Archive for the ‘Insect (Pest) Problems’ Category

A Marigold Revival

Over the past 2-3 years marigolds are regaining their popularity. Marigolds are easy to grow and come in vibrant shades of yellows and oranges. Tall African type marigolds grow 24-42 inches tall and belong in garden beds. Intermediate (15-24 inch height)  and dwarf French types (10-12 inch height) are suited for both bedding and container plantings. Plant marigolds in […]

Skip (Schipka) Laurel Creates Dense Evergreen Privacy Screen

Schipka laurel (Prunus laurocerasus ‘Schipkaensis’) is a dense growing evergreen shrub with lustrous evergreen foliage and clusters of small white flowers in the spring. It is rated as one of the cold hardiest of cherry laurels (USDA hardiness zone 6-8). In the garden center it is often labeled ‘skip laurel”. Skip laurel grows 10 to […]

Will The Best Cherry Laurel Please Come Forward?

Not all cherry laurels (Prunus laurocerasus) are created equal. “Skip” laurel  (var. Schipkaensis) and  Zabel (var. ‘Zabeliana’) are large size shrubs at 9 to 10 feet in height and 6 to 8 feet in width. Both cultivars are rated the cold hardiest of the tall growing types . ‘Otto Luyken’ is the hardiness small leaf […]

Pest Update – More Pesticide Options for Hemlock Adelgid Control

Twenty years ago predictions of the demise of our native Canadian (Tsuga canadensis) and Carolina hemlocks (T. carolina) from home and commercial landscapes turned out to be incorrect. The key reason was the effectiveness of the insecticide Imidacloprid®. This product is licensed by Bayer AG, and is found in a number of lawn and garden […]

Emerald Ash Borer And Others Are Spreading – Don’t Transport Firewood

  Moving firewood across county or state lines may also distribute serious insect pests hundreds of miles. For whatever reasons that the tree(s) were cut down in your yard, insects (including termites) may be hiding inside the logs. They may remain alive for a long time. Over the past decade three serious exotic insect pests have been identified […]

Pest Update – More Pesticide Options Available Against Hemlock Adelgid

You may be able to prevent or save tree and shrub hemlock(s) from woolly adelgid. This serious pest has two generations per year. The first generation hatches in March and April from overwintering adults (as many as 300 eggs per adult) in white cottony masses on the small twigs. The crawlers (nymphs) hatch and feed in […]

Japanese Beetle Traps – Useful Monitoring Tool

A decade ago garden centers sold thousands of Japanese beetle traps until somebody questioned why anyone would want to lure this summer pest into their garden. Yes, the traps do work and may catch hundreds per week. You also attract hundreds more to feed on your plants’ flowers and leaves and, later in the year, the larvae will feed in […]

Piedmont Azalea

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 […]

Protect Fruit Trees and Bee Population

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

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 […]