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The common Hollyhock is one of the most desirable garden plants nature ever invented. Alcea should be planted in full sun and, if placed in a protected location, might not need to be staked. Flowering begins in June here and continues into August. Rust, a fungus that appears as orange-brown spotting on the leaves, can sometimes be a problem, but seems to have little effect on the vigor of the plant. This can be avoided or diminished by providing ample air circulation around the plants. If necessary, treat with applications of Neem Oil or sulfur starting early in the season.
Plant Height: 24 inches
Flower Height: 32 inches
Spread: 16 inches
Sunlight: Full Sun
Hardiness Zone: 2b
Other Names: Althaea rosea