Answer: Planting dates vary depending on what kind of vegetable it is and the weather each year. Tomatoes, peppers, melon and squash should be planted a week or two after your last frost so the soil has had time to warm up. Broccoli, cabbage, potatoes and peas are more cold tolerant and can be planted before the last frost.
Also be sure the plants have been conditioned to being outdoors before you plant them. If they came straight from a greenhouse they will need to be gradually acclimated over the space of a week or so, beginning by setting them in a sheltered shady spot and gradually moving them to sun all morning before planting in the garden in full sun. This helps avoid transplant shock.
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