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Storm Damage - Annuals, Bulbs, Groundcovers, Perennials, and Vines

Back to Common Problems - Annuals, Bulbs, Groundcovers, Perennials, and Vines Storms with strong winds, hail (see photo above) or heavy rains may knock over and flatten flowering plants or herbs during the growing season. To prevent damage during sudden storms, determine which garden plants require...

Pesticide Burn (Phytotoxicity) - Annuals, Bulbs, Groundcovers, Perennials, and Vines

Back to Common Problems - Annuals, Bulbs, Groundcovers, Perennials, and Vines Pesticide burn, or phytotoxicity, is caused by misuse or misapplication of chemicals on plants. Symptoms included leaf spots, blotches, scorch or tip burn. Symptoms are sometimes confused with disease, insect or mite...

Natural Senescence of Older Leaves - Flowers/Vegetables

Natural Senescence of Older Leaves Back to Common Problems - Annuals, Bulbs, Groundcovers, Perennials, and Vines The yellowing of a few lower leaves may be attributed to natural leaf aging. Many plants normally shed lower (older) leaves as the plant grows. Senescence is defined as the normal...

Volutella Dieback of Pachysandra - Groundcover

Back to Common Problems - Annuals, Bulbs, Groundcovers, Perennials, and Vines ***It is no longer recommended to plant Pachysandra terminalis (Japanese spurge), especially near or adjacent to natural areas, because it is an alien invasive plant*** http://www.invasiveplantatlas.org/subject.html?sub=...

Southern Blight - Flowers/Groundcovers

Back to Common Problems - Annuals, Bulbs, Groundcovers, Perennials, and Vines When a plant or part of the plant (leaf, flower, fruit) rapidly collapses and dies this is called blight. Many bacteria, fungi, and viruses can cause blights. Most blights are favored by certain weather conditions, such...

Rhizoctonia Web Blight - Flowers/Groundcovers

Back to Common Problems - Annuals, Bulbs, Groundcovers, Perennials, and Vines The typical symptoms of this fungal disease are a rapid blighting or dieback of the foliage during hot humid conditions. The infected plants may turn dark brown or black and will often quickly collapse. The pathogen can...

Powdery Mildew - Annuals, Bulbs, Groundcover, Perennials, and Vines

Back to Common Problems - Annuals, Bulbs, Groundcovers, Perennials, and Vines Go to Powdery Mildew - Trees and Shrubs Powdery mildew is the common name for the disease and symptoms caused by a closely related group of fungi. These fungi grow on the upper and lower leaf surfaces, young stems, shoot...

Phomopsis and Phoma Dieback of Vinca - Groundcover

Initial wilting symptoms on vinca. Back to Common Problems - Annuals, Bulbs, Groundcovers, Perennials and Vines ***It is no longer recommended to plant Vinca minor (Periwinkle or Vinca), especially near or adjacent to natural areas because it is an alien invasive plant*** http://www.nps.gov/plants/...

Fungal Leaf Spots on English Ivy

Leaf spot on English Ivy. The symptoms of fungal infection on English ivy include yellow-brown or black spots or blotches on the leaves. The spots may have a yellow ring or dark border around them however usually not as vivid as with bacterial infections. Initial leaf spots will usually be circular...

Bacterial Leaf Spot and Bacterial Leaf Blight on English Ivy - Groundcover

Back to Common Problems of Annuals, Bulbs, Groundcovers, Perennials, and Vines ***It is no longer recommended to plant English ivy because it is an alien invasive plant*** http://www.nps.gov/plants/alien/fact/hehe1.htm The symptoms of bacterial infection on English ivy include yellow-brown or black...

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