Impatiens

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Publications

Impatiens Downy Mildew

N. A. Peres and L. A. Warner

Downy mildew on impatiens is of great concern throughout Florida. Winters in south Florida provide high humidity paired with cool nights, creating ideal conditions for disease development. Downy mildews are caused by several different species of pathogens that tend to be plant-host specific. Plasmopara obducens is the pathogen that affects impatiens. Some literature indicates that nighttime temperatures of about 50°F to 72°F favor downy mildew, but the disease has been reported on impatiens year-round in south Florida.

Impatiens x New Guinea Hybrids New Guinea Impatiens

Edward F. Gilman, Teresa Howe, Ryan W. Klein, and Gail Hansen

This document provides an overview of the New Guinea impatiens, a versatile and colorful annual plant. It highlights the plant’s distinguishing features, including its brilliantly marked foliage, large single flowers in various colors, and its ability to tolerate greater amounts of sun once established. The document details the plant’s growth habits, ideal planting conditions, and maintenance requirements, emphasizing its suitability for edging, mass planting, and container gardening. Additionally, it mentions the plant’s pest resistance and recent developments in seed propagation, making it a popular choice for gardeners. Original publication date October 1999.