A good sized Cos lettuce which develops dense heads of crisp and succulent leaves. The outer leaves are mint green and slightly ruffled, surrounding a crystal white heart. Crops are bitter-free and delicious eaten fresh in salads and sandwiches. Produces sturdy crops that are heat tolerant and adapted to many soils and conditions. Winner of an RHS Award of Garden Merit for reliability and good performance.
A good sized Cos lettuce which develops dense heads of crisp and succulent leaves. The outer leaves are mint green and slightly ruffled, surrounding a crystal white heart. Crops are bitter-free and delicious eaten fresh in salads and sandwiches. Produces sturdy crops that are heat tolerant and adapted to many soils and conditions. Winner of an RHS Award of Garden Merit for reliability and good performance.
in 3 offers
The lowest price for Royal Horticultural Society Seeds - Lettuce (Cos) Crisp Mint - Seeds right now is $4.00 at Mr Fothergill's Seeds, compared across 3 retailers.
The all-time low was $3.00 on 23 Feb 2026 — today's price is 33% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 8 June 2026.
Royal Horticultural Society Seeds - Lettuce (Cos) Crisp Mint - Seeds
A good sized Cos lettuce which develops dense heads of crisp and succulent leaves. The outer leaves are mint green and slightly ruffled, surrounding a crystal white heart. Crops are bitter-free and delicious eaten fresh in salads and sandwiches. Produces sturdy crops that are heat tolerant and adapted to many soils and conditions. Winner of an RHS Award of Garden Merit for reliability and good performance.
A good sized Cos lettuce which develops dense heads of crisp and succulent leaves. The outer leaves are mint green and slightly ruffled, surrounding a crystal white heart. Crops are bitter-free and delicious eaten fresh in salads and sandwiches. Produces sturdy crops that are heat tolerant and adapted to many soils and conditions. Winner of an RHS Award of Garden Merit for reliability and good performance.
Last updated at 08/06/2026 09:59:39
RHS Cos Crisp Mint Lettuce | Produce Seeds | Mr Fothergill's
Delivery between 17–22 June $5
RHS Lettuce Crisp Mint (COS)
Delivery between 10–16 June $12
Royal Horticultural Society Lettuce Cos Crisp Mint
Delivery between 11–19 June $55
| Botanical Name | Lactuca sativa |
| When To Plant | Late Winter to Autumn |
| Harvest | 8-10 weeks |
| When to Sow/Plant | Spring, Summer, Autumn |
| Soil Type | compost, fertile |
RHS Cos Crisp Mint Lettuce | Produce Seeds | Mr Fothergill's
Delivery between 17–22 June $5
RHS Lettuce Crisp Mint (COS)
Delivery between 10–16 June $12
Royal Horticultural Society Lettuce Cos Crisp Mint
Delivery between 11–19 June $55
| Botanical Name | Lactuca sativa |
| When To Plant | Late Winter to Autumn |
| Harvest | 8-10 weeks |
| When to Sow/Plant | Spring, Summer, Autumn |
| Soil Type | compost, fertile |
