Thompson & Morgan Cosmos Lemonade Seeds

£2.54
In stock
SKU
6300002030

In stock

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  • Striking colour with white central collar 
  • Looks great indoors and outdoors
  • Continuous flowering all season long
  • Half-hardy annual
  • Perfect for cut flower arrangements

What Are Thompson & Morgan Cosmos Lemonade Seeds?

Thompson & Morgan Cosmos Lemonade are a fabulous pale yellow cosmos with striking central white eye. The Thompson & Morgan plant breeding team took a very bright yellow, but late-flowering Japanese cosmos variety and crossed it with earlier-flowering cosmos with better, shorter growing habits. The resulting plant was a compact plant that exhibits delicate, subtle yellow blossoms, produced en masse throughout the summer on short, branching cosmos plants.

Where Do Thompson & Morgan Cosmos Lemonade Like To Grow?

Cosmos Lemonade is fantastic in patio pots, or as a robust bed & border filler. Its colouring and habit means that it combines well with most other plants in bedding or container displays. Cosmos 'Lemonade' also makes a great cut flower and looks stunning in a vase, either on its own or mixed in with other flowers.


Despite their delicate looks, these plants are pretty tough and will stay standing in rain or a drought.


The plants generally grow with a height of up to 60 cm (24") and spread up to 40 cm (16").


Garden tip: When growing Cosmos plants, water regularly until they are fully established. Regularly deadhead faded Cosmos flowers to encourage more blooms to be produced throughout the summer.

How Do I Sow Thompson & Morgan Cosmos Lemonade Seeds?

Garden tip: Thompson & Morgan seed packets show full details of sowing and transplanting instructions.

Direct Sowing Cosmos Lemonade Seeds

Garden tip:If you want to direct sow Cosmos seeds outdoors, do so from March to May.


  • Sow Cosmos seeds at a depth of 3 mm (1/8") in a good quality seed compost, and cover the seeds with a very fine sprinkling of vermiculite.
  • Place the seed tray in a heated propagator at a temperature of 18-25C (64-77F).
  • Keep the soil damp but not wet and don't exclude light as this aids germination, which usually takes 7-15 days.

When Should I Transplant & Harden Off Thompson & Morgan Cosmos Lemonade Seedlings Grown Inside?

When seedlings are large enough to handle, transplant into 7cm (3") pots and grow them on in cooler conditions until large enough to plant outdoors. When Cosmos plants are well grown and all risk of frost has passed, acclimatise them to outdoor conditions over 7 to 10 days.


Transplant outdoors in full sun in any moist, well drained soil at a distance of 45cm (18") apart. Pinch out the growing tip of each stem when transplanting to encourage stems to branch and produce more Cosmos flowers.

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