Rose of Sharon - Diana Althea

Rose of Sharon or Althea is a flowering multi-trunk shrub. It’s hardy and easy to grow. Often seen around older residences, this flowering shrub has been reinvigorated by a variety of new cultivars. Flowers bloom from June to September. It is prudent to remove old branches in the winter to encourage summer flowering.

 

Scientific Name: Hibiscus syriacus 'Diana'
Zones: 5-9
Lighting: full sun to part shade
Moisture: moist, well-drained
pH: 5.5-7.5
Growth Rate: 12-24" per year
Mature Height: 8-12'
Mature Width: 6-10'
Spacing: plant 2-3' apart for hedge


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