What is the role of zinnias How to breed zinnias

Zinnia has a high ornamental value1. Temperature requirementsZinnia prefers a warm environment and is generally suitable for growing around 15-23, with early summer being the peak growth period. <>

2. Lighting requirementsThe duration of sunlight is related to the growth of zinnia in the later stages, and the stems of plants with less than 10 hours of sunlight are more fragile, so they are more prone to disease. <>

3. Moisture requirementsThe sunshine time requirement is relatively long, so the water requirement is also very high, basically every day to water, summer flowers to keep the soil moist. In this way, a good flowering can be guaranteed. <>

Zinnia planting is mainly based on seed propagation, and the soil and seeds need to be disinfected before sowing to reduce the damage of diseases and pests during the growth period. And use the new high-fat film for seed dressing, which can keep warm, moisturize, absorb swell, improve the germination rate of seeds, isolate virus infection, and make the seedlings robust.

After planting, fertilization does not have to be too frequent during the seedling period, and liquid fertilizer is generally applied once a month. Near the flowering period, more topdressing can be applied and sprayed before the flowering, flower bud stage and flowering period of zinnia to improve the plant's ability to absorb water and fertilizer, and promote the zinnia flower buds to be strong, the flower color is gorgeous, and the flowering period is extended.

Proper topping treatment of zinnia can promote plant dwarfing and flower increase. When the seedlings are up to 10 cm, leave 2 pairs of leaves, stop the topping, and promote their germination of side branches. When the side branches grow to 2 or 3 pairs of leaves, leave 2 pairs of leaves and pluck the top a second time.

It can effectively promote the growth of zinnia plants and the flowering of many flowers. After the flowers wither, the dead flower heads should be cut off in time to reduce the loss of nutrients.

1. Breeding methods

The best time to sow zinnia seeds is in April and May, this time period is warm, very suitable for planting this flower, generally speaking, it can be sown in spring and early autumn, suitable for seed germination and growth, summer hot weather and winter cold season are not suitable for planting. <>

2. Seed selection and treatment

To plant zinnias, you should choose seeds with full grains and intact conditions, and it is best to use new seeds that have not been picked for a long time, as old seeds will reduce the germination rate and will not bloom vigorously, so it is necessary to select seeds strictly. Zinnia seeds should also be sterilized and disinfected before sowing to prevent them from being attacked by pests and diseases, so that it can germinate smoothly. <>

3. Sowing method

Zinnia seeds should be prepared and disinfected before sowing to provide a good soil environment for seed germination and growth, after treatment, zinnia seeds should be mixed with fine sand, evenly sprinkled in the soil, and then covered with soil and watered, pay attention to the seeds must be covered tightly, otherwise it is difficult to germinate. The germination stage and seedling stage of zinnia seeds should not be irradiated by strong light, and appropriate shading measures should be taken to ensure that the seedlings thrive.

4. Precautions

The so-called growth is not affected, but the flowering period is limited. First of all, the temperature can be appropriately lowered, and then it can be fertilized. When the flower core starts to grow, it can be removed to promote the transfer of growth hormone. This is also a way to limit the height.

Zinnia. The most common planting method is sowing seeds. Seeds should be selected with fewer impurities and fuller particles.

The soil should be sterilized and disinfected first, and the soil can be turned over and fried, and the high temperature can kill the bacteria and pests in the soil, or the soil should be exposed to the sun for a while to kill the bacteria in the soil. Mix some compound fertilizer or organic fertilizer in the soil, and stir well. Put it into the seedling tray, don't fill it, leave a little height, put the seeds one by one, put 2-3 seeds in each grid, cover it with a layer of soil after all of it, and then water it all once.

Planted zinnias should be moved to a warmer place so that they can get proper sunlight. Generally, it will germinate in about 1 week, and when it grows a few leaves, it will be planted in a larger small pot, which is conducive to its root growth, and a little fertilizer is added to mix it to improve its growth rate. After changing the pot, water it, check if there are weeds, and if there are weeds, just pull it out, and the planting time is generally in the spring, but as long as the temperature is around 20 degrees, it can be planted.

