Archive for the ‘Summer heat tolerant’ Category

American Hornbeam – Versatile Small U.S. Native Tree

American hornbeam (Carpinus caroliniana), aka ironwood or muscle wood, grows primarily in moist, slightly acidic soils along woodland rivers and streams (USDA hardiness zones 3-9). This native hornbeam adapts to either wet or dry ground as long as soil moisture drains off, and it does not  flood over long periods. This durable small tree copes with […]

Re-blooming Poinsettia This Fall

The winter holidays may be over, but your poinsettia plant is likely still looking pretty.  If you opt to grow and re-bloom your plant next Christmas, follow this growing schedule. Keep the soil evenly moist and set the plant in bright daylight. Feed bi-monthly with a house plant fertilizer. Inspect and rid your plants of all […]

Prevent Leaf Burn on Evergreens This Winter

Winter foliage burn on evergreens is often most prevalent on boxwoods (Buxus), hollies (Ilex), rhododendron, and many kinds of conifers. Symptoms often develop when temperatures warm up in late winter and early spring. This type of winter damage is often misdiagnosed as an infectious disease or damage from excessively cold temperatures. Evergreens transpire (lose water […]

Unusual Forms Of Umbrella Pine Are Really Cool

Japanese Umbrella Pine (Sciadopitys verticillata) is a prized ornamental evergreen (USDA hardiness zones 5b -9). It is not actually a pine.  The only species within genus Sciadopitys, this conifer dates back to the dinosaurs. Umbrella pine is a mid-sized landscape tree with several fine attributes: 1. glossy green long narrow needles arranged like the spokes of a wheel; 2. peeling […]

Tips for Growing Abutilon (Flowering Maple)

Abutilon (Abutilon x hybridum) is a group of tender evergreen perennials (USDA hardiness zones 9-11). In USDA hardiness zones 6 thru 8, abutilon is grown outdoors from mid-spring to mid- autumn, when it is moved indoors and grown as a tropical houseplant. When moved indoors, partially cut back to fit its indoor space. In early spring prune the plant […]

Dieback Shrubs

Dieback shrubs are a group of hardy landscape shrubs that emerge and grow vigorously from mid-spring through early summer. They bloom reliably from late summer into early fall. Plants are near the edge of their hardiness range, and often die back to the ground in the winter. They act more like herbaceous perennials. The above-ground shoots are not […]

Stoloniferous Dogwoods Jazz Up The Winter Landscape

Red osier dogwood (Cornus sericea) is a medium-sized, deciduous shrub native to much of the Northern and Western United States (USDA hardiness zones 2-7). Without question these shrubs standout in winter by their colorful stems (see pruning recommendations below). Cut branches are an added plus for indoor arrangements. The yellow-twig form (C. sericea ‘Flaviramea’) is also available. Leaves are oblong-lanceolate […]

“No Dig” Planting Of Tulips

Digging lots of holes to plant 25 0r 50 tulip bulbs is a backbreaking chore. It doesn’t have to be that way. More than a decade ago, plant researchers at Cornell University in Ithaca, N.Y., developed a planting method called “top-planting”. It eliminates all the digging and the tulips come back and bloom well for […]

Overwintering Caladium Tubers

Dr. Mary Lewnes Albrecht, retired dean of the Herbert College of Agriculture at the University of Tennessee, offers her recipe for overwintering caladiums. For many years Dr. Albrecht has been saving several heirloom varieties by this procedure: #1.  Plants start to go dormant in late September through October (zone 7a Tennessee) and earlier if summer […]

Umbrella Pine—A Conifer Collector’s Dream Plant

  Japanese Umbrella Pine (Sciadopitys verticillata) is an evergreen (USDA hardiness zones 5b -9). It is not actually a pine.  Historically, umbrella pines date back to the dinosaur age. This mid-sized landscape tree displays several fine attributes: shiny leaves are arranged in whorls like the spokes of an umbrella; peeling, reddish brown bark and a […]