Archive for the ‘Southern Appalachian Region’ Category

Boxwood Blight Discovered on Pachysandra

In June 2012 plant pathologists at the Connecticut Agricultural Experiment Station have confirmed a natural infection of pachysandra in the landscape by boxwood blight (Cylindrocladium pseudonaviculatum), the boxwood blight fungus. The infection originated from recently installed balled and burlapped (B&B) boxwood plants. A plant inspector in Fairfield, CT noticed that an established bed of pachysandra […]

‘Morning Grace’ Spiderwort Is A Delicate Beauty

  Morning Grace spiderwort (Tradescantia rosea ‘Morning Grace’) is a short growing spiderwort native from Maryland south to Florida. Its small size and clumping nature makes it a wonderful rock garden plant. It grows into 8″ tall x 8″ wide clump of narrow medium green leaves. At first glance this spiderwort’s foliage appears very grass-like. […]

Yellow Nutsedge Control Is In Your Hands

Yellow nutsedge, aka “nutgrass” (Cyperus esculentus) is a nasty weed found in lawn and garden areas. It is a sedge, and not a grass, and methods of eliminating it vary. Yellow nutsedge is easily identified by its yellow to light green glossy leaves and the triangular shape of the stem. It grows most actively during […]

Hollyhock Rust Prevention Tips

Hollyhocks (Alcea rosea) are old-fashioned perennials (and biennials) which are currently finding a new audience. There are numerous cultivars differing in plant height from 5 to 9 feet and spread of 1 to 3 feet. Flowers come in single and double forms and in many color shades. Hollyhocks are hardy to USDA hardiness zone 4. […]

‘Sunburst’ Golden St. John’s Wort

Our native golden St. John’s wort (Hypericum frondosum) deserves more planting space in U. S. gardens (USDA hardiness zones 5-8). ‘Sunburst’ is the leading cultivar and exhibits superior traits over the species. Golden St. John’s wort forms a small, dense growing deciduous shrub, noted for its showy golden yellow flowers and attractive blue-green foliage. Sunburst grows more compact […]

‘Brigadoon’ Hypericum Wakes Up a Garden Bed

The bright chartreuse (almost golden) foliage Brigadoon St. John’s wort (Hypericum calycinum ‘Brigadoon’) can brighten up almost any dull garden spot. This Euro-Asian ground cover thrives in any well-drained soil under full to partial sunlight (USDA zones 4-7). Full sun may burn the summer foliage in zone 7. ‘Brigadoon’ grows 12 to 16 inches tall and spreads […]

Selecting The Right Ivy For Your Garden

Have you taken the “No Ivy Pledge”? I have not. In an effort to slow defections from growing ivy, the American Ivy Society has developed a list of non-invasive cultivars. It includes several dwarf English ivy cultivars (Hedera spp.). Add a little water and fertilizer and these mini-ivies do not miss a beat. Mini- ivies […]

Promising Hemlock Adelgid Research

Proper care of hemlock trees is important for their survival. Hot dry summer weather appears to slow population growth. During periods of severe drought, shallow rooted hemlock trees should be irrigated. Prune dead and dying branches from trees to promote new growth. Also, limit the amount of nitrogen fertilizers to hemlock(s), as it promotes heavier […]

Pest Update – More Pesticide Options Available Against Hemlock Adelgid

You may be able to prevent or save tree and shrub hemlock(s) from woolly adelgid. This serious pest has two generations per year. The first generation hatches in March and April from overwintering adults (as many as 300 eggs per adult) in white cottony masses on the small twigs. The crawlers (nymphs) hatch and feed in […]

Vintage ‘Strawberry Candy’ A Sensational Daylily Performer

Some vintage daylily varieties are timeless performers.  Strawberry Candy daylily (Hemerocallis x ‘Strawberry Candy’) is a daylily classic, one of the first to open in June in Southern Appalachian gardens (USDA hardiness zones 6 and 7). Its grass-like foliage is semi-evergreen here. The 4- inch diameter flowers open strawberry pink with a prominent rose red eye […]