Answer: To some extent this depends what you are planting. Most annual flowers and vegetables are set out after the last spring frost because they are tender and will be damaged by frost or freezing weather. Container grown perennials, trees and shrubs can be planted any time the soil can be dug, meaning it is not frozen and not too muddy. (This assumes they have been outside and are acclimated to the weather and not fresh out of a greenhouse.) Bare root plants are usually planted in very early spring so they can wake up naturally with the season. Spring blooming bulbs sold as bare bulbs are planted in the fall. In general terms, the sooner you plant the better because this gives the roots time to become established while temperatures are cooler and rain is generous. I hope this helps.
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