Answer: It is often necessary to prop up asparagus once the tops have filled out, so it is not necessarily a problem. An easy way to do this is to put a stake at each end of the row and run string from end to end, rather than staking individual plants. Asparagus should come back stronger each year for the first few years. Each fall, after cleaning away the old stems, topdress with a heavy layer of well rotted manure and/or compost and an organic mulch. This will help to feed the soil and keep the crowns well covered as well as insulate them and keep down weeds. It should not be nessary and would be rather problematic to add more soil. If you did not plant the crowns very deep originally, you might try using a particularly generous layer of compost and mulch every fall. This would gradually increase the amount of soil over the roots.
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