Not a Nasturtium. Did you get this from a nursery? It reminds me of Velvetleaf Mallow, but that would not be sold in a nursery!

It might be a Hawaiian woodrose

The Hawaiian woodrose that I know is a vine. There is a velvet mallow that is a native of the Edwards plateau , Allowissadula holosericea (a definite mouthful). It is hard to have a definite ID on this one so early because it changes character as it ages.

Velvet leaf mallow

If I see the seeds right, they look like a velvet mallow, I thought the v m leaves were much longer

That looks like a vine to me

Are the leaf edges deeply serrated, I can't tell from the pix

When I looked at the seed pod on my computer, it looks exactly like a v mallow

Christopher, I bought it because I thought it was a Turk's Cap (Pam's Pink). A little disappointed.

Linda, Got it from San Antonio Botanical Garden. All other plants had labels except this one.

jolanaweb & wontonamara, It is definitely not a vine. The leaf is heart-shaped. I planted it in ground already. I'll take another picture for you.

I appreciate you all's response.

A pic of Velvetleaf Mallow from my yard.

The leaf sure looks velvet.

http://www.wildflower.org/plants/result.php?id_plant=ALHO4

I think it IS Velvetleaf Mallow:attracting butterfly, eye-catching... now I am very happy I got it :-). Thanks guys!