Black Heart Chrysanthemum, scientific name: RudbeckiahirtaL. Asteraceae, chamomile, biennial herb. The heart is swollen, purple-brown, and the surrounding petal-like florets are golden yellow. Native to eastern North America, not hardy, can be sown in the fall or overwintered in the open ground in southern central China. It has a long flowering period, from early summer to early frost, with bright colors, making it a good material for cut flowers.

Morphological characteristics

Daylily, Asteraceae, chamomile, biennial, plant height 60-100cm, flower head 8-9cm, heavy, yellow ligulate flowers, sometimes with tawny stripes, dark brown tubular flowers. Stem stout, hairy, slightly branched, winged. Alternate leaves scabrous, oblong to narrowly lanceolate, 10-15 cm long, leaf bases extending down to winged stems, pinnatifid, 5-7-lobed, stem leaves 3-5-lobed, margins remotely serrate.

The whole plant is covered, subrooted with leaves, upper leaves alternate, spatulate, broadly lanceolate, leaf margin coarsely toothed. Heads, ca. 2.5-5 cm in diameter, corymbose, peduncle short; ligulate flowers neutral, 1.5-2 cm long, yellow, maroon violet-red or with bicolored stripes; tubular flowers brown to purple, densely rounded; sown in spring and autumn, flowering period spanning summer to autumn, cold and drought-resistant, roughly managed, clumped and appressed, road landscaping, flower beds and borders, grassy margin planting. It can also be used as cut flowers, overwintering in the open ground, self-sowing.

Propagation Technology

Sowing and Breeding

Black chrysanthemums are usually sown in spring and fall. March and September are the best sowing times for natural growth. The sowing period is closely related to its natural flowering period, sowing in March in the spring, flowering in June-July, sowing in September in the fall, potting in November, flowering in the following spring. In order to ensure that its plants are robust and flowers are bright, after sowing, wait until the growth of 4-5 leaves when transplanted once. sowing in November. It can be wintered in the wild.

Division propagation

Can be done in spring and fall, old perennials are usually divided.

Plugs

New shoots sprouting from the roots are usually chosen as plugs, either in spring or fall. It should be done in the spring when the germination is about 15 cm, and in the fall when the inter-root germination after flowering.

Variety Classification

Maya Series:The plant is 45-50cm tall, and is the world's first dwarf star double-petal dense black heart. Full, heavy flowers enrich the summer and fall displays, with sturdy stalks and 9-12cm flower diameter. The bright yellow flowers are straight and open. Planted in clusters like a brightly colored tennis court, Maya's excellent outdoor performance earns it a gold medal. Maya can also be arranged as a main flower in large pots or in mixed plants in garden applications.

The Dodo series:30-38cm tall, extremely compact, well-branched and early flowering, ideal for 10-12cm pots. Dodo Golden Yellow, Dodo Lemon Yellow and Dodo Dark Red have all won all the European awards for their beautiful image and rich, long-lasting flowers in summer and fall.The beautiful round flowers of 5-7cm will perform well wherever they are grown. The three individual colors are evenly distributed in the multicolor mix. In landscape applications, Dodo is an excellent choice for area planting, combination potting, and garden planting.

Oboe Series:Plants are 45-50 cm tall and uniquely colored with a huge maroon wreath of bright gold petals. The flowers are huge and 12-15cm in diameter.Due to its unique color, Zona has become an influential variety in the retail market and is fast becoming a winner for garden planting.

Kodo Series:Plants are 45-50cm tall, branching like the Dodo series. Brilliantly colored with red wreaths on golden petals. Attractive in garden planting due to its good branching habit and multi-flowering.

Golden Sun Series:Plant height 70-80cm, huge flower shape, golden petals with yellowish tips and green flower center. Unique color and strong growth habit are excellent in any park planting.

Autumn Color Series:Plant height 50-60cm, flower diameter 12cm.It has bright autumn colors: copper petals, red wreaths, rusty red flower centers and so on. Contrasts sharply with other yellow and black chrysanthemum strains. Ideal for classical flower beds. In garden applications, it can be mixed withoth

Golden Lock Series:The height of the plant is 60-70cm, the diameter of the orange flower is 10cm, full heavy petal.

Daisy Series:Plant height 75cm, flower diameter 12-15cm, a heavy petal gold flower, with daisy-like pattern.

Main value

Flowering lush, suitable for garden arrangement, flower border material, or arrangement of natural planting at the edge of the grass.

New strains of chrysanthemums are European award-winning varieties, winning AASWinner and FleuroselectAwards.These strains can provide variety and offer customers a wide range of excellent choices as windowsill plants, park pots, area plants or background plants, as main flowers or in mass concentrations. They have the following outstanding advantages:

Together with the bright colors, they greatly enhance the appealing appearance.

2. They last for a very long time, increasing sales opportunities.

Garden is an award-winning European variety recognized for its excellent characteristics.

4. Wide range of growth habit and flower shape options with potential for wide application.

5. Heat-resistant and durable, improving consumer satisfaction.