Matters needing attention in sowing and propagation of star flowers

There are many colors and varieties of star flowers, which are also called five-star flowers because their flowers are 5-split into five-pointed stars. The flowering period of starry flowers is long, which is very suitable for landscape arrangements such as potted plants and flower beds. Artificial reproduction of starry flowers can generally be done by sowing. The editor will briefly introduce to you the matters needing attention in sowing and breeding of starry flowers. Friends who like them can understand them together.

Starry flowers

Because the seeds are small in the seedling stage, the seedlings are often sown by cultivating hole seedlings. The commonly used sowing medium is rich in humus, good drainage and aseptic medium, the PH value is 6.5mur6.8 and the EC value is 0.75ms/cm. Sow seeds on the acupoint plate and sow 1 seed in each hole. The size of hole implant should be 1.5 Mel 2 cm. About 14 days after sowing, the seed began to germinate, and the optimum temperature was 23 ℃. The seed germination needed light and could not be covered. During germination, it should be fully watered to accelerate the dissolution of the outer layer of powdered flowers and promote germination.

It can be transplanted into the pot 9 weeks after sowing, and the diameter of the flowerpot should be 10-15cm. The cultivation medium uses peat soil which is aseptic, slightly fertilized and well drained. The suitable PH value is 6.5 ℃ 6.8, warm heat and sufficient sunshine are helpful to the growth of starry flowers. During the growth period, the night temperature should be kept above 17 ℃, the daily temperature should be above 22 ℃, and the temperature should be lower than 10 ℃, which will make the flowering irregular and delay or hinder the flower blooming.

Star flowers like the environment with sufficient sunshine, strong light can improve the quality of the plant, the stronger the light, the tighter the plant. Winter cultivation should pay attention to supplementary light. During the growth period, the relative humidity in the air is low, which can reduce the disease of leaves. Star flowers should not be over-watered and keep the cultivation medium slightly dry, which can promote flower bud differentiation and growth.

How to reproduce and the method of seed sowing

How to sow starry flowers 1. Preparation before sowing

First of all, we should prepare the seeds of starry flowers, and in addition, we should also prepare a burrow tray as a seedling breeding facility.

The sown soil is generally rich in humus, good drainage, sterile soil, the clay content of the soil is 10% Mur20%, coconut fiber, perlite and other substances can be added to the soil.

2. Steps of seed sowing

First of all, the starry flower seeds are sown in the hole plate, and it is necessary to remember that each hole is sown with a seed, and the hole size is 1.5 mi 2 cm.

Generally speaking, the seeds germinate about 10 ℃ 14 days after sowing, the temperature of germination is controlled at 23 ℃-26 ℃, and the relative humidity in the air is kept at 100% until the leaves grow out.

Star flower seeds during germination, to maintain sufficient moisture, in addition, you can add the dissolution of the outer layer of instant powder flowers to promote seed germination.

Nine weeks after the seeds were sown, the flower friends can transplant the flowers into a pot with a diameter of 10m ~ 15cm. The cultivation medium should be sterile, slightly fertilized and well drained peat soil with a pH value of 6.5-6.8.

3. Matters needing attention in sowing

A. before the seeds are sown, one or two kilograms of fully balanced fertilizer and slow-release fertilizer are applied each cubic meter in the substrate to keep the sown soil fertile. In short, it is necessary to provide sufficient nourishment for the seeds.

B, in the stage of seedling growth, the relative humidity should be reduced to 50% to prevent leaf diseases.

C. If the illuminance is kept at 1000 lux during germination, the new buds will grow neatly and of higher quality, and the illuminance will be maintained at 1 00000 lux after germination. As the seedlings grow, the illuminance must be increased to 50000 lux and the temperature should be controlled.

D, let the seedlings receive sunlight as soon as possible after germination, so as to avoid overgrowth and promote the rapid growth of plants.

