How orchids are vernalized in the south

Wen: Feng Chu

Spring and Hui need vernalization to blossom, and whether vernalization is sufficient or not determines the flowers.

The key point of vernalization is to stop the growth of orchids and change their nutritional metabolism to reproductive metabolism. That is, the orchid seedlings stop growing and supply nutrients on the buds.

The ways of vernalization include low temperature, increasing temperature difference and reducing light.

The low temperature in the north can be achieved by "low temperature + increasing temperature difference".

For the air temperature in the south, the vernalization of Cymbidium is mainly realized by "low temperature + reduced light".

Reducing the light, especially at noon, can effectively avoid heating and inhibit the growth of orchids.

The specific means of vernalization include climbing the mountain, pulling the double-layer sunshade net and putting the outdoor windowsill to the north.

The mountains above 500-800 meters can achieve full vernalization of light, and those with low elevations should appropriately reduce the light and put it in the shade to meet the north wind.

For those planted in the greenhouse, it will be more convenient to pull the double-layer sunshade net, pay attention to remove the roof and the surrounding film.

In general, cymbidium which needs vernalization can be placed on the north open windowsill, with only a short period of sun in the morning and evening, similar to the summer vacation of Orchid friends in the north.

When the temperature drops, you can increase some light appropriately, and if the temperature is too high, it will increase the shade. Take your time and feel your way.

The vernalization time of Cymbidium is relatively long, usually from March to May, the longer the time, the better the flowers.

Combined with the phenology of the middle and lower reaches of the Yangtze River, vernalization usually takes place in late October, increasing temperature and blooming between Spring Festival and April as needed.

In the past two years, there has been a lot of experience of normal blooming of Cymbidium in Fujian, Guangxi and Yunnan, and there is even a large area of normal blooming in an orchid garden, which is undoubtedly good news for southern orchid friends and Cymbidium.

Experience still needs to be explored and summed up a little bit. Yilan is always on the road.

These experiences and summaries come from the unremitting efforts and exploration of orchid friends in the south, and can also be used for reference to orchid cultivation on the balcony and orchid friends in the northern heating area, so they are shared with orchid friends.