According to the American Dahlia Society there are 18 classes of dahlias, from the popular small flowered dahlietta types to the large flowered dinner plate type. Dahlias hail from South of the Border, down Mexico Way, and are not reliably winter hardy north of USDA zone 7-b. Dahlias are easy to grow. They want a compost […]
Archive for the ‘Planting tips’ Category
Torenia (Wishbone Flower) Blooms In Part Shade
The list of summer flowering annuals for shady spots in the garden is not long. Garden impatiens (Impatiens x wallerana) is the first choice, seconded by begonias (Begonia x semperflorens-cultorum). Today, wishbone flower (T. fournieri) is now available. Torenia blooms from spring to frost. It is best grown in a moist, organically rich, well-drained soil and […]
Powdery Mildew: The Bane of Beebalm
Beebalm (Monarda spp.) is one of our great native perennials and herbs. Native Americans used beebalm as a tea, brewing it for colds, minor bronchial and digestive complaints, and also as a poultice to soothe insect stings. During the Boston Tea Party, rebellious colonists utilized beebalm as a tea substitute, calling it “Oswego tea”. […]
‘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 […]
Add Hardy Begonia To Your Shade Garden
Hardy begonia (Begonia grandis) is the only species of begonia which is winter hardy in USDA zones 6-9 (zone 5 with protection). This shade-loving perennial grows 18 -24 inches high and wide, and displays a well-branched mounding habit. Foliage is medium to olive green above and reddish green with red veining beneath. Leaf shape is […]
Northern Maidenhair Fern Appear Delicate But Grow Tough
Their leaves (called “fronds”) appear delicate, but maidenhair ferns (Adiantum spp.) are reliable long-lived perennials. Northern maidenhair (A. pedatum) thrives in most gardens within USDA zones 3-8, while the Southern counterpart, (A. capillus-veneris), predominates in warmer USDA 7-10. Unfortunately, planting of maidenhairs are not utilized in the Southern Appalachian gardens (USDA zones 6-8). Fronds average 18-24 inches in […]
Growing Mountain Laurels in Your Landscape
Mountain laurel (Kalmia latifolia) is a U.S. native evergreen broadleaf shrub (USDA hardiness zone 5). Mature sizes range from 5 feet (dwarf cultivars) to 12 feet in height and with equal spread. Over the past 30 years, mountain laurels have so improved, thanks to breeding efforts of Dr. Richard Jaynes*. He has released several dozen […]
Firethorns Make Good Utility Shrubs
Firethorn (Pyracantha spp.) is an old- fashion shrub that is making a comeback. Its white flowers makes a lovely presence in spring, followed by dark green leaves in summer, and bright orange or red fruits (berry clusters) in fall and winter. Firethorn tolerates close clipping and is often utilized as a short 6-8 foot tall privacy screen. White clusters […]
Variegated Tapioca Plant Thrives In The Summer Heat
Add some tropical flair to your garden with variegated tapioca plant (Manihot esculenta ‘Variegata’), aka Cassava. Variegated tapioca is a spectacular foliage plant (zone 8 – 11) which excels as summer’s heat and humidity arrives and lingers. Tapioca plant is not likely to be sold in every garden center and you’ll likely need to order one or more on-line. […]
Pest Alert- Boxwood Blight
Boxwood blight is a disease caused by a fungus (Cylindrocladium pseudonaviculatum) which is a serious threat to most boxwood (Buxus) and related species such as sweetbox (Sarcococca spp.). To date there is no evidence of resistance to boxwood blight in any Buxus species. Plant pathologists in England first identified the disease in the mid-1990’s. It […]

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