Adjustable sapling fixing frame

The utility model discloses an adjustable sapling fixing frame which comprises a first fixing ring and a second fixing ring, the front face and the back face of the first fixing ring are both fixedly connected with first positioning blocks, and the front face and the back face of the second fixing ring are both fixedly connected with second positioning blocks. A clamping plate is movably connected to the top of the first positioning block through a movable shaft, limiting holes are evenly formed in the top of the clamping plate from left to right, a through hole is formed in the top of the second positioning block, and a limiting rod is slidably connected to the inner surface of the through hole. According to the sapling supporting device, the first fixing ring and the second fixing ring can be connected and fixed, meanwhile, the inner diameter between the first fixing ring and the second fixing ring can be adjusted, saplings of different sizes can be supported and fixed, and through the arrangement of the st