Piedmont Azalea (R. canescens) at Callaway Gardens Early flowering Piedmont azalea (Rhododendron canescens) is one of the most common native deciduous azaleas in the southeastern U.S. It is frequently confused for pinxterbloom azalea (R. periclymenoides) which blooms 3-4 weeks later. Piedmont azalea is hardy in USDA hardiness zones 6 to 9. Piedmont azalea reaches a mature height between [...]
Archive for the ‘Insect (Pest) Problems’ Category
Piedmont Azalea
Posted by Hugh on March 30th, 2012
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Protect Fruit Trees and Bee Population
Posted by Hugh on March 19th, 2012
Cedar rust infection spot Warm weather in early spring means scab, cedar apple rust and powdery mildew diseases are upon the new leaves as they start to emerge. Preventative spraying for leaf diseases will result in management of additional fungi diseases through the growing season. Fungicides are protectants and not cure-alls. A light rain shower (as [...]
Don’t Let’em Sucker
Posted by Hugh on March 18th, 2012
Some grafted and budded shrubs and trees develop a bad habit to sending up shoots (suckering) from its rootsystem. This creates an untidy appearance around the base of shrubs and trees. Far worse, the root suckers may compete for domination over the cultivar graft. They may rob photosynthate, water and nutrients from the grafted plant. Eventually, the grafted portion may die. Gardeners select grafted plants for a number [...]
Leyland Cypress Too Big For Many Sites
Posted by Hugh on January 30th, 2012
Leyland cypress (x Cupressocyparis leylandii) grows into a 50 foot tall evergreen behemoth. What happens when the plants (in photo) get too close to the small deck(s)? Access to the deck from the stairs will become impossible as the evergreens swallow up the entire back yard. Looking out from the deck and windows from the home won’t be likely [...]
Volcano Mulching Harmful
Posted by Hugh on January 1st, 2012
Piling up mulch around trees or shrubs, called “volcano mulching”, is a bad practice and is killing them. Perhaps you’ve seen a neighbor or a professional landscaper doing it, and assumed that it must be alright. It’s not! The deep mulch pile smothers the natural buttress flair of the trunk which breathes and absorbs air for [...]
Disease Free Apple Varieties
Posted by Hugh on December 6th, 2011
Over the past 30 years, the goal has been to develop good eating and storing apples which are not susceptible to four major diseases. The first 3 cultivars released were ‘Prima’, ‘Priscilla’, and ‘Sir Prize’, but they lacked great flavor and storage quality. Apples are susceptible to four serious diseases: apple scab, cedar-apple rust, fireblight, and powdery mildew. Scab, rust and mildew [...]
Making A Case for Mugo Pine
Posted by Hugh on November 4th, 2011
Mugo pine (Pinus mugo) is a slow growing needle evergreen shrub of variable heights ranging from 5 feet to 20 feet and more. Mature height depends on the cultivar planted and environmental conditions on site. Mugo pine is native over many hundreds of miles of alpine climes across Europe. It is winter hardy in USDA zones [...]
