Cosmos Bipinnatus 'Sea Shells' Mix Seeds


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A Half-hardy Annual, this tall, bushy cosmos is mostly noted for its distinctive flower form. Seashells Cosmos produce exquisite, tubular-petalled blooms somewhat similar to a sea shell in lovely pastel colours of white, pink, rose and crimson. The finely cut foliage and delicate, colourful flowers make an outstanding background planting that blooms all summer long. Cosmos are easy to grow and literally thrive on neglect, garden height is 3 to 4ft and its long stems are excellent for cutting. 

Cosmos is one of the best nectar plants for attracting bees and butterflies to the garden and the flowers are perfect for pressing. Very easy to grow, making it a perfect choice for children or the less experienced gardener. Excellent in beds and borders as well as the cutting garden. The plants are also perfect for container plantings where their toughness and showiness can keep the flower show going all through the summer. 

Pretty Wild Seeds are registered with the Department for Environment, Food & Rural Affairs (DEFRA) under number 7529, so you can have confidence in both our products and advice. Although our products are listed in weights and acres, we can supply in additional quantities upon enquiry so if you need a larger supply, please don't hesitate to give us a call.

  • 1g for £2.35
  • 3g for £4.39
  • 5g for £5.99
  • Quantities from: £2.35




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    The Cosmos Bipinnatus 'Sea Shells' Mix Seeds is shown in Flower Seeds > Annuals Seed.

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    We happily accept returns within 14 days from date of delivery. All returns must be received in the same condition and packaging we sent them. Postage charges will not be refunded on unwanted products.

    You are solely responsible for ensuring the goods are returned to us. We will not be liable for returns that are lost in the post or lost for any other reason. If a product arrives damaged we will advise the customer how to return the item with all return costs covered by us.  Replacements & refunds will be dispatched / issued on receipt of the returned items only.

    Sow indoors for surest results, February-April, 0.5cm (¼") deep, in trays of compost. Water well and place in a warm position. A temperature of 15-20°C (60-68°F) is ideal. Keep moist. Seedlings usually appear in 14-21 days. Transplant seedlings, 5cm (2") apart, to other trays when large enough to handle (always hold by a leaf, never by the stem). Grow on in cooler, but not cold conditions. Gradually accustom young plants to outside conditions (avoid frosts), before planting out into well-drained soil, May-June, 30cm (1') apart, when frosts are over. Or, sow outdoors for ease, April-May, where they are to flower, 1.5cm (½”) deep, into finely-prepared, well-drained soil, which has already been watered. Thin seedlings to 30cm (1') apart. Water well until plants are established. Flowers: June-October

     1g = approx 150 seeds.