What fertilizer is best on azaleas, and what is the best fertilizer for azaleas

Fertilization should be mastered thin fertilizer diligently, can be light, and apply organic compound fertilizer on the potting soil once a month. Potassium dihydrogen phosphate was sprayed every 10 days for extra-root fertilization. Water at the right time, and you can also add vinegar to the water to increase acidity.

Timely thinning of buds and leaves, remove part of the flower buds and leaves that have grown too much and too densely, so that the air can circulate and nutrients will be concentrated in the flower buds. After the flower buds are formed, it is necessary to increase the nutrients and apply more phosphorus and potassium fertilizers in an appropriate amount, otherwise the flower buds will be transformed into leaf buds.

The main reasons for the loss of leaves and non-flowering of azaleas are: too strong direct light in summer, severe cold and frostbite, too much watering, too much fertilization, too long time indoors, poor air circulation or dark and damp places, drenched acid rain, etc., so these situations should be avoided during the maintenance process.

Turning over the pot and changing the soil, do not need to be carried out every year, generally once every 2 to 3 years, try to damage the roots, the time should be after the flower or autumn, and spray Tobuzin at the same time to prevent diseases.

The insect pests of azaleas are mainly red spiders, aphids, etc., which can be sprayed with pyrethroids, etc., and the effect is better, such as not dying after three days, spray again. The disease is mainly melanoma, which is caused by a stuffy environment and lack of light, and measures can be taken to promote air circulation on the one hand, and spray Bordeaux liquid and carbendazim on the other hand.

The flowers of azaleas are more bright and beautiful, and the flower color is more attractive, so when the azalea blooms or before it blooms, it needs nutrients to produce more beautiful flowers, so what fertilizer is good for azaleas? Just take you to understand what fertilizer is best for azaleas, and the black mountain soil is especially suitable for plant growth.

Soil fertilizer suitable for rhododendrons.

Black Mountain soil: To fertilize azaleas, the best fertilizer is the best black soil formed by the accumulation and decay of dead branches and leaves, black soil fertilizer has acidic, black-brown, loose and other good characteristics, and the aggregate structure is good, aeration and permeability, and humus can be said to be the most suitable soil cultivation for azaleas.

Yellow Mountain soil: Yellow Mountain soil is also one of the soil fertilizers suitable for the growth of rhododendron flowers, but it contains less humus and poor fertility. We can dig the loess in winter, because after a cold winter of freezing, thawing and weathering, it becomes loose, and the pests and diseases are reduced accordingly, which is no more suitable.

Humus soil: humus soil is a kind of soil and dead grass litter layer piled into a mound, watered with manure and urine sealed with mud, so that it is fully fermented and obtained from the fertilizer soil, but this kind of soil can only be used after a year of fermentation, and when it is used, it should be exposed to the sun for several days, crushed, sifted, and removed stones, weed roots and other debris.

Rhododendron fertilization method:

Rhododendron is a fertilizer-loving plant, but it is not tolerant to fertilizer, so it is best to apply thin fertilizer frequently when applying fertilizer, and the method of fertilization is applied by two methods: basal fertilizer and top dressing.

Base fertilizer: The base fertilizer used in rhododendron is hoof nail pieces, bone meal, cake fertilizer, and manure drying, which should be mixed with the soil when applied.

Top dressing: Most of the top dressing applied by azaleas is fast-acting fertilizer, that is, the amount of human manure and chemical fertilizer is small, and the effect is fast. It is best to apply accelerated fertilizer before the rhododendron flowers, to apply phosphorus fertilizer, once every 10 days, 2 3 times in a row.

This fertilizer should not be wasted, it does not cost a penny, and it is best to raise rhododendrons.

1. Suitable soil.

When growing rhododendrons, you need to choose the right soil. Rhododendron is suitable for growing in soil with rich nutrient content and good drainage, so it is best to use humus soil with rich trace element content and loose soil quality when planting rhododendron, and after planting, it is necessary to loosen the soil regularly to improve the air permeability of the soil.

2. Proper nutrients.

Rhododendron has a greater demand for nutrients in the process of growth, and it is also necessary to provide appropriate nutrients for the plant when maintaining the rhododendron to improve the growth rate of the plant. At the same time, it is necessary to pay attention to the fertilization method when providing nutrients for the plants, which can be added directly to the soil or diluted and sprayed on the leaves.

3. Suitable moisture.

Rhododendron is suitable for growing in a more humid environment, so it is also necessary to provide proper water to the plant when caring for the azalea to keep the soil in a moist state. At the same time, when providing water for plants, it is necessary to pay attention to the choice of water source, and generally use river water or well water with rich mineral content to irrigate the plants.

4. Sufficient light.

Rhododendron has a greater need for light during the growth process, so it is also necessary to provide appropriate light for the plant when maintaining the azalea, so that the plant can photosynthesize normally. At the same time, it is necessary to pay attention to the light intensity when providing light to the plants, generally in spring and autumn to provide all day light for the plants, and in the summer to provide shade for the plants.

Rhododendron is one of the representatives of acid-loving plants, the pH value is the best, and the climate is cool, humid and well-ventilated.

The growing temperature is 13 to 25 °C, and the relative humidity of the air should be maintained at 60 to 70 during the growing season, and the relative humidity can reach about 80 during flowering.

