For the asparagus spacing: Single Plants: 1’ 6” each way (minimum) Rows: 1’ 6” with 1’ 6” row gap (minimum)
My spacing between rows is closer to 30”, so I can get the tiller between them.
Also, the packages of dormant roots will have instructions on them.
You want plump, slightly damp feeling, limber roots; not dried out, brittle or limp, nor skimpy/skinny ones. Also, you want several strong roots on each crown; and the crown looking healthy, without signs of mold or mildew, nor dried up.
The crown has the buds to put out the new shoots, but the roots are where the energy is stored to do that job, until the new foliage is established and can start replenishing the roots.
Can’t help with the sweet potatoes.
Thanks ever so for furthering my fund of info on the asparagus.