Technical Abstract: Herbicides and repeated cultivations are used to control weeds during asparagus establishment. Selecting a site free of perennial weeds and using glyphosate or paraquat as a sterile seedbed technique helps control many weeds. Linuron or terbacil can be applied to direct seeded asparagus if a band of activated charcoal is applied over the seed row. After asparagus has emerged, linuron can be applied for broadleaf weed control and fluazifop-P or sethoxydim for grass weeds. Repeated cultivations and handweeding may supplement herbicides. Weed control in established asparagus includes cultivation, preemergence herbicides, and spot treating or hand weeding weed escapes. Spring cultivation incorporates the fern and removes winter annual weeds. Preemergence herbicides labeled for use in asparagus are napropamide, trifluralin, linuron, metribuzin, diuron, simazine, norflurazon, and terbacil. During the cutting season hoe out perennial or herbicide resistant weed patches or spot treat with glyphosate. Escape broadleaf weeds can be controlled with 2,4-D, dicamba, and linuron and grass weeds can be controlled with fluazifop-P. Cultivation controls weeds but delays harvest and may injure shallow asparagus crowns. During the fern stage of growth 2,4-D and glyphosate may be applied as a shielded and directed spray at the base of the fern.