Thompson & Morgan Cornflower Seed Packet - Dealbata
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Product Information
Full details
The Thompson & Morgan Centaurea dealbata is an ideal choice for gardeners looking for a low-maintenance, perennial cornflower that produces delicate lavender-pink blooms. Perfect for cottage and wildlife gardens, this plant provides structure and excellent cut flowers in its first year; however, gardeners should be prepared for a longer germination period of one to three months.
All features
| Model Part Number | 25824 |
|---|---|
| Brand | Thompson & Morgan |
Extended Product Information
FAQs
When is the best time to sow these seeds?
Sow between January and March or September and November.
Do these flowers return every year?
Yes, Centaurea dealbata is a perennial plant.
How long does it take for the seeds to germinate?
Germination typically takes between 1 and 3 months.
Can I grow these in pots?
Yes, they can be grown in containers, provided the container has good drainage and the plant is placed in a sunny spot.
Do I need to cover the seeds with soil?
No, sow on the surface and cover lightly with fine vermiculite, ensuring they are exposed to light.
How large will the plant get?
When fully established, the plant can reach a height of 90cm and a spread of 60cm.
Troubleshooting
Seeds failing to germinate
Ensure they are not covered too deeply with compost and that the container is receiving enough light. Maintain constant moisture and a steady temperature of 15-20C.
Leggy or weak growth
The plants likely require more direct sunlight; move them to a brighter, full-sun position once the seedlings are robust enough.
Pros and Cons
Pros
- Perennial plant that flowers in its first year
- Excellent for cutting gardens and bouquets
- Attracts pollinators to the garden
- Easy to manage due to clump-forming growth
Cons
- Germination can take up to three months
- Requires specific temperature control during early stages
- Sensitive to soil drainage issues
Setup, Compatibility & Care
For the best results, sow seeds indoors between January and March or September and November. Use a free-draining, high-quality seed compost and surface-sow the seeds, covering them lightly with fine vermiculite. It is essential to maintain a temperature of 15-20C (59-68F) using a propagator or a sealed plastic bag. Because light is required for germination, ensure the containers are placed in a bright area without direct, scorching sunlight. Once established, ensure they are placed in a sunny, well-draining location to prevent root rot.