- Soil type : Heavy clay
- Flowering month : July
- Flower colour : Purple
- Sowing month outside : March
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Special conditions
Ready made borders
Planting combinations
Evergreen / deciduous
Fragrance
Attractive to wildlife
Quick growing
Eventual size
Sowing month inside or protected
RHS Spring catalogue 2021
Hardy
Leaf colour
Ground cover
Position
Soil moisture
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