How to grow orchid sage?

Orchid sage is a perennial herb of the genus Salvia of Labiatae, but it is cultivated for more than one year, with terminal verticillum, pink blue or pink purple flowers, flowering from spring to summer, garden used in flower beds, flower borders, from planting, cut flowers, potted flower cultivation, has a high ornamental value, let's take a look at how to grow orchid sage!

Growth habits of Orchid sage

Sage likes warm, moist and sunny environment, has strong cold tolerance, and is afraid of heat and dryness. It is suitable to grow in loose, fertile and well-drained sandy soil. The optimum temperature for growth is 18-23 ℃, flowering at 70-100 days after sowing, soil temperature 20-23 ℃, seed germination days 5-8 days, soil pH 5.5-5.8, it is very important to keep the leaf surface dry and prevent diseases.

Sowing and raising seedlings of Orchid sage

Orchid sage is usually propagated by sowing, which is suitable for sowing in spring and summer, and can also be sowed at any time according to needs. The best substrate is peat and perlite, or rotten leaf soil. The culture soil is screened and placed in the seedling plate, soaked with 500-600-fold carbendazim solution, slightly dried and sowed, about 1000 grains per square meter. After sowing, the seedlings need to be planted for 1 or 2 times, and the seedlings can be planted when the height of the seedlings is 15 cm.

Planting management of orchid sage

1, transplanting on the pot: when the true leaves of Orchid sage reach 2 to 3 pieces, they begin to transplant on the pot, generally choose a nutrition bowl of 12 cm to 13 cm for transplanting, and the matrix chooses loose and ventilated garden soil plus organic fertilizer and compound fertilizer. When 4 pairs of true leaves were produced in the coring treatment, 2 pairs of true leaves were left to promote lateral branches.

2. Temperature management: the temperature of orchid sage dropped to 18 ℃ after potting, and decreased to 15 ℃ in a month. If the temperature is below 15 ℃, the leaves will turn yellow or fall off, and when the temperature is above 30 ℃, the flowers and leaves will be small and the plants will stop growing.

3. Fertilization management: 1500 times diluted ammonium sulfate was applied during the growing period of Orchid sage to change the leaf color, and the effect was better. Do not apply urea at low temperature. In order to make the plant have strong root system and luxuriant branches and leaves, it is very important to apply fertilizer continuously. The compound fertilizer 100ppm containing calcium and magnesium is applied once a month, and phosphorus and potassium fertilizer is applied once before flowering.

4. light management: orchid sage likes the environment with plenty of sunshine, needs proper shading in hot summer, and strengthens the light to prevent overgrowth in seedling stage.

5. pest control: the common pests of orchid sage are whitefly, aphids and so on, which need to be actively controlled. Common diseases are downy mildew, leaf spot and so on. When the disease occurs, it can be sprayed with 50% topiramine wettable powder 500 times to control.