Out door tort pen update

So I have planted the seeds from carlolina pet supply and they came up beatutifully. Only took a couple of days for them to start sprouting. The only problem was my tort didn't seem too interested in eating them. I think he got used to only eating what I put in his food bowel and he forgot he is suppose to graze for himself. It might also have to do with the fact that the weather is getting a little cooler and there is not enough sun. However, if I pick the plants and then put them on his dish he will eat them. Go figure...