Ornamental and cultivation of Jinguang Chrysanthemum

[Latin name]: Rudbeckialaciniata

[families and genera]: Compositae, Chrysanthemum

[alias]: smelly chrysanthemum

[Origin]: Canada and the United States

Morphological characteristics

It is a perennial herbaceous flower plant. Generally for 1-2-year-old cultivation, the branches and leaves are rough, the ground plants can be up to 1Mel 2m high, the potted plants are dwarfed to 20Mel 30cm, and the leaves are much branched, the leaves are broad and thick, the basal leaves are strong and split 5Mel, the cauline leaves are 5-lobed, the margin is densely serrated, the head is born on the main pole, and the ligulate flowers are in a single whorl, that is, there are inverted lanceolate and drooping petals, and there are also warped petals. The petals are about 3 cm long, and the flower spread is 3 mi 7 cm. The colors are: tangerine, crimson, pink, water red and so on. The flowering period is from May to October, and it is longer in the south. In addition, there is a double golden chrysanthemum.

Growth habit

Jinguang Chrysanthemum prefers a well-ventilated and sunny environment. Strong adaptability, cold and drought tolerance. The requirement of soil is not strict, but avoid dampness. It grows well in sandy soil with good drainage and loose soil. Although it is a herbaceous plant, but also has the characteristics of woody plants, the stem is hard and not easy to lodge, but also has disease resistance, insect resistance and other characteristics. Therefore, it is very easy to cultivate, and it is not sensitive to sunlight, no matter in the sunny zone or in the environment with weak sunlight, it does not affect the bright effect of flowers, and it can be ramified or seed propagated in spring and autumn.

Main varieties

Golden chrysanthemum R laciniata perennial herbs, high 60~25Ocm, with branches, glabrous or slightly hispidulous. Leaves are broad, basal leaves pinnately 5-7-lobed, cauline leaves 3-5-lobed. Inflorescences one to several borne on long stalks, involucral bracts sparse, leaflike, about lOcm in diameter, ligulate flowers 6-10, oblanceolate and drooping, 25-3 8cm long, golden yellow, tubular flowers yellowish green, florescence 7-9 months. Originally from Canada and the United States.

Roserotina, perennial herb with cold tolerance, 30-gOcm high, slightly branched in lower part, the whole plant is hirsute. Leaves alternate, lower leaves nearly spatulate, petiole winged, upper leaves long elliptic to lanceolate, entire, sessile. The head is solitary at the top of the stem, 14 ligulate flowers about 8~lOcm in diameter, golden yellow, 25-5cm long, the stem is dark, the tubular flowers change from purple-black to dark brown, and the florescence is from July to October.

Ornamental use

Jinguang Chrysanthemum has large plant type, various flowers in full bloom, colorful, colorful and dazzling, and the flowering and viewing period is long and the deciduous period is short, which can form a gorgeous flower landscape as long as half a year, so it is suitable for parks, institutions, schools, courtyards and other places to decorate, and can also be used as flower beds, flower border materials, cut flowers, vases, and natural planting at the edge of the lawn.

Culture and reproduction

Sowing or ramet propagation can be used, but the ramet method is usually used, especially double-petal varieties. Sowing can be carried out in spring and autumn, but it is better to sow in autumn. The seedlings can emerge about 2 weeks after sowing, can be transferred in about 3 weeks, and blossom in the following year. Ramet propagation should be carried out in early spring. After digging up the underground persistent root, the ramet should have more than 3 sprouts. Sowing seedlings and ramet seedlings should be planted in soil with basic fertilizer, good drainage and loose soil, irrigated with water after planting, properly shaded according to light intensity, and removed after living trees. no, no, no. Because the plants of Jinguang chrysanthemum are slender, it is necessary to properly control watering during the growing period, restrain height growth, so as to avoid lodging, and apply liquid fertilizer twice at the same time. When the plant grows to more than 1 meter, it is necessary to set up a bracket in time to prevent the planting strip from being broken by the wind. In order to promote the growth of lateral branches and prolong the flowering period, the residual flowers should be cut off in time after the first flower fade.