Star flower Pentas Lanceolata star flower picture: star flower how to raise / star flower how to breed star flower business card star flower Pentas Lanceolata star flower introduction of star flower (scientific name: Pentas Lanceolata) is native to tropical Africa or cultivated, for perennial perennial flowers, drought and high temperature tolerance, long-lasting flowering, there are pink, scarlet, pink, white and other flowers, florescence is mainly concentrated in March-October Suitable for potted plants and layout of flower beds, flower beds and landscape layout. Fanxing flowers belong to Rubiaceae perennial herbaceous flowers. General plant height 30 cm to 40 cm, stem erect, strong branching, leaves opposite, lanceolate, leaf tip acuminate, 6 cm to 8 cm long, terminal cymose inflorescence, floret tube-shaped, color 5-split into five-pointed star, hence the name Wuxing flower. Dozens of five-star flowers gather into clusters, which are very gorgeous and pleasing to the eye. Native to tropical Africa or cultivated, perennial grass flowers with persistent roots, drought and high temperature tolerance, long-lasting florescence, pink, scarlet, peach, white and other flowers, the flowering period is mainly concentrated in March-October, suitable for potted plants and layout of flower beds, flower beds and landscape layout. The morphological characteristics of starry flowers: the floret is tube-shaped, and the Corolla is star-shaped. Branches: the branches are green-brown with fine white hairs. Strong sex, good drought tolerance. Stem: erect, green, brown near root, white hairy on branches. Leaves: simple, opposite, long lanceolate, entire, papery, petiolate, green, conspicuously indented, rough, pinnate. Flowers: Cymes, stem terminal, florets star-shaped, tube-shaped, composed of more than a dozen star-shaped florets. Star flowers: red, purple, pink, white and so on. Florescence: spring and autumn. Fruit: capsule membranous, seeds fine, about 35000 grains / g. Star flowers generally plant height of 30-40 cm, erect stems, strong branching force, leaves opposite, lanceolate, leaf tip acuminate, 6-8 cm long, terminal cymose inflorescences, florets tube-shaped, color 5-split into pentagonal stars, hence the name Flower. Dozens of five-star flowers gather into clusters, which are very gorgeous and pleasing to the eye. Perennial perennial grass flowers, the florescence is long, there are pink, scarlet, pink, white and other flowers, the flowering period is mainly concentrated from March to October. The ecological habit of star flower likes high temperature, and the suitable temperature for growth is 25-30 ℃. It is suitable for cultivation in sandy soil rich in organic matter. It needs good drainage and develops well in full sunshine and half-day sunshine. Warm heat and sufficient sunshine contribute to the growth of star flowers. During the growth period, the night temperature should be kept above 17-18 ℃, and the daily temperature should be above 22-24 ℃. Temperatures below 10 ℃ will cause irregular flowering and delay or hinder the blooming of flowers. Because the seeds are small in the seedling stage, the seedlings are often sown by cultivating hole seedlings. The commonly used sowing medium is rich in humus, good drainage and aseptic medium. The PH value is 6.56.8 and the EC value is 0.75ms/cm. Sow seeds on the acupoint plate and sow 1 seed in each hole. The size of hole planting should be 1.5-2 cm. It began to germinate about 10-14 days after sowing, and the optimum temperature was 23-26 ℃. Light was needed for seed germination and could not be covered. During germination, it should be fully watered to accelerate the dissolution of the outer layer of powdered flowers and promote germination. Star flowers like strong light, let the seedlings receive sunlight as soon as possible after germination, so as to avoid overgrowth and promote the rapid growth of plants. It can be transplanted into the pot 7-9 weeks after sowing, and the suitable diameter of the flowerpot is 10-15cm. Before potting, appropriate fertilization should be applied to make the plant grow strongly so as to reduce the impact on the plant. The cultivation medium uses peat soil which is aseptic, slightly fertilized and well drained. The suitable PH value is 6. 5-6. 8. Warm heat and sufficient sunshine are helpful to the growth of star flowers. During the growth period, the night temperature should be kept above 17-18 ℃, the day temperature should be above 22-24 ℃, and the temperature should be lower than 10 ℃, which will make the flowering irregular and delay or hinder the blooming of flowers. The cultivation techniques of Flowers 1. 7-9 weeks after transplanting and sowing, the flowerpot should be 10-15 cm in diameter, 1 seedling could be planted in 10 cm pot and 1-2 seedlings could be planted in 15 cm pot. Before potting, appropriate fertilization should be applied to make the plant grow strongly so as to reduce the impact on the plant. 