Looks like grass, sow thistle, and oxalis or clover. It looks like oxalis from here, but it's hard to tell from a picture and when it's that young. Has it flowered at all? The grass and sow thistle are fine. If it's clover, it's fine. Oxalis is high in oxalates. I don't feed it as I have plenty of other weeds, but I would think it is like anything else that's high in oxalates in that it's ok in moderation for a well hydrated tortoise.
No idea which kind of grass it would be, so is any kind of grass fine? I have been feeding the sow thistle (thanks for the ID!) and the oxalis/clover. I have not seen it flower, so I don't know what it is. The torts eat it from time to time, but not much of it...
Here's a pic of something else from outside that I've put in the indoor enclosure:
I pretty much operate under the assumption that any grass not sprayed with chemicals is fine.
Does the oxalis/clover have black speckles on it? My oxalis has little black spots.
I don't know what the second picture is. Has that flowered? Are the leaves stiff? waxy? puffy? Is it really small and delicate? If so, I think that just started growing in my yard too and I haven't yet had a chance to identify it.
OK, let me look at my books and see what I can find. Most of my resources are on native plants and if it's not native, I'll have to talk to the horticulturist. I need to get some hours in at the Nature Center anyway, so if someone here doesn't pipe in, I should know what it is this week sometime.
Common chickweed? Do you agree?
Only us crazy tortoise keepers actually cultivate weeds.
I picked up some chickweed like it was sod and put it into an enclosure that I am getting ready in the hopes that it grows. There are some seed suppliers online - mostly herbalists.