Detailed explanation of plant characteristics and ecological characteristics of canna

Labellum lanceolate, curved; capsule, long ovate, green, flowering and fruiting from 3 to 12 months. Let's take a look at the plant and ecological characteristics of canna.

Detailed explanation of plant characteristics and ecological characteristics of canna

Canna is a perennial erect herb of the family Canna. Also known as Hong Yan Banana, Tan Hua, Lanjiao, Dwarf Beauty. It is native to tropical America and Africa.

It has stout fleshy rhizomes, alternate leaves and broad leaves. The sepal-shaped, showy petals are actually petalized stamens, racemes, and petals are yellow, red and spotted according to the variety. The seeds are large, dark brown and the seed coat is hard. The florescence blooms one after another from early summer to late autumn.

There are bright red, pink, orange, purple, milky white, purple and red and yellow alternating, red petal Phnom Penh and so on. The flowering period is from May to July and blossoms continuously. Among them, the big safflower canna is the most beautiful, called "Hongjiao", so it is called canna. Sex like warm and humid, afraid of cold, like sufficient sunshine, like deep soil layer and fertile soil, can endure barren, root and bud meristematic ability, rapid reproduction, long florescence, is a good ground cover plant, but also can be used as flower bed, flower diameter, flower scene material.

Morphological characteristics

Canna (C.indica) underground rhizome recumbent growth, fleshy hypertrophy, rich in starch, multi-branched, have obvious nodes, the ability of lateral bud germination is strong. The plant is about 1 or 2 meters high, the stem and leaves are green, the leaves are long and oval, 10-30 meters long and 5-15 meters wide, the inflorescences are small and sparse, the florets are often 2, the petals are narrow, erect, bright red, and the lips are orange with red spots. Simple leaves alternate, leaves large, long oval, with obvious veins. Large red or yellow flowers throughout the year, flowers bisexual, terminal spikes or racemes or narrow panicles, flowers large, 10-12 cm in diam., flowers with 3 sepals, small and green; petals 3, usually narrow and pointed similar to sepals, petals connected with sepals; staminodes petal-like, usually 2-3, the largest one becomes lip, the other 1-2 narrow and revolute, only one side has developed anthers. Pistil tube connate. The flowers are rich in color, including white, yellow, orange, pink and bright red. Purplish red or complex color. Racemes terminal, often covered with waxy powdery, each flower with 1 ovate bract ca. 1.2cm; sepals 3, lanceolate, light green; Corolla tubular, 3-lobed, green or red; stamens 5, petal-shaped bright red, yellow, milky yellow, variegated; one with anthers, outermost 3 staminodes, oblanceolate, larger than Corolla, another large, reflexed into labellum, entire. Capsule green, long ovate, with soft spines, 1. 2-1.8cm long.

Physiological characteristics

Like warmth and plenty of sunshine, not resistant to cold. The soil is required to be deep and fertile, and potted plants are required to have loose soil and good drainage. Fertilizers are often applied during the growing season. In the north, the underground tubers should be dug up before frost and stored in an environment with a temperature of about 5 ℃. Because of its large and colorful flowers, rich colors, good plant shape, easy cultivation. The optimum temperature for open field cultivation is 13-17 ℃. It is not strict with the soil, and it grows best in the loose and fertile sandy soil with good drainage, and it is also suitable for the growth of fertile clayey soil. The south of the Yangtze River can spend the winter in the open field in the windbreak. Branch propagation or sowing reproduction. Ramet propagation was carried out when the bud eyes began to sprout from April to May, and each rhizome was cut and planted with 2-3 buds.

Generally, to the south of the Yangtze River basin, the open field can survive the winter safely with a little cover; to the north of the Yangtze River, the stems and leaves in early winter will wither after frost, so before and after Frosts Descent, the stems and leaves on the ground should be cut off, the roots should be dug up and dried for 2-3 days, and the surface moisture should be removed, laid indoors, covered with river sand or fine mud, and kept above 8 ℃ at room temperature to be planted after the final frost in the following spring. Canna likes to be moist and avoid dryness. in hot summer, if it is hit by the hot sun or the dry and hot wind, the leaf edge will scorch; the same phenomenon will occur when watering is too cool.

Human banana family perennial herbs, underground with stout fleshy rhizomes, underground stems erect unbranched. The leaves are alternate, the leaf blade is broad and the petiole is sheathlike. Dichotomous Cymes, involucral bracts are broad leaf-shaped; pistils and stamens are petalized, and the petal of one stamen is often rolled downward, called labellum. Capsule globose, seeds dark brown. Florescence, summer and autumn. It is native to America. Like warm, hot, sunny environment, with a certain degree of cold resistance, the northern part of the ground withered in winter. Require thick, well-drained soil, but also resistant to barren and short-term stagnant water.

Perennial perennial herbaceous flowers. The plant height can reach 100-150 cm, the rhizome is fat, and the aboveground stem is fleshy and unbranched. Stems and leaves are powdery, leaves alternate, broad, long elliptic-lanceolate. Wide oval. Racemes drawn from the top of the stem, flowers up to 20 meters in diameter, petals extended, with four petalized stamens. There are more than 50 varieties of flowers, such as milky white, bright yellow, orange, orange, pink, bright red, purple, complex spots and so on. Flowering in the north from June to October (north); in the south all the year round.

Also resistant to barren and short-term stagnant water.

Perennial perennial herbaceous flowers. The plant height can reach 100-150 cm, the rhizome is fat, and the aboveground stem is fleshy and unbranched. Stems and leaves are powdery, leaves alternate, broad, long elliptic-lanceolate. Wide oval. Racemes drawn from the top of the stem, flowers up to 20 meters in diameter, petals extended, with four petalized stamens. There are more than 50 varieties of flowers, such as milky white, bright yellow, orange, orange, pink, bright red, purple, complex spots and so on. Flowering in the north from June to October (north); in the south all the year round.