Culture methods and matters needing attention of potted mint

Planting time: potted mint is usually planted from March to April in spring or from September to October in autumn. Soil requirements: it is better to plant in sandy soil. Growth temperature: it can survive at a low temperature of minus 15 ℃. Lighting requirements: like the sun, can be full-time sunshine. Note: during the growth period, nitrogen fertilizer is applied once a month, with phosphorus and potassium fertilizer, the water demand is larger in the early and middle stages of growth, water is watered every half a month, stop watering before harvest, cut off the old seedlings regularly, and the basin soil is changed every spring.

I. Culture methods of potted mint

1. Planting time

Seed propagation: seeds can generally be sown in March-April in spring or September-October in autumn.

Rhizome propagation: planted from the end of March to the beginning of April in spring or around the end of October before winter.

2. Soil requirements

Peppermint does not have high requirements for soil, and most soils can be planted. Except for over-sand, over-viscosity, heavy acidity and low-lying soil with poor drainage, it is generally best to be planted in sandy soil, and the pH value of soil suitable for planting is about 6-7.5.

3. Growth environment

Peppermint has a strong ability to adapt to the environment, generally growing in areas below 2100 meters above sea level, such as growing waterside tidal wetlands, growth can be as high as 3500 meters above sea level.

4. Growth temperature

Peppermint also has a strong ability to adapt to temperature, and can survive at a low temperature of minus 15 ℃, and the growth rate is relatively slow. The best growth temperature is 25-30 ℃. At this time, reasonable water and fertilizer is beneficial to accelerate its growth rate.

5. Lighting demand

Peppermint likes sunlight and is a kind of crop with long sunshine.

Matters needing attention in culturing peppermint

1. Fertilization: peppermint likes fertilizer, which needs to be applied once a month during the growing period, mainly nitrogen fertilizer, together with phosphorus and potassium fertilizer, branches and leaves need to be harvested during the growing period, in order to promote the plant to restore good plant shape, topdressing should be carried out in time after harvest.

2. Rational watering: mint needs a lot of water in the early, middle and early growth stages, watering every half a month, 4-5 times from seedling emergence to harvest, and a small amount of water after sealing, so as to prevent stems and leaves from growing and causing lodging leaves to fall off. Stop watering about 20-25 days before harvest. Proper watering is needed in winter. Amoy rice water can be used to irrigate, which is more beneficial to the growth of mint.

3. Reasonable pruning: mint needs to be pruned regularly to cut off the old seedlings without fragrance.

4, change the basin soil: generally change the basin soil in spring every year, you can separate many plants, usually you must ensure that the basin soil is moist.

Prevention and control of diseases

1. Black shank disease: it often occurs at the seedling stage, and the symptom stem base blackens and rots, resulting in plant wilting and lodging, which can be prevented by spraying chlorothalonil or carbendazim with water.

2. Spot blight: it usually occurs from May to October. At the initial stage of the disease, 65 {bf} Dysen zinc can be sprayed once a week.

3. Rust: it often occurs from May to July. 25 {bf} 1000-1500 times solution of strychnine can be used for leaf spray.