Color Solutions Newsletter

Impatiens downy mildew found in U.S. landscapes 10/17/2011

2010 Landscape Survey Results from Ball Landscape 10/25/2010

2010 Landscape Survey Results from Ball Landscape 10/22/2010

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Follow These Steps This Season For
Continued Success With Garden Impatiens

Impatiens downy mildew was observed in landscapes across several regions of North America late this season. In an effort to slow the spread of this disease, Ball Horticultural Company recommends landscapers take the following steps this fall for continued success in growing Impatiens walleriana next season:

Inspect impatiens for evidence of downy mildew.
Note site and location of infected beds.
Promptly remove entire plants and leaf debris completely from beds and containers to reduce overwintering spores in the soil.
Dispose of plant material offsite rather than incorporating it back into the bed. Composting is not recommended.
If an infection was noted this year, replanting a bed with Impatiens walleriana next season is not recommended; use alternative plants for these beds.

Aerial spores of this fungus-like pathogen are easily dispersed by wind and water. Overwintering spores, formed inside infected Impatiens walleriana plants this season, can survive in plant debris in the soil and cause infection next season. Cool temperatures and extended periods of leaf wetness favor the development of this disease.

For further details on impatiens downy mildew click here >>

Visit www.BallLandscape.com to help identify symptoms of impatiens downy mildew, find alternative crop recommendations from Ball, and to read answers to landscapers' Frequently Asked Questions.

Ball Horticultural Company

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