I grew these just to figure out the answer to that question.
I don't see these in the grocery stores in my area.

Easily germinated, these turned into spindly seedlings I was sure would perish as soon as I planted them in the ground. However, they persisted, and flourished, and grew over 6 feet tall, and then flopped over and just kept growing and growing and growing similar to cherry tomatoes 'vines'. I had big bowls of tomatillos all summer/fall, and only the hard freeze could kill them. The fruit was flawless, no pests could touch it.

I made salsa verde, which was excellent. Tangy taste.

The only drawback was that you can only eat a certain amount of salsa verde, before you need to find some Mexican friends in the neighborhood who can teach you how to properly use up all the excellent harvest.

Plant them in a sunny area since the ones I had in shadier spot didn't do so well..

Grew indoors and faster than tomatoes. Still waiting from sign of purple husks. Plenty of flowers.

The plants are strong and healthy, but haven't produced much fruit. This is my first time growing this purple variety so hopefully it is just slow.

Its to late to plant but so looking forward to planting next year. The plain tomatillos seeds I got this year are abundant and I cant wait till they are ready. I bout 130 packs of seeds from MI gardener this year and every pack of seeds is doing amazingly well. Thank you

I am hopeful that I can get this second bunch to maturity. So far they ar looking strong! I will let them grow larger this time before putting them in the ground even if I need to up-pot them. Caterpillers seem to love eating tomatillo leaves, so will have to stay on top of spraying. I'm really excited to try these, as I have only tasted the green before and I am finding out purple vetetables are healthier because of the anthocyanins!