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Oenothera biennis - Kew Pollination CollectionEvening Primrose

Hardy Biennial

What is Hardy Biennial?
A plant that completes its entire life cycle in two years, growing in
the first year and reproducing and dying in the second. Capable of withstanding outdoor winter temperatures down to -15C.
20% (1 Review)

These packets are produced in association with Kew Gardens

Fragrant golden yellow flowers in summer are loved by insects

Self-seeds to create naturalistic colonies

Fulfilled and sold by Thompson & Morgan

Choose available pack sizes:

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Height Up to 150cm (59in)
Spread Up to 60cm (24in)

Hardy Biennial

cottage gardensscented gardenswildlife gardens

full sunsun or semi shade

JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC
Sowing Months Flowering Months

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Description

The Kew Pollinators range of seeds from Thompson and Morgan has been specially created alongside the experts at Royal Botanic Gardens, Kew to attract and support a wide range of pollinators, including bees, butterflies and beetles, as well as a number of other important pollinating insects. Helping these pollinators to thrive is hugely important for our eco-system as a whole and these seeds, in their striking packaging inspired by artwork from the Kew archives, will help to create the environment which they need to thrive, with varieties chosen to help a wide range of pollinating insects, including some night flowering plants to help moths which also play an important part in our gardens.

Best known as Evening Primrose, this biennial wildflower is a magnet for pollinating insects. With an upright, bushy habit, it produces fragrant, bright yellow, cup-shaped blooms from slender pointed buds in summer. Once established it will self-seed to create sprawling colonies of plants, making a fabulous addition to wildlife areas and wildflower planting schemes, where it creates a naturalistic effect. A superb choice for sunny spots on light, sandy soils. Height: 150cm (59"). Spread: 60cm (24").


1 packet (500 seeds) (KB7582)

Sowing

Direct sow Oenothera seeds outdoors where they are to grow from March to June. Choose a position in full sun on well drained soil which has been raked to a fine tilth. Sow seeds thinly, and lightly cover seed with a sprinkling of soil. Water the ground regularly, especially during dry periods. When seedlings are large enough to handle, thin them out to 30cm (12") apart.

Alternatively sow indoors from August to November on the surface of a good seed compost, just covering the seed with a thin layer of compost or vermiculite. Place in a propagator or seal the seed tray inside a polythene bag, maintaining a temperature of 10-15C (50-60F) until after germination which usually takes 14-21 days. Do not exclude light as this helps germination. When seedlings are large enough to handle, transplant them into trays or 7.5cm (3") pots and grow on in cooler conditions until large enough to plant outdoors.

When all risk of frost has passed, gradually acclimatise Oenothera plants to outdoor conditions prior to transplanting them outdoors in any well drained soil in full sun. Plant out at a distance of 30cm (12") apart.

More Info
Once established, Oenothera will virtually look after itself, happily self-seeding to produce new seedlings in the following spring. If seedlings are not required, simply deadhead the faded flowers. Plant can be cut back to just above ground level in autumn.
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 £4.99.

Where an order includes both packets of seeds and other products, a maximum delivery charge of £6.99 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.

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