Archive for the ‘winter hardiness’ Category

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 […]

This Korean Maple Deserves To Be Planted More

Ullung-do Island Korean maple (Acer pseudosieboldianum ‘Takeshimense’) is a small deciduous tree which will grow to be 20 -25 feet tall tree, with a spread of 15-18 feet. It tends to branch low to the ground. It originates from the Ullung-do Island in the sea of China. Korean maple is one of the best maples […]

‘Northwind’ Switchgrass Is Environmentally Tough and Beautiful

  Young Clump of ‘Northwind’ Switchgrass Northwind switchgrass (Panicum virgatum ‘Northwind’) is a medium sized 5 to 6 feet tall ornamental grass. This tall native prairie grass grows best in full sunlight for most of the day. Its tight narrow posture seems to fall apart in shade. There are many good switchgrass varieties. Northwind makes […]

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 […]

Strong Vertical Presence of Serbian Spruce

  Serbian spruce (Picea omorika) rises as a tall spire in the urban landscape. A mature tree may reach 50 to 60 feet high and it creates a narrow footprint of 15 to 25 feet wide. Lateral branches uniquely bend downward while the growing tips sweep gracefully upward. Annual growth rate is slow at 12-15 inches. Two-thirds of the short dark green needles lay […]

Ostrich Fern Likes It Moist And Cool

For sheer toughness ostrich fern (Matteuccia struthiopteris) handles most landscape situations (USDA hardiness zones 2-7a). Ostrich fern is commonly seen growing naturally in cool moist river bottom soils, 3-5 feet in height and spreading aggressively. Roots have a clumping rhizomatous nature. The fronds grow upright with a slightly arching form, typically to 2-3 feet in […]

‘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. […]

No Scorch ‘Verdoni’ Dwarf Hinoki Cypress

 For a small urban garden many dwarf evergreen conifers are a good fit. There are so many to choose from and Verdon hinoki cypress (Chamaecyparis obtusa ‘Verdoni’) is one of the finest. Its fan shaped gold-edged green foliage will light up almost any garden locale. It makes a great garden companion with short growing perennials, […]

‘Color Guard’ Yucca Hold Gold Variegation

Architecturally, yucca (Yucca filamentosa), aka Adam’s needle or Spanish bayonet, makes a strong landscape statement. Yucca is often difficult to fit with with other shrubs, except perhaps other xerophytic plants. Yucca is frequently used in an arid-looking or in a courtyard setting in gravel mulch. Yucca prospers in full sun and a well-drained soil. This […]

‘Lady Francis’ Ivy Wakes Up A Shady Patch

On a recently trip to the Ohio State University Horticultural Gardens in Columbus, I discovered ‘Lady Frances’, a relatively tame miniature ivy. The American Ivy Society classifies Hedera helix ‘Lady Frances’ as non-invasive, and it received the first “Ivy of the Year” award in 2001. It grows slowly and works as a ground cover or  topiary […]