I live in southwest Florida. When should cut back my asparagus plants the are very green and producing seeds right now.
Certified GKH Gardening Expert
It is best to cut them back when they go dormant. If they do not have a dormancy in your area, the I would wait until late fall or winter, when they aren't actively growing. This article will give you more information: https://www.gardeningknowhow.com/edible/vegetables/asparagus/cutting-asparagus-foliage-back-in-autumn.htm