Syringa microphylla, English name Sytingmicophylla, also known as Four Seasons Syringa, Ermei and Wild Syringa. It belongs to the genus Syringa of Oleaceae and belongs to deciduous shrubs. Morphological characteristics are about 2.5m high, and the young branches are grayish brown and pilose. Leaves ovate or elliptic, entire, hairy. Panicle loose, lateral light purple; The flowering period is from late April to early May; Autumn from late July to early August.

Syringa microphylla likes plenty of sunshine and is also tolerant to semi-shade. Strong adaptability, cold tolerance, drought tolerance, barren tolerance and less pests and diseases. Appropriate use of good drainage, loose neutral soil, avoid acid soil. Avoid waterlogging and damp heat.

Clove leaflets should be transplanted before bud germination in early spring. In the transplanting hole, first apply enough base fertilizer, cover a layer of soil on the base fertilizer, and then fill the seedlings with soil. After planting, water it once and then water it 2-3 times. Spraying new high-fat film can improve the survival rate. Spraying Wang Cuihua No.3 in time can transform the vegetative growth of plants into reproductive nutrition, inhibit the overgrowth of main shoots, promote flower bud differentiation and blossom more.

Before germination in mid-March, the clove leaves were pruned, the dense branches, weak branches and pest branches were desulfurized, and the long branches were cut off in the middle to make the crown ventilated and transparent. If there is no seed left after the flower withers, the residual flower and two buds at the lower part of the ear can be cut off to reduce nutrient consumption and promote the germination of new branches and the formation of flower buds. Pruning can be carried out once after defoliation, to ensure that the crown is round and beautiful, which is conducive to growth and flowering in the coming year. After each pruning, the wound should be coated with a layer of calluses antiseptic film to make it heal quickly.

Syringa microphylla has strong adaptability. As long as we pay attention to weeding, preventing waterlogging in rainy season and watering in drought, we can grow smoothly. Lilacs don't like big fat, so don't apply too much fertilizer, lest the branches grow white and affect flowering. Generally, decomposed compost can be applied once a year or every other year before winter, and a new high-fat film can be sprayed in time to keep fertilizer and moisture. Syringa microphylla has few pests and diseases. The main pests are aphids, marsupials and moths. It can be controlled by spraying 800- 1000 times of 40% dimethoate emulsion or 1000 times of 25% thiophosphate emulsion.