It’s late summer in the Southern Appalachian region (USDA zones 6 and 7). Outdoor temperatures continue to hit 90°F almost daily, and weekly precipitation is low. Over the past 3-4 weeks leaves have been dropping prematurely from landscape trees. Tulip poplar (Liriodendron tulipifera), river birch (Betula nigra), willow (Salix spp.), sycamore (Platanus x acerifolia), […]
Archive for the ‘Regional’ Category
Summer Leaf Drop From Trees
Posted by Hugh on August 20th, 2011
Posted in Birch (Betula spp.), Elms (Ulmus), Garden Problems, Hackberry (Celtis), Large Shade trees, Premature leaf drop, Redbud, Southern Appalachian Region, Summer heat tolerant, Sycamore (Platanus), Trees & Shrubs, watering tips, Willows (Salix) 
Comments Off on Summer Leaf Drop From TreesThe Challenge and Reward of Harlequin Glorybower
Posted by Hugh on August 17th, 2011
Harlequin Glorybower (Clerodendron trichotomum) is a rambling 15 foot tall shrub, and can be easily shaped into a multi-stemmed 10-12 foot small tree. Glorybower shines in the late summer and early fall landscape. Its sweetly scented, very showy flowers attract the attention of gardeners as well as hummingbirds and butterflies. Glorybower reaches its northern- most hardiness limit here […]
Old-Timey ‘Royal Standard’ Hosta Still Rules
Posted by Hugh on August 14th, 2011
Kingwood Center is a wonderful public garden in Mansfield, Ohio with several top notch beds of hostas. One glorious bed of ‘Royal Standard’ hosta blooms their heads off from mid-August into September. With over 35,000 registered hostas available, why look back at this vintage variety. Royal Standard was patented and introduced in 1965 by Wayside Gardens […]
Posted in compost, Hosta, Perennials, Southern Appalachian Region, Summer flowering, Summer heat tolerant, Uncategorized, winter hardiness Comments Off on Old-Timey ‘Royal Standard’ Hosta Still Rules‘Kim’s Knee High’ Coneflower For Small Gardens
Posted by Hugh on August 11th, 2011
We are in the midst of an Echinacea revolution. Purple coneflower (Echinacea purpurea) is a popular 5-6 foot tall native perennial commonly planted in meadow and butterfly gardens. Kim Hawkes, former owner of Niche Gardens Nursery in Chapel Hill, N.C. introduced compact growing ‘Kim’s Knee High’ a decade ago. It is still one of the finest cultivars. ‘Kim’s Knee High’ […]
Posted in Attracting birds, Bee Favorite, Butterflies, Coneflower (Echinacea purpurea), deadheading, Fertilizing plants, Hummingbird, Perennials, plant nutrition, Pruning, Southern Appalachian Region, Summer flowering, Summer heat tolerant, Uncategorized, Winter Garden Interest Comments Off on ‘Kim’s Knee High’ Coneflower For Small GardensExplode Your Plant Roots
Posted by Hugh on August 9th, 2011
One of my gardening frustrations is watching a new plant linger and not grow. I dig a proper hole, deep and wide enough. I pour gallons of water on the plant to keep it alive during a dry hot summer. Four months later, the plant is the same size as last spring or it […]
Posted in Garden Problems, Purchasing Plants, Southern Appalachian Region, Transplant problem, Uncategorized Comments Off on Explode Your Plant Roots‘Morning Calm’ Trumpet Vine
Posted by Hugh on August 5th, 2011
Our native trumpet vine, aka trumpet creeper (Campis radicans), may instill fear in gardeners. A wild vine may climb a utility pole, 30- 40 feet in one year. The late horticulturist Dr. J. C. Raulston at NC State University in Raleigh recommended its tamer Chinese cousin (C. grandiflora) and the cultivar ‘Morning Calm’. Trumpetvine climbs and […]
Posted in Campsis grandifolia 'Morning Calm', plant nutrition, Pruning, Southern Appalachian Region, Summer flowering, Summer heat tolerant, Vine, winter hardiness Comments Off on ‘Morning Calm’ Trumpet VineHibiscus Sawfly Devastates Plant Foliage
Posted by Hugh on August 3rd, 2011
The hibiscus (mallow) sawfly is a devastating pest of hibiscus (Hibiscus moscheutos) and hollyhock (Alcea rosea). The adult sawflies are small, barely a quarter inch long. They are mostly black, except for a yellowish brown spot on their thorax, and their smoky wings. The pale green larvae mature to 1/2 inch in length. The larvae […]
Posted in Hibiscus (mallow) sawfly, Hibiscus moscheutos, Hollyhock (Alcea), Perennials, Southern Appalachian Region Comments Off on Hibiscus Sawfly Devastates Plant FoliageA Canna Lily Revival
Posted by Hugh on July 30th, 2011
Depending on where you garden, Canna lily (Canna spp.) is a tropical-looking, herbaceous annual or perennial. Its colorful foliage and long blooming time leaves a huge visual impact. Canna is not reliably winter hardy in the Southern Appalachian region (USDA hardiness zones 6 and 7). […]
Posted in Canna lily, Canna lily, Fertilizing plants, Southern Appalachian Region, Summer flowering, Uncategorized, Virus diseases, water garden maintenance, watering tips, winter hardiness, winter injury Comments Off on A Canna Lily RevivalNative Plumleaf Azalea Blooms In The Heat Of Summer
Posted by Hugh on July 28th, 2011
Plumleaf Azalea (Rhododendron prunifolium) From my garden here is a look today (July 28th) at plumleaf azalea (Rhododendron prunifolium). Plumleaf is an Alabama native, and its orangey red flowers has been growing in my east Tennessee garden for the past 15+ years. It is hardy to zone 5-b (- 15°F) which includes most of the mid-Atlantic and southern New England states. Plumleaf handles Southern […]
Posted in acidic soil, Azalea (deciduous), compost, Deciduous Azaleas, Disease resistant, Drought tolerant, Hummingbird, Native Plant, Plumleaf azalea, Pruning, Southern Appalachian Region, Summer flowering, Summer heat tolerant, Trees & Shrubs Comments Off on Native Plumleaf Azalea Blooms In The Heat Of SummerMove Over AJ, Here Comes T-Rex
Posted by Hugh on July 26th, 2011
For nearly half a century, ‘Autumn Joy’ has been the leading “stonecrop” or “live forever” sedum cultivar planted. More than once I’ve heard this saying: “if Autumn Joy won’t grow in your garden, you should try another hobby. ‘T-Rex’ is a terrific new hybrid and ‘Autumn Joy’ is one of its parents. ‘T Rex’ has […]
