Answer: Asparagus takes a surprisingly large amount of space becuase the root systems are huge. Plant the crowns about 18 inches apart, and space the rows about four feet apart. The soil should be prepared as deeply and as well as possible because the plants are very longlived and a well prepared planting bed is repaid many times. I suppose the realistic answer is ... how much asparagus do you plan on eating and how much soil preparation do you feel like doing.
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