Zinnia is an annual plant, although the flowers are small, but the stem is straight and straight, and relatively stout, the whole stem is covered by short hairs, relatively rough, generally short in about 30cm, high can reach 120cm, the petals are multi-whorled, generally ovate, the flower color is white, green, yellow, and other multi-colored, the middle of the flower disc is dominated by tubular flowers, can bear fruit, the flowering period is 6-9 months. It is a common ornamental flower in flower beds, domestic flowers and offices. So since zinnia is so good, how do you raise it?

Let's take a look at the cultivation method of zinnia.

How to raise zinnias.

1. Temperature requirements: Zinnia likes a warm environment, generally suitable for growth around 15-23, and early summer is the peak growth period.

2. Light requirements: The sunshine time is related to the growth of zinnia in the later stage, and the stems of its plants with less than 10 hours of sunshine are more fragile, so they are easy to get sick.

3. Water requirements: The sunshine time is relatively long, so the water requirements are also very high, basically every day to water, summer flowers to keep the soil moist. In this way, a good flowering can be guaranteed.

4. How to prevent growth: The so-called growth is not affected, but the flowering period is limited. First of all, the temperature can be appropriately lowered, and then it can be fertilized.

When the flower core starts to grow, it can be removed to promote the transfer of growth hormone. This is also a way to limit the height.

5. What to do if zinnias are easy to lodging: generally high varieties are easy to lodging, first do not topping the seedlings for a long time to reduce the height, and then set up pillars after waiting to grow to a certain height to support growth. Proper watering, keep sufficient water, but also reasonable fertilization to ensure balanced nutrition.

Zinnia is forbidden to be planted continuously, and continuous planting is easy to lodging.

6. How to shape zinnia: the size of zinnia flowers is related to whether it is topped, and proper topping can dwarf the pillars and increase the number of flowers a lot. Generally, the topping period is when the plant grows about 4 true leaves, and it can be planted and topped.

After the flowers bloom, the flower heads should be removed in time to ensure that the buds are ready for the next year's flowers.

7. What to do with zinnia disease: Generally, zinnia disease is mainly white star disease and black spot disease, which is generally because of bacterial fungal infection resulting in spots on the leaves, the solution is to minimize continuous planting, and then the fertilizer needs to be sufficient, and disinfection and sterilization need to be carried out before seed sowing to avoid the growth of parasites. If the diseased plant is an adult, the diseased part can be cut off and then supplemented with pesticides.

Generally, scab is a small brown spot on the leaves, and after a long time, there will be a dark green moldy substance. The black spot disease is mainly rotten, easy to grow at the seedling stage, and there are many small black spots, which gradually spread. Mosaic disease, on the other hand, is a non-artificial dwarf plant that affects the color and morphology of the flowers.

It is usually caused by aphids.

1. Temperature: between 15 and 30 degrees is more suitable for zinnias. And because it is a plant that is neither cold nor heat tolerant, it needs to be adjusted in both summer and winter.

In summer, it's best not to get higher than 35 degrees. In winter, try to be around 15 degrees.

2. Watering: Zinnia is a relatively drought-tolerant plant, and it is afraid of waterlogging. Therefore, it is enough to keep the potting soil not completely dry at ordinary times, and you don't need to water too much.

However, in the summer, due to the high temperature, the evaporation is relatively fast, so you can water a little every day. In winter, try to water as little as possible.

3. Light: It is a very light-loving plant. During its formative years, even full sunlight is possible. Direct light does not harm it. Therefore, try not to put it in a semi-shady place, let alone completely dark.

4. Soil: Its requirements for soil are mainly nutrients and air permeability. It is best to use fertile and loose soil.

1. The planting of zinnia can be carried out by means of seed propagation or cuttings propagation.

2. Seed propagation needs to be strictly disinfected with soil and seeds, sowing seeds during April and June, and maintaining the amount of watering after sowing, and not too much water to rot the roots.

3. Cuttings can be selected for 10 cm side buds for cuttings, which generally take root in 5-7 days.

Hello! Zinnia is a well-known ornamental plant, which is sought after by the majority of pot friends because of its single independent flowering and gorgeous flower color.

