Saxifraga leaves yellowing how to do, frequently watering / more fertilization / shading / disease prevention / temperature control

In the growing period of Saxifraga, the ventral side of the leaf should be green, but sometimes it will cause the leaf yellowing because of ignoring the breeding methods and matters needing attention of potted Saxifraga. What if the leaves of Saxifraga are yellowed? The answer is to find the cause and prescribe the right medicine.

What if the leaves of Saxifraga turn yellow?

Although Saxifraga is very adaptable, if you don't pay attention to maintenance, the leaves may turn yellow. Through statistics, it is found that the main reasons for the yellowing of Saxifraga leaves are as follows: insufficient watering, too strong light, too little fertilization, too low temperature, diseases and insect pests and so on.

1. Insufficient watering

Saxifraga's favorite growing environment is moist soil, and to ensure this, it must be watered frequently. If the basin soil becomes dry, yellowing is likely to occur. The reason is that it is not watered enough.

Solution: water once a day during the growing period, once in the morning and evening in summer, the water does not need to be watered too much, and the soil is moist without stagnant water. You can usually spray water on the leaf surface.

2. The light is too strong

When Saxifraga is in a strong light environment, its leaves will turn yellow, such as in direct sunlight, because Saxifraga prefers shady places.

Solution: move Saxifraga to a cool and ventilated place, do not let it in the sun, summer should be its shade.

3. Fertilization is too little.

Although Saxifraga does not have a high demand for fertilizer, it does not mean that it does not need fertilizer. If it is always not fertilized, it is entirely possible for the leaves to turn yellow.

Solution: what if the leaves of Saxifraga are yellowed because of less fertilization? The answer is topdressing. Watering thin pancakes every half a month can gradually improve the yellowing of leaves.

4. The temperature is too low

Most Saxifraga varieties have strong cold tolerance and can survive in an environment of 5 degrees, but if the temperature is always very low, Saxifraga is also difficult to bear, for example, if the temperature is below 0 degrees for a long time, the leaves will turn yellow.

Solution: move Saxifraga indoors when the temperature is low in winter and keep the ambient temperature not lower than 5 degrees, otherwise frostbite may occur.

5. Diseases and insect pests

Many people think that Saxifraga culture does not need to pay attention to diseases and insect pests, but in fact, diseases and insect pests pose a great threat to Saxifraga, which causes the leaves to turn yellow and causes Saxifraga to die.

Solution: the emergence of diseases and insect pests should be timely treatment, usually pay attention to correct maintenance, maintain Saxifraga growth environment ventilation, can effectively prevent diseases and insect pests.

Conclusion: the yellowing of Saxifraga leaves is directly related to the environment and conservation methods, and many people do not attach importance to this phenomenon, which often leads to more serious consequences. therefore, when it is found that the leaves are yellowing, we should investigate the cause as soon as possible and solve it in time, otherwise the previous efforts will fall short of success.

How to raise Saxifraga how to cultivate Saxifraga and matters needing attention

Saxifraga is relatively simple to raise, its adaptability is very strong, no matter outdoor or indoor, it is easy to survive, and this plant is hairy, furry, very lovely, like friends can keep a pot on the balcony and other places.

How to raise Saxifraga

In pot cultivation, rotten leaf soil and garden soil can be mixed in the same amount and a small amount of mature base fertilizer can be used as substrate. It grows well under the condition of sufficient light, and it should receive more sunlight in other seasons except to avoid direct sunlight in the middle of summer. If it is kept in the indoor light too dark for too long, the leaves will be dark and lack vitality. In addition, if it is placed indoors for a long time, it is not suitable to suddenly move directly to the sun. It is better to move to the light first, so that it can have an adaptation process to see the sun again, so that the leaves will not be burned. Watering should be appropriate and master the principle that it would rather be dry than wet. Usually scrub the foliar dust with clean water to keep the leaves clean and bright. When sprouting new plants at the root neck in spring, the basin soil should be properly watered to keep the basin soil moist; in summer high temperature season, the basin soil should always be kept moist; the amount of watering should be controlled after the end of autumn, and the basin soil should be kept relatively dry to enhance cold resistance. It does not have high requirements for fertilizer, and it applies dilute liquid fertilizer twice a month in the growing season to ensure that the leaves are green and thick.

Culture methods and matters needing attention of Saxifraga

Culture methods of Saxifraga

1. Saxifraga potted soil selection

The best soil selected by potted Saxifraga is sandy soil rich in organic matter, and it also has good drainage, which can be made by mixing self-made culture soil with river sand.

2. Temperature and light

Temperature: Saxifraga likes warm environment, and the most suitable growth temperature is between 15 ℃ and 25 ℃. Saxifraga is also hardy and can spend the winter at a low temperature of 5 ℃.

However, Saxifraga tricolor is not cold-resistant, and the overwintering temperature is 15 ℃. If it is lower than this temperature, it will die, so it is necessary to keep warm in winter.

Light: if the light is not enough, the color of the leaves will become dim. Indoor shade is also needed in summer to avoid direct light. The room temperature is kept above 5 ℃ in winter. Place in a sunny place near the south window of the room.

