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Sowing and growing sweet peas

'Pulsar' (syn. 'Lilac Ripple') is the best of the flaked two-toned sweet peas

Top plantswoman Val Bourne reveals her 10-point plan for achieving success with sweet peas:

1. Buy quality seeds from a sweet pea specialist because seed quality varies.

2. Sow in late February and early March in deep black pots or root trainers.

3 Almost fill the pots with John Innes seed sowing compost. Press the well-spaced seeds into the compost so that they are covered by about ½in (12mm) of compost.

4. Label, and water using tap water from a can fitted with a rose. Protect the seeds from mice with chicken wire.

5. Keep the pots in an unheated greenhouse where it’s light and warm, roughly 18-20˚C (68-70˚F). Do not water the compost again until the green tips appear, usually after about two weeks.

6. Once the plants reach 4in (10cm), pinch out the tips to leave five leaves. This makes each plant bush out strongly.

7. After two weeks or so move the pots outside, but away from strong winds. Cover with fleece if necessary if the weather turns cold.

8. Prepare the ground well by digging thoroughly. Well-rotted organic material can be added at this stage. Erect your supports of choice.

9. Plant out once your bushy plants are about 6in (15cm) high.  Space them 6in (15cm) apart. If conditions are dry, ‘puddle’ them in by making a hole and filling it with water before dropping each plant in.

10. Provide ‘TLC’ for the following five or six weeks. Try to water them in the morning or evening, rather than at midday. And do not feed with extra nitrogen – the pea and bean family resents it.


‘Our Harry’ – The best mid-blue sweet pea ever, with wavy petals and fragrance.

‘Jilly’ – The best fragrant cream of all, with yellow buds that open to produce elegant wavy flowers held on strong stems. A soft alternative to icy clear-white.

‘Windsor’ – A deep-maroon red that comes to life when the sun shines; the only deep-red sweet pea with good scent.

‘Pulsar’ – The best of the flaked two-tone sweet peas. This lilac and white has a strong scent too. It makes an excellent cut flower, and is pretty in the garden.

‘Gwendoline’ – Large and dramatic with wavy cerise-pink blooms on a white ground. Strong stems and a heady perfume.


Simply Seeds and Plants
(01945) 880501

0844 573 8400

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One Comment

  • Syd Harrod says:
    1:07 PM on 20th April 2012

    Every August our Sweet Pea seed is tested for germination and we only sell seed that has 90% or higher results, but some people drown the seed and get lower emergence percentages. Every new customer of ours gets a page of basic cultural advice to avoid this problem.

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