Can I plant snapdragons right next to grass or will the grass choke the flowers out?

I planted the snapdragons but did not put them in a flower bed, i just planted them in right with the grass. Will this work. snapdragons seem like pretty tough plants.

Can I plant snapdragons right next to grass or will the grass choke the flowers out?
You can snapdragons ( Antirrhinum)likes full sun just don't go cutting the grass with a lawn mower and keep the grass around them short for a little while and give them chance to grow taller...and don't forget to collect seed for next year (the seed will be in little brown cups and very fine much better when you grow your own) this is the only problem growing in grass the seeds that fall don't get to grow well they get cut down when you cut the grass in the beginning of the year.