growing asparagus's in a garden?

I have some asparagus growing in my garden. I used plants but they were 2 dollars apiece. can I buy seeds and whats the best way to grow it?

Answers:
Buy one-year-old, healthy, disease-free crowns from a reputable crown grower. A crown is the root system of a one-year-old asparagus plant that is grown from seed. Each crown can produce 1/2 lb. of spears per year when fully established. A list of crown growers appears at the end of this fact sheet.

Asparagus can be planted from seed. However, caring for the small seedlings until they become established can be time consuming. Also, because the seeds are spaced a few inches apart, the crowns will have to be dug and transplanted to their permanent, wider-spaced location in the garden after one year. Thus, one year of potential spear production is lost due to transplanting.

Other answers:
buy the plant or root. Plant it in a 12 inch deep hole but only put 2 inches of dirt on top. Put about 2 inches of dirt on a month for two seasons. It should be mounded up. Do NOT harvest any until the 3rd season.
buy the plant or root. Plant it in a 12 inch deep hole but only put 2 inches of dirt on top. Put about 2 inches of dirt on a month for two seasons. It should be mounded up. Do NOT harvest any until the 3rd season.
If you work a good deal of manure in with the soil at the bottom of the 12" hole you will be amply rewarded. Resist the urge to harvest any before the third year. Again, you will be amply rewarded.
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