Frequently Asked Questions
Why do some of my asparagus plants have red berries?
Asparagus plants are either male or female, and open-pollinated seed gives you a mix of both. Female plants produce red berries in late summer, and those berries aren't meant to be eaten. They put some energy into berries and seed, so males tend to give you more spears, though females often produce thicker ones. If you want a tidier, more productive bed, you can pull the females once they reveal themselves, but both are fine to harvest.
How do I harvest asparagus spears?
Once a bed is established, cut or snap spears when they are about six to eight inches tall and roughly as thick as a pencil, taking them at soil level with a sharp knife. Harvest for a few weeks in the early years and up to six to eight weeks in a mature bed. Stop when the new spears turn thin and spindly, and let them grow into ferns, since the ferns feed the crowns for next year's crop.
How do I keep weeds out of an asparagus bed?
Weeds are the biggest threat to young asparagus, because the seedlings are small and slow in their first seasons. Start with a clean bed, pull weeds by hand rather than hoeing deeply near the crowns, and lay mulch to hold moisture and block new growth. A weed-free bed in the first two years pays off for the next fifteen.