Next time I’ll just use plain terra cotta!

Next time I’ll just use plain terra cotta!

Forgive me if this has been posted recently; I just joined... I bought a cute little pot at Crate and Barrel today, and I planted my mini rose in it just now. I took it to the sink to water it, and guess what! No drainage hole. (I was in a hurry when I bought the pot, so I didn't check). It's this one if you are curious. It does have a terra cotta type bottom, so maybe that allows for seepage? I've never had a pot with no drainage hole. I was already nervous about the mini rose anyway, because I've never had any roses, so now I am even more nervous that I am going to drown the plant. Should I repot the mini rose in a pot with a hole? Or can I just water the mini rose in small amounts (1/4 cup every three days or something), taking care not to drown the plant? And if I do repot the rose, what do I put in the no-hole pot? It was $13, so I want to use it. Cactus, so I don't have to water it very often? Any other plant that can sit in a little water?
Need alittle help

Need alittle help

New seedlings

New seedlings

Help!

Help!

Finally posting some pics, of my bedroom at least!

Finally posting some pics, of my bedroom at least!

Herb questions (and photos)

Herb questions (and photos)

From my mother’s garden

From my mother’s garden