Posted 06-09-2001 at 06:34:19
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John, here is what I would do.
Since you only want to pick the asparagus in the early Spring, mow everything after frost kills the asparagus. Mow right down to the ground, since it won't hurt the asparagus at all.
For the Ivy, you have a couple of options. First, you can ignore it. Pick the asparagus in early Spring before the ivy gets out of hand, then ignore the whole patch until Fall. Second option is to try to kill the Ivy with chemicals in early Spring, trying to avoid the new asparagus shoots. However, this is pretty poor advice since it is dangerous to be spraying near what you intend to immediately eat.
I use Ortho brush killer, which works pretty good on poison ivy.
I wouldn't try mowing the asparagus while it was into Summer growth.