Answer: Congratulations on your first vegetable garden! I don't know many people, much less beginners, who "go for it" the way you have!
Actually, you'll save yourself some trouble by planting your seedlings into a nursery bed rather than into their permanent location, since you have to "weed out" the female plants. Only male plants produce good crops of spears. The female seedlings aren't productive.
When danger of frost has passed, harden off your seedlings. It's best to tranplant them when they're about 1 foot tall. Plant the peat post 2-3" deep in a nursery bed, and when the ferns flower, cull the females. Female plants have flowers with large, three-lobed pistils; male flowers are larger and longer than females. Next spring, transplant the male plants of both varieties to the 4x8 bed you have ready for them. Just keep them marked so you'll be able to keep track of the performance of the two. Enjoy!
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