Pruning Effects on the Cold Hardiness of `Haggerston Gray' Leyland Cypress and `Natchez' Crape Myrtle

in HortScience
View More View Less
  • 1 Department of Horticulture, Georgia Station, Griffin, GA 30223
  • | 2 Department of Horticulture, University of Georgia, Athens, GA 30602

The effects of late summer, fall, and winter pruning on the cold hardiness of × Cupressocyparis leylandii (A.B. Jacks. and Dallim.) Dallim. and A.B. Jacks. `Hag gerston Gray' (Leyland cypress) and Lagerstroemia L. `Natchez' (crape myrtle) were determined. Pruning in late summer through early winter significantly reduced the cold hardiness of both taxa. The maximum difference in cold hardiness between pruned trees and controls for × Cupressocyparis leylandii `Haggerston Gray' in October, December, January, and February was 3, 3, 2, and 6C, respectively. The maximum difference in cold hardiness between pruned plants and controls for Lagerstroemia `Natchez' in December, January, and February was 3, 4, and 2C, respectively. Early spring pruning of Leyland cypress and late winter or early spring pruning of crape myrtle are suggested from these data.

All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 151 15 3
PDF Downloads 175 65 17