When to start: In cold winter areas, sow in seed starting containers in early spring about 6-7 weeks before the last frost date, then plant out as soon as soil can be worked; sweet peas can handle light frosts. In mild winter climates, where the ground does not freeze, sweet pea seeds can be fall-sown directly into the garden from September through November to grow strong root systems and then bloom in spring. But if you don't get your sweet peas planted in fall, you can still get a nice…
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