1, pot control method: the size ratio of flowerpot to plant should be 1: 3, which can limit the growth of root system and keep the plant size unchanged.

2. Remove the growing point: When the new bud grows to 2-3 cm, remove the growing point, which can promote the regeneration of branches and leaves on the stem, control them not to grow vines, and make the branches and leaves flat and the plant shape full.

3. Using the phototaxis of asparagus: rotating the direction of flowerpot in time can correct the growth shape of branches and leaves and keep the plant type unchanged.

4. Object shading method: that is, press the branches and leaves with cardboard or shade the sun, so that when the branches and leaves grow, they will rotate or bend to shade when they meet objects, thus achieving the purpose of modeling.