this is useless for bud cuz it will grow to the light.. so unless u have a bulb under it, it will jus turn bak up.. and if u have a bulb at the bottom ude have to be careful not get it wet... even if it grew upside down, what r u gonna do, raise ur plant and light weekly??? this thing is made for tomatoes cuz tomatoes r heavy and pull the plant down which would have ur tomatoes sitting on the ground rotting... so this thing keeps them off the ground... its all bout gravity