Basic information about sunflowers, all information about sunflowers

Sunflower is a plant of the family Asteraceae, the genus Sunflower. Its name is derived from the flower that moves with the sun. An annual herb that is up to 9 meters tall. The stems are erect, round and polygonal, stiffly covered with white coarse hairs.

Leaves broadly ovate, usually alternate, acutely or acutely acute, 3-veined at base, coarsely serrated margins, coarsely hairy on both sides, stalked. Inflorescence capitate, 10-30 cm in diameter.

The bracts are multi-layered, leaf-like, tile-like, covered with bristles, flowering in summer, with neutral yellow tongue-like flowers on the margins of the inflorescences, not bearing fruit. The middle of the inflorescence is bisexually cylindrical, brown or purple, and can be tolerated. The achenes are oblate and rounded, and the bark is woody, gray or black, and is called sunflower seeds.

The habitat of wild sunflowers is mainly grasslands and dry, open areas. They grow on roadsides, fields, desert edges, and meadows. Growing is best in sunny, humid or disturbed areas.

Native to South America, it was brought to Europe by the Spaniards from North America in 1510 and was originally used for ornamentation. At the end of the 19th century, it was brought back to North America from Russia. It is cultivated in all countries of the world and in China, and many varieties have been formed in different habitats through artificial cultivation of cherry blossoms, especially the size and color of flower heads and achenes, which are the best raw materials for comprehensive utilization.

The edible value of sunflower is as follows:

Sunflower sunflower seeds have a very high oil content, delicious taste, can be fried, can also be squeezed for oil, and are important oil crops. There are three types: edible type, oil type and combined use type. Receptacles, stalks, husks, can be used as industrial raw materials, etc.

Precautions for the maintenance of sunflowers:

1. Sunflower is deficient in nitrogen.

The growth of seedlings is not fast, the plants are slender and thin, the leaves are small and thin, yellow-green or light green; Nitrogen deficiency in the early middle stage of the growth nucleus, the early yellowing of the lower leaves, the small flower disc, and the obvious deterioration of the growth of vegetative organs, caused the premature senescence of the plant.

2. Sunflowers lack phosphorus.

Plants and flowers are underdeveloped.

3. Sunflower is deficient in potassium.

The plant grows slowly, the leaves turn yellow, and brown spots appear on the leaves, which eventually dry up and break off, and the oil content decreases.

4. Sunflower is deficient in calcium.

Stem bending occurs before and after flowering.

5. Sunflower is deficient in sulfur.

The leaves and inflorescences are pale in color, the internodes are short, and the plants are short.

6. Sunflower is deficient in magnesium.

Loss of green between the veins. 7. Sunflowers lack manganese.

The leaves are reticulated and lose green. <>

Sunflower is an annual herbaceous plant of the family Asteraceae and the genus Sunflower, also known as Sunflower, Sunflower, Sunflower, Sunflower, Sunflower, Sunflower, etc. The main feature of sunflowers is that the inflorescence rotates with the sun, which is where the name comes from. The stem of the sunflower flower is very erect, the shape of the leaves is heart-shaped oval or oval, the head inflorescence is relatively large, the tongue-shaped flowers are many, the color is yellow, and the fruit is the melon seeds that we often eat.

Wild sunflower habitats are mainly grasslands as well as dry, open areas. They grow along roadsides, fields, desert edges, and meadows. It grows best in sunny, humid or disturbed areas of the earth.

The varieties of sunflowers are:Teddy bear sunflower, sunspot sunflower, pachido sunflower, purple sunflower, colored sunflower, laughing sunflower, mini sunflower, edible sunflower t33.

Teddy bear sunflowers

Teddy bear sunflowers belong to a variety of potted ornamental sunflowers. Ornamental sunflower is also known as beautiful sunflower, is a plant of the genus Sunflower of the Asteraceae family, ornamental sunflower flowers are huge, bright and eye-catching, dense branches and leaves, and it is a novel potted ornamental plant. The history of ornamental sunflower cultivation is not long, but it has developed rapidly.

