The propagation methods of black-eyed Susan
This article elaborates on the experience of propagating black-eyed Susan flowers for netizens. If there are any mistakes, please feel free to correct them! Black-eyed Susan is a biennial herbaceous plant of the asteraceae family, with golden yellow petals surrounding a purple-brown convex center. The blooming period is from early summer to frost. Cultivated varieties have flowers in bronze and chestnut brown, as well as double and semi-double types. The flower center has olive green "Irish Eyes" and tetraploids with an inflorescence diameter of up to 15 cm, with flower colors ranging from yellow to red and bicolor. It is native to the eastern United States. It is not very cold-resistant, and it can be sown in autumn in Central China, and overwinter in the open. It can also be used as a cut flower.
There are three common propagation methods for black-eyed Susan:
Seed propagation
The sowing time of black-eyed Susan is generally in spring and autumn. March in spring and September in autumn are the best natural growth times for sowing. The sowing time is closely related to its natural blooming period. Sowing in March, the flowers bloom from June to July, sowing in September, the plants are transplanted in November, and they bloom in the following spring (May to June). To ensure strong plants and bright flowers, the plants should be transplanted once when they have 4 to 5 leaves after sowing. They can be planted in November and can overwinter in the open.
Cutting propagation
Usually, new buds from the roots are chosen as cuttings, and this can be done in spring or autumn. In spring, it should be done when the sprouts have grown to about 15 cm, and in autumn, it is done after the roots sprout after flowering.
Division propagation
Division can be done in both spring and autumn, usually for perennial old plants. It is generally divided every 3 years, usually in April to May, when the old plants cultivated in the greenhouse are dug up and cut into sections, each with 4 to 5 leaves, and then replanted.
Black-eyed Susan prefers a sunny and ventilated growing environment, is cold and drought resistant, and not particular about soil. The management is relatively relaxed. It is mostly planted in the ground and is suitable for sandy loam soil. It is not strict about water and fertilizer. When the plants are growing well, they can be given nitrogen, phosphorus, and potassium fertilizer to make the flowers more beautiful. There should be sufficient sunlight during the growing period. Especially for cut flower plants, the pinching method can be used to extend the blooming period. For perennial plants, forced division should be done, otherwise, it will weaken the growth and affect flowering.
The above is a specific introduction to the propagation methods of black-eyed Susan, hoping to bring some flower knowledge to flower enthusiasts.