2. The cultivation medium uses peat soil which is aseptic, slightly fertilized and well drained. The pH value should be 6. 5-6. 8 to avoid iron poisoning and magnesium deficiency. If the pH value is lower than 6.0, due to iron poisoning, there will be a serious leaf edge burning phenomenon, which will make the plant stop growing. 3. Warm temperature and sufficient sunshine are helpful to the growth of star flowers. During the growth period, the night temperature should be above 17-18 ℃ and the daily temperature should be above 22-24 ℃. Temperatures below 10 ℃ will cause irregular flowering and delay or hinder the blooming of flowers. 4. the stars and flowers like the environment with plenty of sunshine, the stronger the light is, the tighter and stronger the plant is. Therefore, in the winter of weak light and short days, attention should be paid to supplementary illumination. 5. Water Xinghua is more resistant to drought, but not resistant to water and moisture. During the growth period, excessive watering should be avoided, and stagnant water in the cultivation medium should be avoided so as not to induce root rot. When watering, the water temperature should not be too low (that is, the water temperature should be consistent with the medium temperature). Excessive watering will often yellowing the plant and slow the growth of flowers. 6. One week after fertilization and planting, 800 times of chlorophyllin was applied, and it was irrigated every 7-10 days. When the plant enters the middle stage of growth (that is, the plant height is 8-10 cm), 800-fold solution of "flowering essence" can be applied once a week to promote flower bud differentiation and growth. 7. After other (1) planting, the heart can be removed once when the plant has 3-4 pairs of true leaves, so as to make the branches neat and blossom consistent. (2) generally, you can pick the heart only once. If the flowering time is expected to be too early, you can pick the heart twice. Each picking of the heart will delay flowering for 10-12 days. (3) cultivation time: 110-120 days for 10 cm flowerpots and 120-140 days for 15 cm flowerpots. Because the seeds are small in the seedling stage, the seedlings are often sown by cultivating hole seedlings. The commonly used sowing medium is rich in humus, good drainage and aseptic medium. The PH value is 6.56.8 and the EC value is 0.75ms/cm. Sow seeds on the acupoint plate and sow 1 seed in each hole. The size of hole planting should be 1.5-2 cm. It began to germinate about 10-14 days after sowing, and the optimum temperature was 23-26 ℃. Light was needed for seed germination and could not be covered. During germination, it should be fully watered to accelerate the dissolution of the outer layer of powdered flowers and promote germination. It can be transplanted into the pot 7-9 weeks after sowing, and the suitable diameter of the flowerpot is 10-15cm. The cultivation medium uses peat soil which is aseptic, slightly fertilized and well drained. The suitable PH value is 6. 5-6. 8. Warm heat and sufficient sunshine are helpful to the growth of star flowers. During the growth period, the night temperature should be kept above 17-18 ℃, the day temperature should be above 22-24 ℃, and the temperature should be lower than 10 ℃, which will make the flowering irregular and delay or hinder the blooming of flowers. Star flowers like the environment with sufficient sunshine, strong light can improve the quality of the plant, the stronger the light, the tighter the plant. Winter cultivation should pay attention to supplementary light. During the growth period, the relative humidity in the air is low, which can reduce the disease of leaves. Star flowers should not be over-watered and keep the cultivation medium slightly dry, which can promote flower bud differentiation and growth. The fertilizer application of starry flowers often applies the solution of "chlorophyll essence" 800 times of water, once every 7-10 days, to promote the extension of leaves. After the middle stage of growth, the aqueous solution of 15-30-15 (N:P:K) was applied once every 7-10 days to promote flower bud differentiation and growth. It needs topdressing during flowering, cut off the residual flowers after flower fade, can sprout and blossom again, and planting in East China needs greenhouse to survive the winter. The main diseases and insect pests are gray leaf spot, red spider, whitefly, aphid and so on. Preventive methods include keeping the cultivation site clean, using sterile soil, cultivation medium and pot, etc. The main results are as follows: (1) after planting, the heart can be removed once when the plant has 3-4 pairs of true leaves, so as to make the branches neat and blossom consistent. (2) generally, you can pick the heart only once. If the flowering time is expected to be too early, you can pick the heart twice. Each picking of the heart will delay flowering for 10-12 days. (3) the cultivation time is 110-120 days in 10 cm flowerpot and 120-140 days in 15 cm flowerpot. Star flowers like the