Thompson & Morgan Cornflower Blue Diadem 1 Packet (180 Seeds), Blue

by Thompson & Morgan

Thompson & Morgan Cornflower Blue Diadem 1 Packet (180 Seeds), Blue

Product Details

Colour
Blue
Condition
new
Model
23810
GTIN
05057554067862
Category
Flowers
£2.99

Available at Robert Dyas

Thompson & Morgan Cornflower Blue Diadem 1 Packet (180 Seeds), Blue by Thompson & Morgan is available for £2.99 at Robert Dyas. Prices last checked on 25 February 2026.

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Description

The tall, upright stems of this hardy annual hold its vibrant blue, ruffled blooms in pride of place in the garden. Cornflower 'Blue Diadem’ is perfect for adding to flowering borders or for bringing a natural, meadow-esque feel to the garden. As an added bonus, its nectar rich flowers attract a variety of pollinators to the area, making them perfect for those that desire a wildlife garden. Alternatively, save a few stems to cut and create a beautiful indoor vase display. Sow cornflower seeds outdoors where they are to grow from March to April. Choose a position in full sun on well drained soil which has been raked to a fine tilth. Sow seeds thinly, at a depth of 3mm (1/8") in drills spaced 30cm (12") apart. Water the ground regularly, especially during dry periods. Germination usually takes 14-21days. When cornflower seedlings are large enough to handle, thin them out to 15cm (6") apart. Alternatively, grow cornflowers indoors from August to September for early summer flowering next year. Sow cornflowers on the surface of a good quality seed compost at a temperature of 18-23C (65-73F) and cover with a very fine sprinkling of compost or vermiculite. Do not exclude light as this helps germination. When seedlings are large enough to handle, transplant and grow them on in cooler conditions until large enough to move outdoors. Overwinter cornflowers plants in cool, light, frost-free conditions before planting out the following spring, or growing on as greenhouse pot plants. Images shown are for guidance only of the expected results from plants upon maturity. Different growing conditions might vary results. Image may be included for illustration of supply but can vary due to seasonality changes (e.g. deciduous plants lose leaves in colder months). Features: The tall, upright stems of this hardy annual hold its vibrant blue Perfect for adding to flowering borders or for bringing a natural, meadow-esque feel to the garden As an added bonus, its nectar rich flowers attract a variety of pollinators to the area, making them perfect for those that desire a wildlife garden Supplied as 1x Cornflower Blue Diadem Seed Packet Specifications: Model Number: 23810

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Thompson & Morgan Cornflower Blue Diadem 1 Packet (180 Seeds), Blue by Thompson & Morgan is available for £2.99 at Robert Dyas. Price checked and updated daily.