`Blue Butterfly.' Will it survive in Houston, and must it be planted in shade? The tab on the plant says full sun, but it also says cold hardiness to -30 degrees. -- C.N., Houston A. Hybrid ...
Prized for their beautiful, tall spires of blue blooms, delphiniums are a staple of English style perennial borders and cottage gardens. If blue isn’t your color, you can choose delphiniums in a few ...