Brooklyn Based did a round up of garden centers last spring, and just published a list of upcoming plant sales in the borough.

Cobble Hill Tree Fund's Annual Plant Sale this Saturday (rain date Sunday) from 10:30-2:30 pm in front of Cobble Hill Park, the Annual Hoyt Street Association Plant Sale, Saturday 10-6 and Sunday 11-5 at the garage at 110 Hoyt St, and the Brooklyn Botanic Garden's Plant Sale May 7 and 8.