Your info on asparagus was helpful, but when I transplant seedlings into the garden, at what depth to I put them in the furrow? I'm not sure where the 'crown' is on my seedlings.
Typically, you will want to keep your seedlings in a container or start them in a sheltered bed for a year before you plant them out. They don't transplant well until they are a year old. After they are a year old, they will have developed a crown and you can follow the directions for planting them out.
I just read your article regarding transplanting asparagus plants. Is it still possible to transplant asparagus at the end of May even though I know it's not the optimal time? We live in the midwest and our asparagus plants have almost gone to seed.
You can. You will need to make sure it gets extra water. and if it gets hot, provide some shade for the plants while they establish.
My one year old asparagus plants are three feet tall and limp--falling over limp. Should they be cut back?
This article will help: https://www.gardeningknowhow.com/edible/vegetables/asparagus/cutting-asparagus-foliage-back-in-autumn.htm
I have been cutting my asparagus now for about four weeks. It's still coming up but I want to know when I should let it go to seed.
Early to mid June is the best time to stop harvesting and let it go to seed.
I'm assuming this is an old wives tale, but when prepping space to plant asparagus, I've been told to add old nuts and bolts (metal) to the soil before creating the bed. Is there any truth to this?
I would choose to steer clear of this method. This article will help with the planting and growing of asparagus plants: https://www.gardeningknowhow.com/edible/vegetables/asparagus/planting-asparagus-how-to-make-an-asparagus-bed.htm
After our asparagus is harvested, we were thinking of using the rows between the asparagus to plant something else, perhaps a squash or zucchini. Do you have any advice about whether this is viable or not recommended?
As long as the asparagus foliage is not blocking too much light into the row spaces, this should be fine.
How do I care for asparagus?
This article will help: https://www.gardeningknowhow.com/edible/vegetables/asparagus/growing-asparagus.htm