Althaea Double Purple

Rose of Sharon
Category: .
Plant Type




Overall Mature Size


Mature Height & Spread

10′ x 12′


Full Sun, partial Shade


Medium, Low Water

Flower Color

Purple, Pink, Red, White

Bloom Time


Special Features

Attracts Birds, Butterflies, Low Water Use

Container Sizes


Natural Growth Habit


Minimum USDA Hardiness Zone


Double Purple Althea also known as  Rose-of-Sharon is a deciduous shrub valued for large flowers produced  in mid-to late summer when few other shrubs bloom. The plant grows in sun or partial shade and in any soil. The growth rate ranges from slow to moderate and transplanting is easy.   Height reaches 10ft. with 12ft. spread.  The single or double flowers are in shades of red pink white and purple depending on the cultivar. Peak bloom takes place in August. Prune in late winter or early spring. Frequent severe pruning gives fewer but larger flowers; no or little pruning gives many small flowers. Hardy in zones 5-8.

This plant is attractive to bees butterflies and/or birds. Is drought-tolerant. Suitable for xeriscaping. Water regularly but do not overwater. Self-sows freely; deadhead if you do not want volunteer seedlings next season.

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