Silphium — Flowers
Silphium
Sun or part shade, moderate watering — hardy anywhere in the UK.
- Plant out
- Mar
- In flower
- Jul
- Sun
- Part sun
- Water
- Medium
- Difficulty
- Easy
- Hardiness
- H7
- Season
- summer
- Height
- 150–250 cm
- Spacing
- 100 cm
- Pets
- Safe around pets
- Bee friendly
- Bee friendly
Growing notes
Grows to 1.5-2.5 metres. Space about 50-100cm apart. In flower Jul.