1. The design of the root guide groove on the inner wall of the hole is more conducive to the vertical growth of plants and prevents root entanglement.
2. The upper mouth of the plug tray is designed with a water outlet to ensure the water flow between different holes and make the plants grow neatly
3. The surface vent design allows air to circulate up and down the plug tray, keep the leaves dry and reduce the possibility of disease.
4. The convex point design at the bottom allows rapid water seepage and prevents root rotten.