I plant clovers and weeds... I place the clovers on a used egg container and would so I can bring them inside the house. I would swap every other day to replenish. this photos was take from my 1 year old Greek tort terrarium.
I wouldn't feed too much clover, as it contains a lot of oxalic acid, which prevents your tortoise from absorbing calcium correctly. A bit is okay, but it shouldn't be one of the main ingredients in your tortoises diet.