Keep pests and diseases at bay
Although they are hardy, once your sweet peas are sown they need a level of care to keep them healthy.
To keep hungry mice away, soak the seeds briefly in liquid paraffin as an effective deterrent.
Slugs and snails will be attracted by their tender young growth, so regularly spray seedlings with Grazers G2 slug and snail repellent to keep them safe.
Standing pots on gravel in the coldframe also helps.
Poor ventilation is a common mistake that leads to fungal problems such as botrytis grey mould. When weather is warm enough, open the greenhouse and coldframe door to circulate air. Close them at dusk.
Poor ventilation leads to mould Stand pots on a layer of gravel to deter slugs and snails