Reviewing
Cosmos 'Sensation' Seeds26 Aug 2026
Can't go wrong with Cosmos
Lovely packet of seeds, bought one for me and one as gift :)
Gareth
Delphinium 'Guinevere' Seeds
Delphinium Pacific Giants 'Guinevere'
‘Guinevere’ Delphinium with stunning floral spires.
A distinguished representative of the acclaimed Pacific Giants collection, ‘Guinevere’ rises with splendid floral spires. Its blooms of rosy lilac, highlighted by contrasting white centres, establish an eye-catching contrast. Perfectly suited for the rear of garden borders, ‘Guinevere’ exhibits brilliant blooming, particularly shining in its second season. Though early blossoms may appear from initial sowing, it’s with time that it truly flourishes and reveals its authentic, exquisite form.
Approx 30 seeds
- Pollinator-Friendly
- Sun Loving
- Hardy Perennial
- Big Gardens
Delphinium 'Guinevere' Seeds – Quick Growing Guide
Delphinium 'Guinevere' seeds can be sown indoors early in the year from March to May or later in August to October, or sown outdoors after the risk of frost has passed. This perennial thrives best in full sun and prefers well-drained soil to support its elegant growth.
How to Sow, Grow and Harvest Delphinium 'Guinevere' Seeds
- Sow:Mar–Jun, Aug–Oct
- Germination:7–14 days
- Grow:Full sun, well-drained soil, support tall stems
- Water:Moderate, keep soil moist but not waterlogged
- Harvest:Cut flowers when buds show colour for indoor display
- Best for:Borders, bee gardens, pollinator-friendly flower beds
Part of the renowned Pacific Giants collection, ‘Guinevere’ is a perennial that thrives in UK gardens. It features impressive floral spires that bloom best in its second year, making it ideal for the back of borders. Its bee-friendly flowers attract pollinators, enhancing your garden's ecosystem.
Delivered within 2–3 working days. On its own, this packet ships letterbox delivery at £2.25. Fits through a standard letterbox, so no one needs to be home.
Delivery is priced on the size of your whole order, so adding more may move it into the next band:
- Letterbox delivery — small orders
- £2.25
- Standard delivery — most orders
- £4.50
- Standard delivery (multiple parcels) — large orders
- £7.50
- Free delivery (orders £60 and over)
- Free
Gifting. We can include a handwritten note — add your message at checkout.
More info in our FAQs, or get in touch if something hasn’t arrived.
Grow in Your Garden
Delphinium 'Guinevere' – Elegant Pacific Giant Larkspur
Calendar
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
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Oct
Nov
Dec
SowFlowers / Harvest
How to Grow
Delphinium 'Guinevere' seeds can be sown indoors early in the year from March to May or later in August to October, or sown outdoors after the risk of frost has passed. This perennial thrives best in full sun and prefers well-drained soil to support its elegant growth.
Sowing
To encourage germination, sow the seeds after placing them in the refrigerator for about a week, providing the cold stratification needed. Sow the seeds indoors during the recommended months and keep the soil moist but not waterlogged.
Growing
Once seedlings have established, thin or pot them on to allow sufficient space, especially if growing in containers up to 45 cm in size. Supporting the tall Pacific Giant delphinium variety is advisable as it grows during June to September to maintain its upright habit.
Plant care
Water Delphinium 'Guinevere' regularly during the growing months, ensuring the soil remains moist without becoming soggy. Deadhead spent flowers to encourage prolonged blooming and reduce disease risk. Providing some extra care during establishment will help this perennial thrive in garden beds or containers alike.
About Delphinium 'Guinevere'
Tall, striking flower spikes with lilac petals and white centres that attract bees and other pollinators.
- Pollinator-Friendly
- Sun Loving
- Hardy Perennial
- Big Gardens
History of Delphinium 'Guinevere'
Delphiniums symbolise cheerfulness and goodwill, often representing joy and encouragement. They are a timeless choice for gardens that celebrate nature and remembrance.
| Other Names | Larkspur, Lark's Heel, Lark's Claw and Knight's Spur |
|---|---|
| Pet/Baby Safe | Toxic |
FAQs
Yes, Delphiniums like ‘Guinevere’ are perennials that return each year, with best blooms typically from the second season onwards. This is a perennial, so one sowing keeps going year after year rather than needing to be repeated each spring. Harvest: Cut flowers when buds show colour for indoor display. Flowering runs June to September.
Yes — this is a straightforward packet to give, and what makes it work as a gift is mostly timing. Sowing runs March to June, and August to October, so a packet given inside that window can go straight in, and one given outside it keeps perfectly well until the season comes round.
There are approximately 30 seeds in the packet. On effort it needs some love, which matters if you are giving it to someone new to growing. It suits borders, bee gardens and pollinator-friendly flower beds, so it works for a small space as well as a garden.
Reviews
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