Which flowers are cold-hardy outdoors in winter and also need vernalization?
Before we know it, it is the end of the year, and the weather is getting colder and colder. In some northern regions, temperatures have even dropped to more than ten degrees below zero these past few days, and people have already put on their winter clothes. At this time, potted flowers and plants are generally best moved indoors for care. But there are a few kinds of flowers that should not be rushed back indoors; you can let them stay outside in the cold. Only in this way will they produce more flower buds during the Chinese New Year.
Peony
The peony's flower colors are extremely brilliant, and its flower shape is full and large; it is a born center-stage star. In winter care, what makes it different from other flowers is that it likes a cool climate. In winter, you must be ruthless and let it go through low-temperature vernalization so that it can sprout, grow, and bloom better the following year.
Tulip
As the national flower of the Netherlands, the tulip's posture is often used in movie scenes, and after it blooms it also has a light fragrance. As a bulb flower, Dutch varieties can easily be bought on the market, so its cold hardiness is very good, and it can withstand low temperatures of around minus 30 degrees at the lowest. At this time in winter, as long as the bulbs are placed in an environment below 0 degrees for about 1 month of low temperature, they can bloom very beautiful flowers the following spring.
Camellia
The fragrance of the camellia can be called famous, and poetry even describes it as "as if with heavy makeup emerging from crimson gauze, a streak of moving light reflects the morning glow. How much spring does its drifting fragrance and sent beauty bring, like a truly red long-lasting flower." As one of the few flowers that bloom in winter, it needs to undergo vernalization during low temperatures, because it takes a very long time to form flower buds. If it is not allowed to get cold at this time, the flower buds will grow slowly the following year.
Orchid
Among orchid varieties, there are several major groups such as Cymbidium goeringii, Cymbidium faberi, and Cymbidium sinense. Most of them need indoor care after winter begins. However, on relatively cold daytime days from December to January, you can let them stay outside in the cold. This can concentrate more nutrients on growing flower buds, and by the Spring Festival they can bloom into high-quality flowers.
In addition, different orchid varieties have different vernalization temperature requirements. For example, Cymbidium faberi varieties need temperatures of 0 to 10 degrees; Cymbidium sinense varieties need temperatures of 5 to 10 degrees.