are:
• unique in appearance or character,
• produce attractive flowers and colorful foliage
• have attractive or unique bark.
Longevity of 20+ years.
Trees Compete
• Light
• Water
• Space
• Nutrients
Releasing from Competition
1
2
4
3
Free to Grow