I have lots of these on my asparagus at my allotment but don’t know what he will eat in my garden .
Common asparagus beetle adults overwinter in sheltered locations such as under loose tree bark or in the hollow stems of old asparagus plants. Adults appear in gardens just as the asparagus spears are emerging from the soil in spring. The beetles lay numerous dark brown, oval-shaped eggs on end in rows on the spears, ferns, or flower buds. The eggs hatch within a week. The larvae migrate to the ferns to start feeding. They feed for about two weeks and then fall to the ground to pupate in the soil. About a week later, adults emerge to start another generation, feeding on the ferns for the remainder of the growing season.