In shanghai in the early summer, a large number of visitors from the public expressed the beauty of the recent hf encounter with lavender in the park。
But botanicalists look at the web-based photo video and say that this is a “pretty misunderstanding” and that these “lave herbs” are, in fact, vervain。
Willow vervain, a multi-year vervain plant of vervain origin in south america, has the advantage of being somewhat similar to lavender and having long bouquets that can easily be matched with other flowers, and has been referred to in recent years by many netizens as “the lavender replacement”。
A presentation by a horticultural expert at the green forest park identified four techniques for identifying vervain and lavender。
The first is to see the height of the plant. The vervain plant is typically 1 to 1. 5 metres high, while lavender usually does not exceed 50 cm。
Second, look at the color. The purple lavender is more pink than lavender。
Third is the sequence. The vervain line of the willows has visible branches, the small flowers have split into five petals, while the vermin of the lavenders are not, and the crowns are of a variety of lips。
The fourth is where we meet. Lavender plants are produced in the dry and dry mediterranean coastal areas of china in the middle of the winter, and in the south and east regions of china in the middle of the summer. Thus, it is more likely to be vervain vervain if the vervain vervain is met in the outskirts of shanghai。
Image from sinoyama botanical garden
At present, a certain scale of vervain has been planted in green areas such as chongqing forest park, shangshan botanical garden, shanghai rim forest park, century park, garbei suburban park and bong hyun shanghai fish. The purple sea is particularly suitable for summer, giving people a fresh and romantic feeling。
In addition to the high “carrying”, the relatively low cost of conservation and the longer “stand-by” capacity of vervain willows are the main reasons for their re-use in the greening of urban landscapes in recent years and, if properly maintained, willow vervain can bloom many times each year between may and october. At present, the vervain of the willows in shanghai is at its best。
Image from green forest park
Image from green forest park
Image from shanghaiside forest park
A study conducted in the area of vervain cultivation in the four fest mountain landscape of jiamuz, heilongjiang province, found that vervain may also have a value in promoting biodiversity, with locally observed vervain. The relationship between grass-spam insects, which have 18 species in 4 and 7, with an advantage of chinese bees, needs further study。
However, the widespread cultivation of vervain in china as an alien species has raised concerns among some scholars. According to an article published last year by wang lai lok of the school of life sciences of nanjing agricultural university, the risk of invasion of willow vervain, which was introduced into china in 1893, was considered to be high on the basis of an assessment of the risk of invasion based on three invasive plant risk assessment systems, and should be monitored and managed to prevent a vicious invasion of weeds that became uncontrollable as a yellow flower in canada。