environment with sufficient sunshine, strong light can improve the quality of the plant, the stronger the light, the tighter the plant. Winter cultivation should pay attention to supplementary light. During the growth period, the relative humidity in the air is low, which can reduce the disease of leaves. Star flowers should not be over-watered and keep the cultivation medium slightly dry, which can promote flower bud differentiation and growth. The fertilizer application of starry flowers often applies the solution of "chlorophyll essence" 800 times of water, once every 7-10 days, to promote the extension of leaves. After the middle stage of growth, the aqueous solution of 15-30-15 (N:P:K) was applied once every 7-10 days to promote flower bud differentiation and growth. It needs topdressing during flowering, cut off the residual flowers after flower fade, can sprout and blossom again, and planting in East China needs greenhouse to survive the winter. The cultivation method of star flower, sowing condition, ① seedling raising facility: hole plate. ② medium: use humus-rich, well-drained, sterile breeding media such as "Zhuangmiao No. 3" of Nongyou Seedling Company. ③ pH value: 6. 5-6. 8. ④ EC value: 0.75ms/cm. ⑤ light: seeds need light to germinate, so they do not cover the soil. The light intensity during germination is 1000 lux, which can make the germination neat and improve the quality of seedlings. Star flowers like strong light, let the seedlings receive sunlight as soon as possible after germination, so as to avoid overgrowth and promote the rapid growth of plants. After germination, the illuminance remained at 1 0000-25000 lux. As the seedlings grow, the illuminance must be increased to 50000 lux and the temperature should be controlled. ⑥ temperature: the optimum temperature for germination is 20-30 ℃. ⑦ humidity: keep the relative humidity in the air at 100% until the cotyledons grow out to avoid the seedling medium being too wet. At the stage of seedling growth, the relative humidity should be reduced to 50% to prevent leaf diseases. Sow on demand in the hole plate or seedling plate. Water star flower seedlings grow well in the humid environment, so try to keep the medium moist in the seedling stage. In order to avoid spraying the plant in a state of high humidity, the whole plant was supplied with water at the seedling stage, and the water was applied in the way of soaking basin. The air relative humidity should be 50%. Water management should be based on the principle of dry and wet, but it should not be too dry. As soon as the radicle grew, 3000-fold aqueous solution of chlorophyllin in the formula of 15-10-15 (N ∶ P ∶ K) was applied once a week. After the cotyledons were unfolded, the concentration could be increased by 2000 times. The suitable temperature in the seedling stage (4-5 weeks after sowing) was 17-20 ℃. The concentration of fertilization is 1000-1500 times, once a week, so that the seedlings grow rapidly. Pay attention to keep the EC value between 1.0 and 1.5 ms/cm. If the pH value of the culture soil is lower than 6.0, the plant will have serious iron poisoning and the growth will slow or stop. Regular application of calcium nitrate can avoid the decrease of pH value. The propagation of star flowers can be done by sowing or cutting, which can be carried out all the year round, with the best in spring and autumn. Cuttage is the main method of propagation, full-day or half-day sunshine is the best for growth and flowering, branches are easy to grow in shaded places, and flowering is poor. The drainage should be good. If the soil is stagnant, the root will rot easily. Because the seeds are small in the seedling stage, the seedlings are often sown by cultivating hole seedlings. The commonly used sowing medium is rich in humus, good drainage and aseptic medium. The PH value is 6.56.8 and the EC value is 0.75ms/cm. Sow seeds on the acupoint plate and sow 1 seed in each hole. The size of hole planting should be 1.5-2 cm. It began to germinate about 10-14 days after sowing, and the optimum temperature was 23-26 ℃. Light was needed for seed germination and could not be covered. During germination, it should be fully watered to accelerate the dissolution of the outer layer of powdered flowers and promote germination. 1. Star flowers like strong light, and let the seedlings receive sunlight as soon as possible after germination, so as to avoid overgrowth and promote the rapid growth of plants. It can be transplanted into the pot 7-9 weeks after sowing, and the suitable diameter of the flowerpot is 10-15cm. Before potting, appropriate fertilization should be applied to make the plant grow strongly so as to reduce the impact on the plant. The cultivation medium uses peat soil which is aseptic, slightly fertilized and well drained. The suitable PH value is 6. 5-6. 