If it was me....I would leave them, they will add Asparagus to your bed (you can't have too much Asparagus ;-) The Males are better (but mainly to a commercial grower ,whose livelihood is based upon critical percentages ,their bottom line has to be met or they don't make a profit), but for a backyard gardener, the difference in production is maybe 10% less than optimum. Totally Wonderful... Enjoy

Catherinet makes a good point - caps can be easier to read when someone has vision issues. Many plant stems will continue to grow after cutting. And you can most certainly grow new green onions from the cut-off ends if there are still roots attached. I've done it myself. That's how I got my lemongrass, years ago. I also grew a cabbage plant from a store bought head that had roots sprouting from the base. I cut out the core, planted it in a container, put it on a sunny windowsill, and it put out new leaves - no heading tho. I've also done the same with celery. If there's enough of the root 'plate' still attached, and it's fairly fresh, it can put out roots and grow. Here's what the cabbage looked like. Unfortunately, it died off after I transplanted it outside - I think because it was too hot and humid.

I was really hoping that was not it. I found several asparagus beetles today. There are a lotta larva. I checked the plants daily last year. I am surprised to find this many but it beats letting them demolish my plants. Thanks!

Whether they are young or older crowns they may need at least a year to establish a new root system to become fully productive and start to produce a good amount of sizable spears.