Purple Althea (Tree Form)
Purple Althea, also known as Rose of Sharon, features eye-catching violet-purple blossoms that appear continuously from midsummer through fall. Grown in tree form, it offers a tidy, upright shape that’s ideal for patios, borders, or entryways.
This deciduous flowering tree is low-maintenance and drought-tolerant once established. Its blooms attract pollinators like butterflies and hummingbirds, adding life and movement to your garden space.
- 💜 Abundant violet-purple blooms
- 🦋 Loved by butterflies and hummingbirds
- ☀️ Thrives in full sun and well-drained soil
- 🌳 Compact tree form perfect for tight spaces
- 🌸 Blooms midsummer through fall
Tip: Prune in early spring to maintain a neat, rounded canopy and encourage strong flowering.
Growing Zones: 5–9 outdoors

| Mature Height: | 8–10 feet |
| Mature Width: | 4–6 feet |
| Sunlight: | Full Sun |
| Botanical Name: | Hibiscus syriacus ‘Purple’ |
| Growth Rate: | Moderate |
| Bloom Time: | Summer to Fall |
| Type: | Flowering Tree |
| Pollination: | Self-pollinating |
| Flower Color: | Purple |
| Foliage: | Green |
FAQ’s
How tall does the Purple Althea grow?
It typically grows 8–10 feet tall and 4–6 feet wide in tree form.
Does it attract wildlife?
Yes, it attracts butterflies, bees, and hummingbirds.
When does it bloom?
It blooms from mid-summer through fall.
Can I grow it in a pot?
Yes, it grows well in large containers with proper drainage.
Is it deer-resistant?
Yes, it’s generally deer-resistant once mature.










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