In order to support a plant in a bucket that has a top and outside rim, a trellis base having a base surface portion and a rim engagement portion is disclosed. These portions seat on the top and outside rim of the bucket and extend around and beneath the top and outside rim of the bucket. A bottom portion of a further extension wall carries a hold down means which when positioned beneath the top and outside rim of the bucket, anchors the trellis base on the bucket. An inward bias means to inwardly bias and maintain the hold down means in position can also be used. The base surface portion carries at least one removable upright trellis holding means to removably carry the plant trellis.