I am growing Wrinkled Crinkled Crumpled Cress now. Taste is acceptable. One is in the ground, one in the greenhouse. Neither are thriving at the moment. I don't think they are as cold hardy as I would like. I had another which I took inside and it got spider mites, so it got tossed. If they survive and make spring greens I'll let you know. When I googled winter cress most sources were in the UK. I feel like we are a much different climate here and you might do better looking for a local version.

Thank you Amy!

I have curly cress and Belle Island upland cress, but I grow them for eating in salads not for insect control/as a trap crop, which is what I assume you were hoping to do with the wintercress? I can add some seeds of my two kinds of cresses to the seeds I'm sending you. Let me know if you want to try them.

I think that wintercress (which is a noxious weed in some of the USA's more northern states) is only toxic to one of the three main brassica pests we have here in OK, so you might find it would backfire on you by attracting more of all three caterpillars/moths and only killing one.

I have not been overwhelmingly happy, or even moderately happy, with very many trap crops. They only work well for me, when they work at all, if I can grow them well away from the actual crop in order to lure away the pests. I used to always grow tons of sunflowers in my garden merely because I love them. Once I got to really watching and realized how many green stink bugs and caterpillars they attracted to my garden, I switched methods and started growing them well over 100' away from my garden in order to lure the stink bugs away from my garden. It is easier to focus on killing the stink bugs and caterpillars on the sunflowers when there's nothing edible around that I'm trampling while trying to kill stink bugs. It doesn't mean there's not stink bugs in my veggie garden, but I think it helps lure a lot of them away from the garden and every little bit helps.

Okay. That would be awesome. I have a lot of space. I plan to put the sunflowers at the bottom of the garden this year. My stink bug problem does seem to be growing and I'm guessing next year will be a buggy year! Hopefully, we'll freeze a lot more. I hope.

I haven't had any luck with trap crops, either. I have seen excellent tomato growth nearby lambsquarters. Of course, I like to eat lambsquarters. I don't know if it is the dynamic accumulation. I've always assumed the accumulation effect is slow, not immediate. It's probably cumulative over time more than anything else. By mid and late summer it provides some dappled shade for the tomatoes.