Orchids, outdoor 25-34℃, indoor 30℃ without temperature difference, where is better?

Orchid breeding is actually very simple, and we often complicate it artificially, which leads to problems of orchids, mainly because we don't understand the growth habits of orchids. Orchids are terrestrial herbs, which grow on cool, ventilated and stagnant hillsides and like warm and humid environment. Because they adapt to the semi-cloudy and semi-sunny environment, they can be planted indoors for us to watch and smell. In order to raise orchids well, we need to know their temperature and fragrance.

First, the temperature requirements of orchids

The suitable temperature for orchid growth is between 20-30℃, and the optimum growth temperature is about 26-28℃. Pay attention to shading and cooling in summer, and keep warm and freeze-proof in winter. Potted orchids and ground orchids have different requirements for low temperature. Some orchids planted on the ground can withstand the low temperature of MINUS 10 degrees, because the ground temperature and fallen leaves are warm and then adjusted. Potted orchids lack these factors. When the temperature is lower than 0℃, they should be advanced.

In summer, try to control the temperature of the place where the orchids are placed within 32℃. If it exceeds 35℃, it will be forced to cool down, so that there is a high temperature and high humidity environment in the pot, otherwise the orchids will easily get sick. If the temperature cannot be controlled within 32℃, it is necessary to strengthen ventilation and reduce the chance of getting sick. Good ventilation can accelerate the evaporation of water in the pot and reduce the number of harmful bacteria.

Second, the humidity requirements of orchids

The suitable humidity for orchid growth is between 40% and 80%, and the optimum humidity is between 50% and 70%. When the humidity is higher than 80%, it is also prone to high temperature and humidity, which makes orchids easy to get sick. When the humidity is lower than 40%, the buds of orchids are easy to dehydrate and harden, stop growing, and even shrink and wither.

Orchids should avoid over-drying, and watering times should be flexibly controlled according to planting materials, ventilation and weather conditions. The general principle is to keep the basin moist, but not moist or slightly moist. Do not let the basin accumulate water or stay in a state of high water content for a long time, which will easily lead to root rot of orchid.

Third, the light requirements of orchids.

Orchids need sunlight for photosynthesis to accumulate dry matter and maintain the normal growth of orchids. Light is the nutrient source for flower bud differentiation and growth of orchids. The optimal light duration for orchid growth is 14- 16 hours, and the light intensity suitable for orchid growth is between 5000- 15000 lux. When the light intensity is lower than 3000 lux, orchids can't carry out normal photosynthesis, can't differentiate flower buds, have thin and weak leaves, and grow poorly, and chlorophyll disappears.