3. Water and fertilizer management

Watering: during the growth of Saxifraga, a large amount of water should be watered to make the pot soil fully moist, but the flowerpot should not be immersed in water. The amount of water should be reduced gradually during the two weeks after flowering. When the plant enters the dormant state, as long as the pot soil is not dry.

Watering during the growth period, the basin soil should be kept moist, it is easy to wither and fall the leaves due to drought, and at the same time, it is also necessary to prevent stagnant water in the basin, otherwise the roots are easy to rot.

Fertilization: fertilizer should be applied under the leaves of Saxifraga so as not to stain the leaves and affect the plant growth. During the peak growth period in spring, nitrogen fertilizer was applied every 20 days, and no fertilizer was applied at high temperature in summer and low temperature in winter.

4. Methods of reproduction

Saxifraga can be propagated by sowing and ramet. Sowing is carried out from March to April, and ramet can be carried out in all four seasons, but it is the best in spring and autumn.

Matters needing attention in domestic cultivation of Saxifraga

1. Change the basin: Saxifraga likes loose and breathable soil, and the consolidated soil is easy to make the leaves dim. Therefore, Saxifraga should be changed every other year, in early spring.

2. Diseases and insect pests: Saxifraga diseases mainly include gray mold and powdery mildew. Saxifraga pests may have whitefly and whitefly.

What if the leaves of Saxifraga turn yellow?

1, watering, it is necessary to keep the basin soil often moist to prevent the basin soil from drying.

2. In summer, we should often spray water to the leaf surface and the surrounding ground to enhance the air humidity.

3. Avoid bright light and keep it under the shade in summer.

4. Thin pancakes should be watered every half a month in the peak growing season.

5. The room temperature in winter should be kept at about 12 ℃ to avoid freezing.

Water culture and nursing skills of Saxifraga

1. Water should be added in time when the water level is low, and the water should be changed in time when the water is turbid. It is usually changed every 10 days or so. The root system is easy to rot in high temperature, so the water should be changed frequently.

2. pay attention to clean the container and keep it clean. when the air is dry, you can spray around the plant and increase the humidity to facilitate the growth of the plant.

3. The wilting of leaves should be removed in time. Saxifraga must be cultivated in a semi-overcast environment in order to reflect the beauty of its leaves.

4. Saxifraga can be difficult to survive in places where the sun shines all day. If the light is too strong, the leaves will be burned. If the light is too weak, the color of the leaves will be very dim and not fresh enough. Proper shading treatment should be carried out in spring, summer and autumn, and light maintenance should be carried out with brighter scattered light.

Saxifraga can be cultivated either in soil or in water, and the maintenance of hydroponic culture is a little more difficult than that of soil culture, so it should be taken care of more carefully, but whether it is hydroponic or soil culture, the final effect is the same. can show Saxifraga the most beautiful state.

Breeding methods of potted hydrangea how to raise hydrangea

Hydrangea is a common potted ornamental flower, also known as eight immortal flowers, powder ball, grass hydrangea, etc., for Saxifragaceae Hydrangea shrub plant, the ornamental value is very high, the flower shape is plump, large and beautiful, and its flower color can be red and blue, pleasing to the eye and spirit. Modern parks and scenic spots are planted into pieces to form a landscape. Let's take a look at how to raise potted hydrangea.

Growth habits of Hydrangea

Hydrangea prefers warm, humid and semi-overcast environment, the optimum temperature for growth is 18-28 ℃, and the winter temperature is not lower than 5 ℃. Flower bud differentiation takes 6-8 weeks under the condition of 5-7 ℃. The temperature of 20 ℃ can promote flowering, maintain 16 ℃ after anthesis, and prolong the flowering period. But the heat makes the flowers fade quickly. Potted soil to keep moist, but watering should not be too much, especially in the rainy season to pay attention to drainage, to prevent waterlogging caused by rotting roots, indoor potted hydrangea in winter to slightly dry, too wet leaves are easy to rot. Short-day plants are treated in the dark for more than 10 hours a day, and flower buds are formed in about 45-50 days. Usually, they should be cultivated to avoid the hot sun, and 60-70% shading is the best. Loose, fertile and well-drained sandy loam is the best soil, but the change of soil pH makes the flower color of hydrangea change greatly.

Propagation method of Hydrangea

1. Ramet: ramet should be carried out before sprouting in early spring, the rooted branches should be separated from the mother plant, pot directly, watering should not be too much, and should be maintained in semi-shade, and then transferred to normal maintenance after sprouting new buds.

2. Pressing: the pressing is carried out when the bud germinates and can grow after 30 days. It is cut off from the mother plant in the next spring and transplanted with soil, and it can blossom in the same year.

3. Cutting: cutting in the rainy season, cutting the top twigs, about 20 cm long, picking off the lower leaves, cutting the appropriate temperature of 13-18 ℃, rooting 15 days after cutting.

How to raise potted hydrangea?

