Crape myrtles are dependable trees and shrubs in zones 7 – 10. In northern areas of USDA zone 6, a number of crape myrtle varieties (cultivars) are rated as winter hardy perennials but not develop into a full sized woody tree or shrub described on the plant tag. In northeastern U.S. cities such as Philadelphia, Wilmington or Baltimore, crape myrtles […]
Archive for the ‘winter injury’ Category
Colorful Oleanders For Hot Summer Climes
Oleander (Nerium oleander) is an attractive evergreen shrub for warm climates. Indigenous to the Mediterranean region, it is popular in warm regions of the U.S., namely in western, coastal, and southern states (USDA hardiness zones 8-11). Oleander prefers moist, well-drained soil and a sunny landscape site. Established shrubs withstand dry and windy conditions along coastal areas. Brightly colored […]
My Search Continues For A Hardy Gardenia
The longer you garden, many plant species keep improving, including their winter hardiness. A few years ago, growing gardenias (Gardenia jasminoides) in a U.S. zone 6 garden was a dream. Today, hardy gardenias are a safe bet in zone 7 or in zone 6 in a protected area of […]
Winter Damage On Crape Myrtles
Extremely cold winters of 2013-14 and 2014-15 have damaged many cultivars of crape myrtles (Lagerstroemia x indica). Don’t assume that new crape myrtles are hardy; many are rated hardy only to zone 7. Several of the U.S. National Arboretum cultivars are hardy in zone 6. Gardeners living in the […]
Pampas Grass – Have We Learned A Lesson?
Many areas in the mid-South and northeast U.S. (USDA hardiness zones 6 and 7a) learned a hard lesson in the harsh cold winter of 2013-14. Over the past decade gardeners had been lulled into zone bending, insisting on planting species from a warmer zone. One of them was pampas grass (Cortaderia selloana). Very few clumps survived here […]
Old-fashioned Star Magnolias Very Beautiful Start Of Spring
Star magnolia (Magnolia stellata) is a multi-branched shrub or small tree which is native to Japan (USDA hardiness zones 4 to 8). This early flowering magnolia is noted for its compact form. A mature tree form grows 15 to 25 feet tall, 10 to 20 feet wide, and […]
Hiring A Tree Service
The trees around your home do much more than provide seasonal beauty and cooling shade in the summer months. Just as you need to get an occasional haircut, trees (and shrubs) need pruning as well. Homeowners should invite a trained arborist to inspect their trees every 5 -7 years. First, select a tree pruner who is licensed and […]
Determining A Plant’s Cold Hardiness
On-line nursery catalogs and plant labels at garden centers list the hardiness of the trees, shrubs, vines, and perennials that they sell. Many years ago the U.S. Department of Agriculture (USDA) developed the hardiness rating scale based on geographic location from northern Canada to southern Mexico. Most U.S. gardeners live within Zones 3 to 11. Don’t know […]