8. Warm heat and sufficient sunshine are helpful to the growth of star flowers. During the growth period, the night temperature should be kept above 17-18 ℃, the day temperature should be above 22-24 ℃, and the temperature should be lower than 10 ℃, which will make the flowering irregular and delay or hinder the blooming of flowers. 2. Starry flowers like the environment with sufficient sunshine, strong light can improve the quality of the plant, the stronger the light, the tighter the plant. Winter cultivation should pay attention to supplementary light. During the growth period, the relative humidity in the air is low, which can reduce the disease of leaves. Star flowers should not be over-watered and keep the cultivation medium slightly dry, which can promote flower bud differentiation and growth. 3. The fertilizer application of starry flowers often applies "chlorophyllin" 800 times water solution, once every 7-10 days, to promote the extension of leaves. After the middle stage of growth, the "flowering essence" 800 times water solution of 15-30-15 (N:P:K) formula was applied every 7-10 days to promote flower bud differentiation and growth. It needs topdressing during flowering, cut off the residual flowers after flower fade, can sprout and blossom again, and planting in East China needs greenhouse to survive the winter. The main diseases and insect pests of star flower are gray spot, red spider, gray mold, whitefly, aphid and so on. Preventive methods include keeping the cultivation site clean, using sterile soil, cultivation medium and pot, etc. The symptoms and control of whitefly and gray mold: 1. Whitefly symptoms: the young leaves of the plant faded to yellow, and finally the whole plant wilted and died. Prevention and control: (1) use "anti-insect net" to block the invasion of external insect pests. (2) thoroughly fumigate the cultivation place and remove weeds before cultivation. (3) 2.5% kung fu 2500-3000 times solution or 20% methamphetamine 2500 times solution was sprayed throughout the plant. 2. Symptoms of Botrytis cinerea: mostly caused by wet or over-watering in the rainy season. Waterlogged brown spots are produced at the edge of stems and leaves, which gradually expand to cause branches and leaves to rot. When the air humidity is high, gray mildew often appears in the disease department. Prevention and control: (1) keep the cultivation medium semi-dry, do not over-watering, and strengthen the ventilation of the cultivation place. (2) the cultivation medium was thoroughly disinfected. (3) before cultivation, the site was disinfected with chlorothalonil smoke remover at a dose of 200 g / mu, which should be carried out continuously every 10 days after cultivation. (4) when the disease occurs, the whole plant is sprayed with 1500-fold solution of 50% prohydantoin or 2000-fold solution of Trichoderma. The distribution area of starry flowers is native to tropical Africa, Madagascar, Arabia and other places, and is now cultivated everywhere. Fanxing peanuts are strong in nature, like cool and dry, drought-resistant and high-temperature resistant, and the optimum temperature is 20-30 degrees C. Suitable for cultivation in sandy soil rich in organic matter, good drainage, full sunshine and half-day sunshine are well developed. Slightly resistant to half-shade, requires more than 4 hours of full-day sunshine every day, seeds good light sprouting, too shaded place will make branches grow too long, poor flowering. The medium can not be covered after sowing, but the medium and air should be kept moist. The suitable temperature for germination is 20-26 ℃, and the range of plant growth temperature is wide. It can grow at 10-30 ℃, but it grows better at 18-30 ℃, from sowing to flowering. After the seedlings are planted and survive, it is necessary to pick the heart to promote multiple lateral buds and more flowering. After the flower fade, the residual flowers can be removed and fertilized to promote more new buds and continue to bloom. The variety classification "Xinxiang" series is the first series of potted flowers propagated by seeds, with a plant height of 20-25 cm, good branching and compact plant type. The loose inflorescence is full of star-shaped florets, which is refreshing. Quite heat-resistant, drought-resistant, widely used in potted flowers, but also suitable for flower beds, balconies and landscape layout. There are four colors: pink, purple, red and white. It takes about 4 months from sowing to flowering. The "Madame Butterfly" series has strong fertility and strong adaptability. The plant is 30 cm high and can grow up to 50 cm in high temperature season. Large flowers, many flowers, Cymes up to 7-10 cm in diameter. There are red, bright pink, cherry red, rich peach, light purple and other colors. The function of star flower 1, for nectar plants, can attract butterflies. 2. Potted plants are often beautified, gardens are landscaped and flower beds are arranged. Cut flowers can also be used as flower arrangement materials. The garden use of star flowers is suitable for potted plants and layout of flower beds, flower beds and landscape arrangements. Pictures of starry flowers