I planted well over one hundred seeds in very sandy Chihuahuan desert of southern New Mexico. About twenty four germinated of which 18 have survived. Some are over 6 inches tall and others only a few. I suspect small rodent, possibly mice, as well as birds have been the problem. I watered once a week during the early winter with seeds germinating in late spring. That was increased to every three days in the summer which may have been too much. I made chicken wire cloches that helps but hardware cloth would be better.