Answer: Sweet peas are similar to garden peas in that they need to be planted very early in the spring, just as soon as the soil can be worked, or at least a month before the last anticiapted frost date. They are very cold tolerant and conversely hate heat. Once the temperatures and soil warm up, they stop growing. You may find that soaking them in water for a few hours immediately before planting, planting them in a trench that you fill in as they begin to grow, and using an innoculant will help to get them going sooner and grow more vigorously. You also need to use a soil that is light and fluffy, meaning well aerated, because they will stop growing if their roots are stressed for air.
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