Steve Frillmann of community-gardening group Green Guerillas (try saying that five times fast!) helps his 8 million neighbors create and protect green spaces in New York City. As this week’s InterActivist, Frillmann chats about how something as simple as giving away a few seedlings can make a big difference in helping a community grow. Send Frillmann a question of your own by noon PST on Wednesday; we’ll publish his answers to selected questions on Friday.