Archive for the ‘mulching’ Category

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 […]

Spring Star Flowers (Ipheion)

Spring star flowers (Ipheion uniflorum), native to Argentina and Uruguay, feature grass-like foliage and 6-petaled star-shaped flowers on 3-6 inches tall stems in early spring (April). Each bulb produces multiple flowering stems. Flowers range in color from almost white to violet blue and emit a mild spicy fragrance. In addition the grassy foliage gives off an oniony […]

Fertilizing Trees And Shrubs

Maintaining good  plant nutrition is of key importance. A tree and shrub which is growing vigorously can resist infestation from most diseases and insects. Symptoms of poor nutrition: pale green or chlorotic leaves; undersized plants;  slower annual growth rate; many dead or dying branch tips; increased insect/disease problems. Trees under 10 years of age should be fertilized annually. There is little need to […]

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 […]

Ten Native Shrubs Possessing Great Fall Leaf Color

Some native U.S.  landscape shrubs are not only great spring/summer flowering shrubs, but their fall foliage color(s) are an added attraction. Here are ten of my favorites listed alphabetically by genus: Bottlebrush Buckeye (Aesculus parvifolia) – foliage of this summer flowering shrub turns bright yellow in fall. (zones 4-8) Red Chokeberry (Aronia arbutifolia) – under-planted native shrub that […]