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Key Features
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Growth Habit:
- Upright, multi-stemmed shrub or small tree
- Typically grows 8–12 feet tall and 4–8 feet wide
- Can be pruned into a tree form or maintained as a hedge
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Bloom Color:
- Wide range including white, pink, lavender, blue, purple, and bicolor varieties
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Fragrance:
- Generally light to no noticeable fragrance
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Wildlife Attraction & Pest Resistance:
- Attracts bees, butterflies, and hummingbirds
- Moderately deer resistant
- Generally pest and disease resistant, though occasional aphids or Japanese beetles may appear
- Planting Zones: USDA Zones 5–9
- Sun Preferences: Full sun (best flowering), tolerates light shade
- Drought Tolerance: Moderate once established; prefers occasional deep watering
Planting Instructions (From a 3.5" Pot into the Ground)
1. Choose the Location
- Select a sunny location with good air circulation.
- Ideal for hedges, borders, or as a focal point.
2. Prepare the Soil
- Loosen soil 10–12 inches deep.
- Add compost to improve fertility and drainage.
3. Dig the Hole
- Dig a hole twice as wide as the 3.5" pot and equal depth.
4. Remove from Pot
- Gently remove the plant and loosen any circling roots.
5. Plant
- Place the plant so the root ball is level with the soil surface.
- Backfill and firm soil gently.
6. Water
- Water thoroughly after planting.
- Keep soil consistently moist during establishment.
7. Spacing
- Space plants 6–10 feet apart depending on desired density.
Overwintering Rose of Sharon
In-Ground (Zones 5–9)
- Fully hardy and requires minimal winter care
- Drops leaves in fall (deciduous)
- Apply a 2–3 inch mulch layer around the base to protect roots and retain moisture
Maintenance Tips
- Prune in late winter or early spring to shape and encourage new growth
- Blooms on new wood, so pruning does not reduce flowering
Container Plants
- Move containers to a sheltered location in colder climates
- Water occasionally during dormancy to prevent roots from drying out
Rose of Sharon (Althea) is a versatile and reliable flowering shrub that delivers vibrant blooms, pollinator appeal, and structural interest. Its long flowering season and adaptability make it a standout addition to both formal and informal garden settings.