>It's awful how weed seeds blow around. I keep my seed pots in a >three-sided, glass-roofed shed, and still cress and Epilobium seeds >blow into them. And in addition there are all those things the birds plant, at least in my pots. Some of them come directly from the bird feeders like sunflower seeds and millet, but they also bury tan oak acorns so I often have tree seedlings coming up. I'm always ambivalent as I rip them out knowing that so many of these trees are succumbing to Sudden Oak Death. In the beginning I got excited when all that millet was coming up not knowing what it was, but now quickly pull it out before it gets too far along. My ground in summer is especially hard since it is so dry and covered in tree roots in addition my pots are especially attractive as an alternative for the birds to use. At the last Cal Hort meeting I talked to a man who has to cage his pots because his neighbor add peanuts to the fence between their properties for the squirrels and his pots get dug out as they are added to the pots and then the squirrels find the bulbs and he really is in trouble. At least I don't have that problem and the resident chipmunk seems to have departed after I added one moth ball to each Calochortus pot one year after someone on this list suggested that. The year before all the flowers were eaten. Mary Sue