Conservation and management methods and precautions for zinnia:

Zinnia likes well-drained, fertile and loose soil, and the configuration of culture soil can be mixed and matched with humus, fine sand, and garden soil, so as to achieve soft, breathable, comfortable and fertile growth needs.

For potted zinnia lighting requirements, we can give them all-day sunlight. Because zinnia is a light-loving plant, if the light is insufficient, it is easy to cause the plant to grow, and the resistance will also be weakened, and the flowering period will also be adversely affected, but the high temperature in summer makes it necessary to avoid exposure to the sun, and it needs to do a good job of shading and cooling measures.

Zinnia prefers a warm, sunny growing environment and is not tolerant of extreme heat, with a suitable growing temperature between 18-20 during the day and 15-16 at night. If the living environment is good, it will grow at an alarming rate in summer.

In order to ensure the humidity of the potting soil to facilitate the supply of water to the plants, it is recommended to water the plants every day in summer, and the amount of watering depends on the situation in the pot, as long as there is not a large amount of water in the pot.

Before potting the plant, it is necessary to apply a small amount of compound fertilizer to the bottom of the pot as the base fertilizer, and after planting, the roots of Dixon can be easily irrigated for disinfection. The soil moisture in the pot should be maintained for 7 days after planting to promote the normal growth of the root system. When the root system of the plant is more distributed, and even touches the bottom of the pot, it can be fertilized in time, about every 7 days.

Spray thin water and fertilizer on sunny days, apply granular fertilizer on rainy days, and add some calcium fertilizer.

When the seedlings grow 4 leaves, in addition to potting and planting, we should also pluck the tops in time to promote their germination of more side branches, dwarf the plants, and more importantly, shape the potted plants. After the flowers are gone, it is necessary to cut off the dry flower heads in time, which will not only help reduce nutrient consumption, but also allow more flowers to bloom in the next round.

Common diseases of zinnia are scab, black spot, mosaic disease. Therefore, we should often observe the growth of plants in the process of re-maintenance management, and once we find that the plants are sick, we must take corresponding measures to avoid affecting the growth and flowering of plants, and even lead to death.

1. Because the lateral roots of zinnia are relatively few, the recovery growth after transplanting is relatively slow, so it should be transplanted in a timely manner, and the seedlings should be transplanted as much as possible. If you wait for the plant to grow up before transplanting, it is easy to cause the branches and leaves under the plant to dry up, affect the growth and development, and transplant growth.

2. The plant needs to avoid strong direct sunlight in the early stage of seedling growth, otherwise it is easy to burn the seedling.

Water and fertilizer management Watering: Due to the high demand for light, water is very easy to evaporate, so it is necessary to maintain proper humidity frequently, and water every day in summer.

Fertilization: 2-3 grams of compound fertilizer are applied to the bottom of the pot during planting, and 800 times of liquid Dixon irrigation roots are used to disinfect after planting. Within 1 week of planting, the potting soil should be kept moist to promote the growth of the surface root system, and the root system of the eggplant can be topdressed when it grows to the bottom of the pot, and fertilization is applied 2-3 times a week (water and fertilizer on sunny days, the concentration is controlled within 200mg kg, and 2-3 grams of granular fertilizer are applied in rainy days), and calcium fertilizer can also be supplemented with 1 time.

Temperature, light Temperature: Zinnia likes to be warm and sunny, not tolerant to scorching heat, high temperature and severe cold, and grows at a suitable temperature of 18-20 during the day and 15-16 at night. The growth is particularly rapid in summer.

Illumination: It can directly use full sunlight and direct sunlight. If there is not enough sunlight, the plants are prone to growth, their resistance is weak, and flowering will also be affected.

Plant stereotyping If zinnia is not topped, there are too few side branches and fewer flowers, and proper topping can promote plant dwarfing and flower increase. When the seedlings grow to 4 leaves, they are planted and topped to promote the growth of lower branches to form a better plant shape.

