How to grow patchouli

Patchouli is fragrant and pleasant, as well as the efficacy of mosquito repellent and medicine. Many people will plant several pots of patchouli at home. So how to grow patchouli? Let's take a look.

I. Propagation methods

There are two propagation methods: seed propagation (new patchouli) and persistent root transplanting (old patchouli). The new patchouli is propagated by seeds, and the whole grass can be harvested in July of that year. The old patchouli means that after the seeds are collected, the old roots of the new patchouli are allowed to survive the winter in place, and the new seedlings in the next spring are unearthed and moved to the field to get the whole grass. It is generally believed that the new patchouli has more leaves and the cut piece is of better quality, while the old patchouli has many stalks and the cut piece is of poor quality. Therefore, seed propagation is often used in production, which is divided into spring sowing and autumn sowing.

2. Soil

Patchouli is not strict on the soil, the general soil can grow, but the soil layer is deep, fertile and loose sandy loam or loam is better. For fear of stagnant water, if you plant in low-lying land that is prone to stagnant water, the roots will rot and die.

Third, temperature

When the air temperature is maintained at 20-25 ℃, seedlings emerge in 10-15 days, and when the emergence rate reaches 70%, the film is removed and the suitable growth temperature is 18-25 ℃. Patchouli sown in spring in the seedling height 12cm, the main stem has 5 pairs of leaves, the basal leaf axil begins to branch, after June, the temperature rises, the rainy season comes, patchouli enters the exuberant growth period.

IV. Water and fertilizer

The stems and leaves of patchouli are used for medicinal purposes, and it is better to apply fertilizer with "total fertilizer" (including nitrogen, phosphorus, potassium), such as human and animal feces, cruller and so on. After the first topdressing, 1. 5-2kg per square meter of rotten and dilute human and animal manure water was applied after loosening soil in seedling height 3cm, and then when seedling height was 7-10cm, 15-20cm and 25-30cm respectively, after intertillage and weeding, the mature human and animal manure water 1500kg per mu or diammonium phosphate 10~12kg per mu were applied every mu, and should be watered after fertilization and no more topdressing after ridge closure. Timely watering in the dry season, drought resistance and seedling protection, and timely ditch drainage in the rainy season to prevent stagnant water from causing rotting roots.

V. other

1. Seedling: when the seedling height 3cm, and time to densify the seedling, or split the seedling, the seedling spacing is 6-8cm. There are 3-4 plants of patchouli planted in each hole, and the seedlings can be staggered and fixed according to the plant spacing of 10-12cm, and the lack of seedlings should be replanted in cloudy days, and thin human and animal dung water should be poured once after planting to facilitate survival. Two or three times of weeding were carried out at seedling height 3cm, 12-15cm and 21-24cm respectively before the first harvest. Seedling height 25-30cm after the second harvest, cultivate the soil and protect the root with 6cm.

two。 Diseases and insect pests: we should pay attention to the prevention and control of root rot, Fusarium wilt, corner spot, brown spot, aphids, red spiders and other diseases and insect pests, according to the actual growth situation, to use different pesticides.

The planting efficiency of patchouli is very high, tender stems and leaves can be eaten, above the roots can be used as medicine, but also can beautify the garden, is a very economic crop.