The caterpillar-like plant is the caddisfly. Its underground stem is white and resembles a caterpillar in shape.

Grass caddis is a perennial herb. The rhizome is creeping, with dense fibrous roots and small transverse rhizomes with spherical fat tubers at the top; the stem is 30-120m high, with bristles on the edges and nodes. The leaves are opposite; the petiole is 1-3cm long;

The leaves are oval or oblong-ovate, 3-12cm long, 1.5-6cm wide, with a slightly sharp or acuminate apex, and a flat base to a shallow center. Shape, with regular scalloped serrations on the edges, and short bristles on both sides; the whorled inflorescences usually have 6 flowers, most of which are arranged far apart and grow 5-15cm long, with terminal false spikes;

Xunnium Strip-shaped, puberulent; calyx narrowly bell-shaped, with teeth about 9mm long, outer cover glandular pubescent, 10 veins, 5 teeth, triangular, with prickly tips; corolla pink to purple, about 1.2 in length cm, the tube has a ring of hairs, the upper lip is upright, the lower lip has 3 lobes, and the middle lobe is nearly round. The small nuts are ovoid, dark brown, with small tumors; the flowering period is from July to August, and the fruiting period is in September.

Planting method:

1. Soil conditions

The root system of caddisfly is well developed and is suitable for growing in loose and breathable soil. When planting caddisfly, The soil needs to be plowed first to break up the stones and clods in the soil to make it softer, and decomposed cake fertilizer must be added to the soil to increase soil fertility and promote the vigorous growth of caddisworms.

2. Fertilization management

When cultivating caddis flies, it is necessary to topdress urea, organic fertilizer and ternary compound fertilizer during the seedling stage of the plants to promote the growth of caddis flies. The speed is accelerated, and during the period of expansion of the tuber of caddisfly, it is necessary to apply compound fertilizer mainly composed of phosphorus and potassium to increase the yield of the plant.

3. Maintenance methods

Grass caddis flies are not tolerant to waterlogging. When breeding caddis flies, it is necessary to dig drainage ditches for the plants during the rainy season to allow water to accumulate in the soil quickly. outflow to avoid poor growth of the caddisfly, and the remaining flowers of the caddisfly should be cut off in time to avoid the loss of excess nutrients and allow it to grow healthily.