Tansy is a highly destructive and invasive weed. Due to its wide adaptability, strong competitiveness, and fast spread, tansy is widely distributed in China. Moreover, tansy pollen is highly toxic and poses great harm to human health. Let's learn about the growth habits of tansy!
1. Strong regenerative ability
Tansy can grow new roots from its stems, nodes, branches, and roots. It can form new plants through cutting and layering. Even after being removed or cut, the remaining above-ground residues can quickly regenerate. The germination period varies, overlapping and uneven.
The emergence period lasts from mid to late March and can continue until late November, lasting for 7 months. Early and late maturing tansy have a difference in growth period of more than one month. This is the direct reason for the uneven and overlapping growth period.
2. Likes moisture and dislikes drought
Tansy is a shallow-rooted plant that cannot absorb water from deep layers of soil. It commonly withers and wilts during the dry season in late autumn. Tansy growing in damp places thrives and has stronger cold resistance.
Mature tansy can withstand temperatures of -3 to -5 degrees Celsius, becoming perennial tansy. It grows densely in patches. Since tansy fruits generally scatter within a radius of 1-1.5 meters around the plants, this happens year after year, resulting in the dense growth of tansy patches.
3. Flowering habit
The male flowers have a habit of blooming every other day. They bloom from 6 to 10 a.m., emit pollen and pollinate from 7 to 11 a.m., and close after 11 a.m. If it encounters cloudy or rainy weather, it will not bloom. After the weather clears, it can continue to bloom for 2-3 days and then resume the habit of blooming every other day.
Each male flower cluster only blooms 2-5 small flowers at a time, a total of 2-4 times. The main reason why male flowers do not bloom during rainy days is due to the high humidity in the air. Therefore, spraying water on the male flowers in the early morning of sunny days or soaking them in water can completely inhibit the blooming and pollen release of male flowers on that day.
4. Fruit ripening period
The time when the fruits mature in large quantities is in early to mid-October, with a ripening period of about 20 days. The ripening pattern of the fruits is the same as the formation pattern of the flowers, from top to bottom, from the outside to the inside.
The seed yield of tansy is closely related to environmental conditions. However, the average seed yield per plant is usually 800-1200 seeds, reaching up to 15,000-30,000 seeds, with some plants having less than 500 seeds.
