What is the smallest length x width I can use for very sturdy legs?

Woodworking is your worldwide home for discussion of all things woodworking, carpentry, fine furniture, power tools, hand tools, and just about anything else about making - anything - from trees!
Looks like something wants to share my peppers, and I don't want to share! Anybody have any ideas on whom the culprit could be and how to squash them dead real quick like??

Hot Peppers, sweet peppers, spicy stuff, and more.
My Habaneros are tight but plentiful. They just started turning colors! Can't wait 'til they're ripe!

Hot Peppers, sweet peppers, spicy stuff, and more.