From the single-petaled sunflower, dwarf species, orange heavy braided species and branching small-flowered sunflowers were quickly bred.

Sunspots: Sunflowers

Sun-spotted sunflower is marginally curled, sessile, slightly coarse or pubescent. The inflorescences are very large, the flowers are 10-30 cm in diameter, solitary at the top of the stem, often sloping downward. The sunspot flower disc is greenish-brown, resembling a black flare of the sun.

Pachido sunflowers

At 50 cm tall, the Pachido sunflower has a dwarf habit and is tightly shaped to produce a large number of branches, and these lateral heads ensure that the plant forms a full, round ball. It takes only 60 days from sowing to flowering, and there are five flower colors: black heart, golden heart, lemon yellow, red, red and yellow.

Purple sunflowers

Purple sunflower is an annual herbaceous plant, and its plants are relatively tall, generally about 1 meter to 3 meters tall. Purple sunflowers generally bloom in July and can last for about three months.

Colored sunflowers

Colored sunflower, also known as colored sunflower, is a very common sunflower variety, its plant height is about meters, its flowers are tongue-like yellow petals with red, brown or purple patches in the middle, and the flowering period is from June to September.

Laughing sunflowers

Laughing sunflowers are double-petaled varieties. The taproot penetrates deep into the soil, and the lateral roots grow from the taproot and grow horizontally, and there are many fibrous roots on the lateral roots. The stems are round and erect. In the late growth stage, the stem is woody, and the inner medulla of the stem is hollow.

Mini sunflowers

Mini sunflower not only has relatively small flowers, but also its growth cycle is relatively short, it is a relatively fast-growing plant, it only takes about 70 days from sowing to flowering, and the flowering time of the blurry sunflower is relatively long, with extremely high ornamental value.

Edible sunflower t33

Edible sunflower is a plant of the order Platycodon, Asteraceae, and sunflower. It is named because the inflorescence rotates with the sun. Annual herb, tall rice, up to 9 meters tall. The stems are erect, rounded and angular, stiff and covered with coarse white bristles.

Sunflower varieties include golden sunflower, barchido sunflower, gorgeous sunflower, dwarf sunflower, and golden autumn sunflower.

1. Golden glow sunflower

This variety of sunflower looks very beautiful, with a golden flower head that attracts attention, a height of 160 cm, a crown width of 90 cm, a strong branching, and a very compact plant. The flowering is extremely luxuriant, with large, bright golden yellow flowers with a diameter of up to 15 cm. It takes only 60 days from sowing to flowering, making it an ideal cut flower variety for Kyochai and Kyochai .

2. Pacido sunflowers

Naturally dwarfed plants are ideal for container planting, with a height of only 50 cm, they are dwarf, compact and produce a large number of branches, and these lateral flower heads ensure that the plant forms a full ball. It takes only 60 days from sowing to flowering, and there are five flower colors: golden and black hearts, golden yellow hearts, lemon yellow, red, and red and yellow.

3. Gorgeous sunflowers

The petals have a round of red, which is different from the impression that the sunflower is yellow in the general population, and it is not easy to cultivate, it looks more like the fiery red sun, so it has a high ornamental value, although it is not suitable for breeding at home, but it is also a very good choice to breed this sunflower outdoors.

4. Dwarf sunflowers

Sunflowers introduced from abroad, suitable for planting in flower beds, generally 40 cm in height, 10 17 cm in diameter of flower disc, main stem flowering, strong adaptability, generally using seedling transplanting, seedling age call type 25-30 days, plant row spacing 40 60 cm, can also be potted ornamental, family indoor four seasons can be sown, can be planted in various places.

5. Golden autumn sunflowers

Golden Autumn is the only sunflower variety with a stunning geometric pattern in the heart, with a height of 70 cm and showy golden petals surrounding a fresh green heart, making it the perfect choice for a fresh-cut sunflower bouquet.