Hi- not sure if you still need help. I am growing tomatillos this year as well and haven't been able to find much out besides this: http://www.oracletown.com/garden/tips_tomato.html

At about 2/3 down page it talks about tomatillos, and basically says to grow them the same way as they list for tomatoes (except to use slightly less water). So, I am assuming they are saying to use the same recommendations on companion plants, as well. Hope this helps!

Hi - I've been growing tomatillos for 10 years, and yes, they do grow similar to tomatoes, but beware - unless you're planning to process them on a commercial scale (which I have done), a couple of plants will do you. THEY ARE PROLIFIC! They like lots of manure and/or compost and I generally cage them. Bees LOVE them! and you can make jam with them that tastes like clover honey! (at least that's been my personal experience with them) Have fun with your garden!

i can't find any companions for it either, but this WAS interesting . . .

'Tomatillos are almost completely self-incompatible and require at least two plants to normally produce fruit.'

Here is a link that might be useful: tomatillo

thanks for the link! and yes! we're definitely growing them again this year. we only need 2 plants for our family of 5! and i still have enough to share with all the neighbors.

I am desperately struggling to get any fruit out of my purple tomatillos, I have tomato fruitworms galore, not a single fruit is working. I have sprayed spinosad and nothing, today I am giving a try at neem oil. I tried to plant parsley near the plants and no effect. Don't plant alike with alike, I have american nightshade and had cape gooseberry near them and thats what attracted the the stupid fruitworms. Now I am having to resort to pesticides. I am also going to plant a bunch more purple tomatillos so I can at least try one fruit. Anyone know the best plants that deter these stupid fruitworms?