Do you mean dahlias? Zinnias are annuals so you usually grow them from seed. Just plant them somewhere else next year.

As chatty says, you transplant roses when they're dormant. Early spring is best, after the ground thaws. Make sure to dig a big hole and enrich the soil before planting in a new, sunnier spot with good air circulation.

The big problem around here with roses is black spot -- and that happens because of the high heat and humidity. You can avoid it somewhat if you give the rose plenty of room between it and the wall so the air circulates around it. I have too much shade for roses, but have roses anyway, and I never spray, which the experts say you really must do in this climate. Consequently, most summers after the initial blooms, one of my roses gets black spot and ALL the leaves fall off, so I'm left with green thorny branches. Because it's been a cooler summer, though, this year wasn't so bad.

[ August 21, 2004, 10:07 AM: Message edited by: DJ ]