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Cornflower 'Blue Boy' - Kew Flowerhouse CollectionCentaurea cyanusBlue-Bottle, Bachelor's Buttons

Hardy Annual

What is Hardy Annual?
A plant that completes its entire life cycle (growth, reproduction, death) in one season.
Capable of withstanding outdoor winter temperatures down to -15C.

£3.99

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These packets are produced in association with Kew Gardens

Easy to grow and flowers abundantly

Excellent in the cutting garden or weaving through borders

Attractive to pollinators

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Please note: This product cannot be delivered outside the United Kingdom.

Height Up to 120cm (47in)
Spread Up to 30cm (12in)

Hardy Annual

cottage gardenswildlife gardenscut flower garden

full sun

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Sowing Months Flowering Months

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Description

The Kew Flowerhouse range of seeds from Thompson and Morgan has been specially created alongside the experts at Royal Botanic Gardens, Kew to bring the beauty of the garden inside. This outstanding range of handpicked seeds are perfect for enjoying in the garden or in the home. This range includes show-stopping flowers and elegant floral fillers ideal for a bouquet.

One of the most nostalgic of wildflowers, cornflowers immediately evoke summer meadows from days gone by and romantic cottage gardens. 'Blue Boy' is a tall variety, featuring masses of double, bright blue flowers held on slender stems. It's perfect for mini-meadow schemes grown with poppies and ox-eye daisies, running through borders alongside calendula or sown into the cutting garden. With deadheading, it will produce flowers in abundance for many weeks.

Height: 1.2m (47"). Spread: 30cm (12”).

Show Codes

1 Packet (400 seeds) (KC9721)

Sowing

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.

More Info
Water regularly until plants are fully established. Deadhead faded cornflower blooms to prolong the flowering period.
Delivery

Seeds and garden supplies will normally be delivered within the time period stated against each product as detailed above. Plants, bulbs, corms, tubers, shrubs, trees, potatoes, etc. are delivered at the appropriate time for planting or potting on. Delivery times will be stated on the product page above, or in your order acknowledgement page and email.

Orders for packets of seed incur a delivery charge of £2.99.

Orders which include any other products will incur a delivery charge of £6.99.

Where an order includes both packets of seeds and other products, a maximum delivery charge of £7.99 will apply - regardless of the number of items ordered.

Large items may incur a higher delivery charge - this will be displayed in your shopping basket.

Please see our Delivery page for further details, and more information on different charges that may apply to certain destinations.

For more information on how we send your plants please visit our Helpful Guide on plant sizes.

Thompson & Morgan strives to ensure that all its plants are delivered to you in the perfect condition for planting. Sadly, the time it takes to deliver to certain locations in the UK means that we can't guarantee this, so regretfully we are unable to ship live plants to the following areas: HS, IV41-IV49, IV51, IV55-56, KW15-KW17, PA34, PA41-48, PA60-PA78, PA80, PH40-PH44, TR21-TR24, ZE1-ZE3

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