1. Soil: the soil for hydrangea planting should be sandy loam with loose, fertile and good drainage. When pot planting, it is appropriate to use 4 parts of rotten leaf soil, 3 parts of garden soil, 2 parts of river sand and 1 part of cake fertilizer. Or with 4 parts of compost soil, 5 parts of sand soil, 1 part of cake fertilizer, or 6 parts of rotten leaf soil, 3 parts of sand (or slag) and 1 part of cake fertilizer. Pour water into the basin, put it indoors for maintenance, and leave the room in early May.

2. Watering: Hydrangea leaves are larger and require more water. Water frequently in spring and summer to keep the basin soil moist. When it is hot in summer, water should be watered once in the morning and evening, and pay attention to proper shade. Less watering in winter, as long as the basin soil humidity can be maintained. During the growing period, watering should be sufficient to keep the basin soil moist, especially in summer.

3. Lighting: Hydrangea is a short-day plant, which should be kept in a semi-shady environment after leaving the room in spring, and move to a well-ventilated shady place in midsummer to prevent sunburn in leaves. After September, the light intensity weakens day by day. In order to promote flower bud differentiation, the flowerpot should be moved to a place with more light.

4. Temperature: Hydrangea prefers warm environment, the suitable temperature for growth is 18-28 ℃, and the winter temperature is not lower than 5 ℃. Flower bud differentiation takes 6-8 weeks under the condition of 5-7 ℃. The temperature of 20 ℃ can promote flowering, maintain 16 ℃ after anthesis, prolong the viewing period, and pay attention to the rapid discoloration of flowers caused by high temperature.

5. Fertilization: hydrangea likes fertilizer. During the growth period, thin pancake fertilizer and water should be applied every 15 days or so. In order to keep the acid reaction of the basin soil, 0.2% ferrous sulfate can be added when applying liquid fertilizer to turn it into alum fertilizer. The application of 0.5% superphosphate soaking solution twice during the bud period can promote the flower to be large and colorful.

6. Pruning: every year in early spring and March, Hydrangea should cut off diseased and weak branches from the base, retain 3-5 strong main branches and cut them short, leaving 2-3 buds in each branch to promote new branches and make them bloom luxuriantly. Through pruning and shaping, the tree can be compact, plump, symmetrical, with many flowers, large flowers and bright colors. If not pruned, the base of the old branch of more than 3 years has been lignified, and it is not easy to germinate new branches, which is easy to form the emptiness in the lower part of the plant and affect the ornamental value.

7. Diseases and insect pests: the main diseases of hydrangea are wilt, powdery mildew and leaf spot, which can be controlled by spraying with 65% zinc wettable powder 600 times. The main pests of hydrangea are aphids and bug bugs, which can be sprayed with 1500 times omethoate EC.

Matters needing attention in Hydrangea

1. Hydrangea prefers acid soil and is not resistant to barren and saline-alkali soil. It grows poorly in alkaline soil, and its branches and leaves turn yellow, so it is suitable for acid soil which is loose, fertile and rich in humus. Its flower color can change from white to red and from red to cyan due to the influence of pH.

2. Hydrangea is moved into the room in the first and middle of October. Watering should be controlled and room temperature should be kept at about 5 ℃ to promote its dormancy. Remove the leaves before entering the room to avoid rotten leaves. From the middle of December, it moved to the sunny place, keeping the temperature 15: 20 ℃, promoting the growth of branches and leaves, and leaving the chamber in late April of the following year.

3. Hydrangea cuttings in March can be moved into a 10 cm basin after rooting, and then planted in a 16 cm basin in the middle of June. The heart was picked for the first time in June. If the heart is plucked in early June, flower buds can be formed in the middle of August. The seedlings cut from May to June can be planted in 16 cm pots from July to August. In order to promote the formation of flower buds in that year, the last coring must be before September, otherwise the flower buds can not be formed in the same year.

4. Hydrangea likes fertilizer. During the growth period, the fertilizer and water of rotten thin pancakes are generally applied every 15 days. In order to maintain the acidity of the soil, 1% ferrous sulfate can be added to the fertilizer solution. Regular watering of alum fertilizer and water can make the plant branches and leaves green, and the application of potassium dihydrogen phosphate 2 times during the budding period can make the flowers bright and colorful. The application of cake fertilizer should avoid summer days, so as not to cause diseases and insect pests and damage the root system.

5. Hydrangea has hypertrophic leaves, luxuriant branches and leaves, and needs more water. In the spring, summer and autumn of the growing season, it is necessary to irrigate enough water to keep the basin soil moist. The summer weather is hot, evaporation is large, in addition to watering enough water, but also spray water to the leaves every day. Hydrangea root is fleshy root, watering can not be excessive, avoid stagnant water in the basin, otherwise it will rot root.

6. Hydrangea flowers become cooler after September, so the amount of water should be reduced gradually. Frosts Descent moved into the room, the room temperature should be kept at about 4 degrees. Remove the leaves before entering the room to avoid rotten leaves. It is appropriate to put the plant in the sunny place indoors in winter, and it is appropriate to leave the room after Grain Rain in the second year. Hydrangea is an ideal potted flower for easy management and cultivation because of its extensive management and few diseases and insect pests.