Dear Bill, Thanks for responding. I think Tony Palmer uses large plastic bags too so maybe this is what all the expert New Zealand bulb growers do. Could you be a bit more clear about what size a PB 49 and 8-12 PB is? How deep and how wide. You can put it in metric if you like and I'll convert it. Since I don't see these kinds of bags easily available here (although everyone may now write and tell me where they are), I am interested in the dimensions. Also how long do they last before the sun wears them down. All those Brunsvigias are very pretty. I hope to see one of mine in bloom one day. Mary Sue