tree & shrub pruning naperville community gardens march 5, 2012 stan holat autumn tree...
TRANSCRIPT
Tree & Shrub Pruning
Naperville Community GardensMarch 5, 2012
Stan HolatAutumn Tree
Pruning?
Pruning Locations
3-Cut Branch Removal
Why do we prune?
• Aesthetics• Risk Reduction• Plant Health• Plant Growth Rate• Tree structure-Subordinate Pruning
Tree Structure
Full length before
Close up before
Close up before 2
2nd Cut
Close up after
Close up after
Close up reverse side
Full length after
Procedure
1. Choose straightest leader to remain.2. Look for location to cut down to (1/2 of the
length)3. Try to keep the current shape.4. Remove smaller competing branches.
Deciduous Shrub Pruning
Shrub Pruning Guidelines
• Know your shrubs
• Desired form• Arrangement
Know your shrubs
• Species• Cultivar/variety• Characteristics• History• Site
Shrub Form
• Formal • Natural
Arrangement
• Hedge
• Foundation
• Grouped
Methods of shrub pruning
• Shearing/Shaping• Heading• Renewal• Rejuvenation
Shearing/Shaping
• Formal• Higher
Maintenance• Caution of “dead
zone”• Foliage Shell• Insect problems?
Hedge Tapering
• Bottoms must be wider than top to allow sunlight to lower branches to keep them green
Heading
• Maintain existing form
• Thinning and cutting back to laterals
Heading
• Heading to maintain size• Heading cut
Renewal Pruning
• Stimulates new growth throughout shrub
• Remove older stems
• Prune out 1/3rd each winter
Rejuvenation
• Cut ALL stems low