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2024 S.E Marshall & Co Limited
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Coreopsis grandiflora
Masses of vibrant yellow double flowers bloom freely over a long season in summer. Coreopsis ‘Double The Sun’ brings low-maintenance colour to the front of your borders, beds, containers and paths.
Buy 5 or more, Save 30%*
20 Seeds
30211026
In stock
£4.99
Fast Delivery – Next Day Despatch Seed Only Delivery From £2.99* | Learn More
Fast Delivery – Next Day Despatch Seed Only Delivery From £2.99*
Seed Only orders £2.99 delivery when buying 3 or more. Less than 3 seed packet only orders will require £6.99 delivery charge. Buy 3 or more Seed Packets and receive discounted delivery at £2.99.
Less than 3 seed packet only orders will require £6.99 delivery charge. Buy 3 or more Seed Packets and receive discounted delivery at £2.99.
When showing as 'In Stock' on the website product page, products are dispatched next day by our expert team of placing your order, (Sunday to Friday).
To ensure your seeds arrive in the freshest condition and undamaged, they are carefully packed in specially designed, fully recyclable packaging.
For larger seed orders we use Yodel express delivery to ensure you receive your package within 3 days of placing your order with the addition of it being fully tracked for your peace of mind.
Long Flowering Season
Hardy
Low Maintenance
Pollinator Friendly
Eventual Height:
Position:
Suitable for:
Plant Type:
Soil Type:
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
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Dec
Sow Indoors
Flowering
Coreopsis grandiflora 'Double the Sun' flowers throughout summer, showing off big, golden-yellow semi-double flowers on a compact mound of foliage. This low-maintenance perennial will bring colour to a container or the front of a border and looks super lining a path. The bright flowers are very popular with butterflies and bees, and make beautiful cut flowers.
Sow indoors
Sow in trays of pre-watered seed compost and cover lightly with a little soil or vermiculite. Keep at 20-25°C and allow 3-4 weeks for germination. Do not exclude light.
Grow on
When large enough to handle transplant into trays of potting compost 5cm apart, or individually into 8cm pots.
Plant out
Gradually accustom plants to outside conditions for 2-3 weeks before planting out when the danger of frost has passed. Allow approximately 35cm between plants. Coreopsis thrives best in full sun. In the garden, plant in any well-drained soil. Use a good quality potting compost if planting in containers. Deadhead regularly to prolong flowering.
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