When do jacarandas bloom?
Let me share with everyone the knowledge about when jacarandas bloom and a brief introduction to the flowering period of jacarandas. Next, the editor will introduce this.
Recently, a cluster of blue-violet bell-shaped flowers were photographed in Wuhan Botanical Garden, standing out among many pink and white flowers. Dong Likun, a senior engineer at the Wuhan Botanical Garden Research Institute, identified the photo and said that these are jacarandas, which are listed in the IUCN Red List of Endangered Species and are native to South America. It was previously unknown that the jacarandas introduced in Wuhan bloom in autumn.
On November 4th, a jacaranda in Wuhan Botanical Garden bore a cluster of purple flowers. Photo by Li Yonggang, a journalist.
On the 4th, a journalist from the Yangtze River Daily found this blooming jacaranda at the eastern end of the Creative Garden in Wuhan Botanical Garden. The tree is about 3.5 meters tall with a slender trunk, and more than 10 branches at the top, four of which have more than 10 blue-purple flowers, while the other branches have buds waiting to bloom.
The fallen flowers of the jacaranda are very similar in shape and size to Paulownia flowers, but they are purple in color. Photo by Li Yonggang, a journalist.
"Jacarandas have a good landscaping effect, but they require specific growing conditions. Wuhan has a subtropical climate, which is not conducive to the growth and flowering of this species," Zhang Wenhua, the head of greening at Wuhan Botanical Garden, introduced. Jacarandas prefer a warm and humid environment with plenty of sunlight, and the optimal growing temperature is between 22 to 30 degrees Celsius, especially not tolerate frost and snow. The average temperature in Wuhan in summer is above 33 degrees, and in winter it is around 0 degrees, which inhibits the growth of jacarandas and makes flowering very unlikely.
The leaves of jacarandas are very similar to those of common silk trees. Photo by Li Yonggang, a journalist.
In 2020, the garden specially introduced 50 jacaranda seeds from Australia for the exploration of new tree species for landscaping, and after 5 months, the seedlings grew to 40 cm tall. In winter, they were moved into a greenhouse for warming and antifreeze treatment. Last winter, the garden workers placed several potted jacarandas outdoors, wrapped them with plastic film for warmth, and carefully nurtured them. Unexpectedly, one of them bloomed in the golden autumn. It is rare for trees to bloom in blue, so the blooming of this jacaranda is quite special.
When do jacarandas bloom?
The maintenance staff are loosening the soil for the potted jacarandas. Photo by Li Yonggang, a journalist.
Dong Likun introduced that jacarandas are listed as vulnerable species by the IUCN Red List of Endangered Species. In addition to the native country Brazil, they are also introduced and cultivated in Guangdong, Hainan, Guangxi, Fujian, and Yunnan in China, especially in Kunming as street trees. Every spring and summer, the blooming of a large area of jacarandas looks like a blue mist, which is very spectacular and beautiful. There are few jacarandas planted in Wuhan, and he had never heard of jacarandas blooming in Wuhan before. Generally, plants need a certain amount of heat accumulation to bloom, and since Wuhan warms up later than southern cities, the accumulated temperature in spring and summer is not enough for jacarandas to bloom, so the jacarandas in Wuhan Botanical Garden bloom in autumn.
The blooming jacaranda is about 3 meters tall, with flowers at the very top.
The detailed explanation above about when jacarandas bloom and a brief introduction to the flowering period of jacarandas is for everyone's reference only!