One week after planting, start topping, leave 4 pairs of true leaves, and decide whether to pick again according to the growth and branching of the plant. During the flowering period, phosphorus and potassium fertilizers such as potassium dihydrogen phosphate continue to be screwed in to promote the continuous growth of flower heads. After the flowers wither, the dead flower heads should be cut off in time to reduce the loss of nutrients.

Pest control Common diseases of zinnia: white star disease, black spot disease, mosaic disease.

Zinnias also need to be guarded. Zinnia seedlings are very easy to grow during the growing season. Pay attention to lowering Wendy, perform topping, and water less.

Zinnia is an annual herb that blooms for a long time, from June to September, with bright flowers in full bloom and beautiful colors that can be maintained until the seeds are ripe. The first flower of zinnia is at the top, and then new flowers are formed at the top of the side branches, each one is taller than the other, so zinnia has the reputation of "backgammon". Below, I will introduce you to the cultivation method of zinnia, I hope you like it.

1. Morphological characteristics

Zinnia annual. The stems are erect, 30-100 cm high, covered with rough hairs or long stiff hairs. Leaves broadly ovate or oblong-elliptic, 5-10 cm long, cm wide, slightly heart-shaped at the base, coarse on both sides, densely covered with short rough hairs below, with three veins at the base.

The inflorescence is centimeter in diameter, solitary at the end of the branch, and there is no hollow and thick peduncle peduncle. bracts broadly bell-shaped; The bracts are multilayered, broadly ovate or ovate-elliptic, the outer layer is about 5 mm long, the inner layer is about 10 mm long, and the margins are black. There is an extended appendage at the upper end of the bracket; Patches are purplish-red, tassel-shaped triangles.

Tongue-like flowers crimson, rose, violet or white, tongue obovate, apex 2-3 lobed or entire, covered with short hairs above, pubescent below. Tubular-flowered yellow or orange, 7-8 mm long, apical lobes ovate-lanceolate, covered with yellowish-brown dense hairs. Female achenes obovate, 6-7 mm long, 4-5 mm wide, flattened, ventral with 1 ridge in the middle and margins on both sides, apex truncated, base narrow, densely hairy; Tubular flower achenes obovate wedge-shaped, 7-8 mm long, mm wide, extremely flattened, sparsely hairy, with short teeth at the apex.

The flowering period is from June to October, and the fruiting period is from July to October.

2. Growth habits

Warm, not cold-tolerant, sunny, afraid of heat, strong, drought-resistant, barren-tolerant, avoid continuous cropping. The roots are deep and the stems are hard and not easy to lodging. It is advisable to grow in fertile deep soils. The temperature is 15-30 °C during the growing season.

3. Cultivation methods of zinnia

1. Routine management

Zinnia is robust, drought-tolerant, sun-loving, and semi-shade-tolerant. It grows well in loose, fertile, well-drained soil. Flowering begins in late June.

A group of flowers that bloom toughly, the flower shape is large, and the color is particularly bright. Coincidentally, after entering the scorching heat, due to the high temperature, the flowering is not good, and the seeds do not form. Although zinnia is drought tolerant, it must not be watered less, especially in summer, and there must be no shortage of water, otherwise, the flowering will not be normal after the heat.

To cultivate zinnia, a small amount of phosphorus, potassium and calcium fertilizer should be added to the base fertilizer, which can prevent the fragility of the stem and prevent the lodging of splitting.

2. Reproduction methods

Propagating zinnia is usually sown by sowing method, which can be sown in the open field in April, and transplanted once when the seedlings have 3-4 true leaves. Cuttings can also be used in summer, but they should be shaded, otherwise it will not be easy to survive.

3. Regulate the flowering period

Zinnia is a relatively short-day plant, and the flowering period can be regulated by adjusting the length of daylight. The sunshine is longer than 14 hours, the flowering is delayed, it takes 70 days from sowing to flowering, and there are many tongue-like flowers; If the sunshine is shorter than 12 hours, the flowering is early, and it only takes 60 days from sowing to flowering, but tubular flowers are the most common. In addition, the flowering period can be controlled by adjusting the sowing date and topping time.