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Description
- Native British wildflower
- Gorgeous purple flowers in summer
- Grows well in poor soils
- Self-seeds liberally
A native British wildflower that thrives on neglect, Centaurea scabiosa (great knapweed) grows even in poor, dry soils, producing gorgeous thistle-like purple flowers that bees and other pollinators love to visit. It makes a beautiful addition to a wildlife-friendly border and will self-seed freely.
Sow indoors
Sow in trays of pre-watered seed compost and cover lightly. Keep at 15-20°C and allow 2 weeks for germination.
Grow on
When large enough to handle. transplant into 8cm pots. Slowly acclimatise to outdoor conditions before planting out after frosts.
Plant out
Choose a sunny spot in any well-drained soil. Plant approximately 25cm apart. Height may vary. For earlier flowering, sow in autumn and overwinter in a cold frame before planting out in spring. Self-seeds readily.
Video
Growing Calendar
Delivery
We know how important your garden is to you. We've listened to our customers and introduced a new improved speedy delivery service, meaning Express delivery comes as standard.
*Orders to Northern Ireland have an automatic additional £3.00 delivery surcharge applied at checkout.
Order Type | Delivery Charge | Delivery Charge |
Seed only order | £2.99 | If you purchase any other items you'll be charged the standard delivery rate of £5.99 |
Plants, bulbs & gardening accessories | £4.95 | If we need to split your order into separate deliveries we'll only charge one delivery fee |
Extra large or long plants & heavy items | £9.99 | These are clearly displayed at check-out |
Compost (and any other large or heavy items) | £4.95 | These items are subject to a delivery multiplier where orders containing 3 or 4 items will be subject to an additional £4.95 for every further 2 items added. This is automatically applied at check-out:
If you'd like more than 10 bags of compost please call our Customer Service team who can arrange for a bespoke competitive quote on 01480 774555 (standard network charges apply) |
For more detail on specific delivery queries and compost delivery please click here
Delivery to outside of Great Britain
We regret we are unable to deliver any items outside of some Great Britain delivery addresses. This includes Europe, Channel Islands, Republic of Ireland, USA and Rest of World. We will update our website if this changes.
We now deliver to Northern Ireland, additional delivery surcharges automatically apply at checkout.
For more information about our deliveries please click here.