Reviewing
Ammi Majus Seeds26 Feb 2026
Quick Germination
Happy with how quick and easy germination was.
Robbie P.Verified buyer
Delphinium 'King Arthur' Seeds
Delphinium Pacific Giants 'King Arthur'
‘King Arthur’ Delphinium with magnificent blue spires.
A towering gem from the esteemed Pacific Giants collection, ‘King Arthur boasts majestic floral spires accentuated by contrasting white centres. These royal blooms elegantly define the back of garden borders, achieving peak brilliance, particularly in their second season. Requiring some patience, they mature beautifully, unfolding their true majestic form with time.
Approx 30 seeds
- Pollinator-Friendly
- Sun Loving
- Hardy Perennial
- Big Gardens
Delphinium 'King Arthur' Seeds – Quick Growing Guide
Delphinium 'King Arthur' seeds produce tall, striking perennial flowers ideal for UK gardens. Sow from March to September, with germination in 7–14 days. These delphiniums thrive in full sun and well-drained soil, requiring regular watering. Perfect for cut flower displays and adding height to borders.
How to Sow, Grow and Harvest Delphinium 'King Arthur' Seeds
- Sow:March–September, direct or in pots
- Germination:7–14 days
- Grow:Full sun, well-drained soil, support tall stems
- Water:Keep soil moist but not waterlogged
- Harvest:Cut flowers when buds show colour for longest vase life
- Best for:Borders, cut flower beds, cottage gardens
Delphinium 'King Arthur' is a striking perennial known for its tall floral spires and vivid blue blooms with contrasting white centres. Ideal for adding height and colour to garden borders or cut flower displays. These seeds require patience but reward you with majestic flowers, especially in their second season.
Delivered within 2-5 working days via our standard delivery
Standard Delivery
For standard delivery, we’ll work with our delivery partners to ensure you receive your delivery within 2-5 working days.
Express Delivery
You can also send this item the next day, just place the order before 11 am and we'll get it sent out the same day to arrive the following day.
Gifting
Want to send this as a gift? We can include a handwritten note, just add what you'd like to write at checkout.
If you’re worried about your delivery or have any other questions please get in touch via our contact page and one of our team will come back to you as soon as we can.
For more information on our shipping services, have a look at our FAQs.
Grow in Your Garden
Delphinium 'King Arthur' – Tall Cut Flower Seeds
Reviews
Showing all product reviews while this product has none yet.
4.7
Based on 3 reviews
100% would recommend this product
5★
2
4★
1
3★
0
2★
0
1★
0
3 reviews
Reviewing
Roman Chamomile Seeds21 Feb 2026
Bought Chamomile
I haven't planted the seeds yet but if they're as good as the ones I've brought in the past I'll be more than happy.
Fred J.Verified buyer
Reviewing
Cornflower Seeds21 Feb 2026
LOVED
Got sent them as a gift and loved the instructions on sowing - very helpful
Posey C.Verified buyer