Archive for the ‘Disease resistant’ Category

‘Sweet Tea’ Heucherella Offers Year-round Foliage Color Splash

Heucherella or foamy bells is a hybrid derived from crossing U.S. native foamflower, (Tiarella spp.), with coral bell (Heuchera villosa), another U.S. native. Terra Nova Nurseries, a wholesale grower in Oregon, has introduced several of these hybrids. Heucherellas bring out the best traits of both parents. Their small creamy white, bell-shaped flowers open in late […]

Promising New American Chestnuts Arriving

Chestnut blight (Diaporthe parasitica Murrill) was first discovered in the Bronx Zoo in 1904. By 1911 the headline in The New York Times read – “All Chestnut Trees Here Are Doomed”. Over the next half century, the pandemic eliminated four billion trees. Today, the airborne bark fungus still persists in the soil and on diseased […]

Variegated Solomon’s Seal Designated 2013 Perennial Plant of the Year

Variegated Solomon’s seal ( Polygonatum odoratum ‘Variegatum’) is one of the finest perennials for the shade or woodland garden. It is the Asian cousin of U.S. native Solomon seal (P. commutatum). Both species are long- lived garden inhabitants. Variegated Solomon’s Seal handles 2-3 hours of direct morning sunlight in the Southern Appalachian region (USDA hardiness zones 6 and […]

Muhly Grass Pink Color Emblazens The Autumn Season

For most of the season Muhly grass (Muhlenbergia capillaris) grows pretty much unnoticed. Muhly exhibits a semi- erect growth habit, 3-4 feet in height and 3-4 feet in spread.  Walking past a pink billowy inflorescences of Muhly on a brisk sunny October morning is nothing short of “wow”. For 10- 12 weeks, from early September thru late November, a pink haze arises […]

Growing Full Moon Maple in the Southeast U.S.

Simply put, golden full moon maple (Acer shirasawanum ‘Aureum’) is a stunner (USDA hardiness zones 5-7). It is a slow growing maple, eventually reaching 18-20 feet in height and spread at maturity. It tends to be a long-lived tree if properly cared for. Leaves are circular with 9-13 short pointed lobes. Each lobe does not […]

Winter Hardiness of Crape Myrtles

If you garden in USDA zone 6, certain crape myrtle cultivars are rated as reliably winter hardy perennials. Most dependable are the U.S. National Arboretum cultivars released starting in the 1980’s to date. Each one is named for an Indian tribe. Most of the National Arboretum cultivars are selected for cold hardiness as well as for disease and insect resistance.  Among the […]

Star Zinnias Handle Heat and Dry Weather

    Wanting two seasons of spring-summer color, heat and drought tolerant, and no disease or pest problems? You should be planting Profusion and Zahara zinnias, also called “star zinnias”. They are very resistant to powdery mildew, a disease which plagues many kinds of zinnias. Profusion and Zahara zinnias bloom non-stop for almost 6 months (mid-May thru October) in the […]

The Boys Or Girls of Summer

Gardeners are looking for simple plant combinations and this photo, shot at Kingwood Center in Mansfield, Ohio, shows three easy to grow perennials, “no-brainers” as some might call them. Originally, all three plants emigrated from the prairie where each coped with hot summers without much rainfall. In the hands of modern plant breeders, each perennial has been greatly improved. All are disease and pest resistant. Some […]

Dawn Redwood Is Back From Extinction

  Dawn redwood (Metasequoia glyptostroboides) was thought to be extinct until the mid-twentieth century. In 1948 dawn redwood was re-introduced into North America from Sichuan-Hubei Provinces in China.   Dawn redwood grows in full sun and in well-drained, compost-rich soil. The tree struggles in dry or high pH soils. Dawn redwood will tolerate standing water for a […]

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 […]