Rhododendron likes light, but avoid direct sunlight, increase shading appropriately in spring and autumn, and reach about 70 shading in midsummer, and often spray on the leaf surface.

Water to humidify, cool, in summer to put the rhododendron outdoors maintenance, to facilitate ventilation. Rhododendron likes light fertilizer, but avoid thick fertilizer, the growth period to thin fertilizer diligently, the best is farmhouse fertilizer, such as soybean cake water, horseshoe palm water and all kinds of vegetables, chicken feathers, fish offal and other sundries soaked and fermented liquid fertilizer can be applied.

Rhododendron is fibrous root, slender and weak, so can not use clay heavy soil, like loose, permeable, good air permeability acidic soil, the north can be used mud mountain, fall.

Leaf pine leaf soil, or artificially prepared culture soil and other humus soils. After flowering, it is necessary to trim and prune, in order to make the flower more beautiful and control the flowering period.

The next annual shoots can also be propagated by cuttings.

If the rhododendron has yellow leaves on the front and red insect spots on the back, it is a red spider damage, and it will fall defoliation in serious cases, and 40 of trichlorodiol can be used.

1000 times liquid spray, once every seven days, three times in a row can be removed. If the leaf surface is yellow and the leaf veins are still green, it is a symptom of iron deficiency, and sulfur can be sprayed once every ten days or so.

Acid ferrous solution, the concentration does not exceed 5, with vinegar and fermented rice water also has a certain effect. In addition, there are other symptoms such as: leaves are not light.

Ze, reddish-brown dry tip and gradually expand, caused by strong direct light, poor ventilation, high temperature, can improve the environment to prevent and control. If you have brown spots.

Diseases can be prevented and treated with chlorothalonil, carbendazim, killable, methyl tobuzin, etc. There are also leaves that are yellow or still very green, but gently touch the branches and leaves.

It fell with a bang, and soon the light fell, which was too dim and stuffy; Visible conditions caused by too weak light, too dry air, air pollution, etc.

Prevention and cure. Rhododendron lacks water and wilts and hangs low, the new leaves are tender and white and yellowish for the long-term water bubble root caused, if the leaves wilt, but still green and not easy to fall, there are also for.

Caused by a large amount of water. The leaves have black spots of uneven size or patches, mostly caused by black spot disease, pathogens, mostly due to large water, poor ventilation, and too weak light.

Raising rhododendrons, it doesn't matter if you choose the wrong planting material, and it is not a big problem to use these "water and fertilizer" well.

Rhododendron is best to apply growth fertilizer, flower-promoting fertilizer, and green leaf fertilizer.

1. Growth fertilizer

Rhododendron has a growing season, generally in autumn and winter, after flowering, it will enter a stage of growing new shoots and leaves, at this time we try to use some balanced fertilizer for him. Nitrogen promotes growth, phosphorus promotes flowering, potassium promotes the development of roots, we only need to use a little multi-element nutrient solution, or a multi-element compound fertilizer, regularly and quantitatively for him, the concentration is not too high, so that the azaleas we raise will get sufficient nutrients.

2. Promote flowering fertilizer

Rhododendron generally blooms in autumn and winter, its flower bud differentiation is generally in the spring after the growth is complete, in the summer its flower buds will gradually grow, most of the autumn flower buds will be completely popped up, so we should add him a phosphorus and potassium fertilizer when we reach the flowering period. Phosphorus and potassium fertilizer is used continuously until its flowers are all about to open and stop directly, and then use some multi-element for him after flowering, which can make it grow quickly.

3. Green leaf fertilizer

In the process of raising rhododendrons, you will find that it is easy to have new leaves yellowing, at this time in the process of our maintenance, whether it is growth or flowering, we must use a fertilizer for him, ferrous sulfate. Ferrous sulfate can regulate the acidity of the soil, and can supplement the rhododendron with iron, and the rhododendron can absorb enough iron in the acidic soil, and the leaves will not turn yellow if the iron is sufficient.

Growth habits of rhododendrons

1. Soil

Rhododendron is sensitive to soil, so if you want to plant azaleas well, you must prepare the right soil. It prefers slightly acidic soils and cannot be grown with alkaline soils. In addition, it must be fertile and loose, and humus can be used with cinder, which is both breathable and rich in nutrients.

2. Illumination

Rhododendron grows just by making sure it is exposed to astigmatism and not leaving it in bright light, especially in the summer. If the light is too strong, it is easy to affect its growth, especially during the flowering period.

3. Water and fertilizer

Rhododendron prefers a moist environment, but does not allow the soil to accumulate water. The flowering rhododendron has a high demand for nutrients, and it should be given fertilizer with high phosphorus and potassium content every ten days; After the flowering period has passed, it is sufficient to use one or two diluted compound fertilizers every month.

Five kinds of fertilizers that azaleas love.

1. Bean cake, sesame cake, rapeseed cake, etc.

Add rapeseed cake, sesame cake, and bean cake to the water, soak it in water for 3 4 days, and then put it in a fully sealed space of 25 30 days, and store it for 15 days to make it fully rotten and rotten, and then add water to dilute it, which is one of the favorite fertilizers of rhododendrons.

2. Grass juice water.

To make grass juice water, it is necessary to use fresh and tender grass or vegetable leaves, grass juice water is rich in mineral nutrients, and the grass juice water is used as water to water the azaleas, which can make the azaleas grow more lush.

3. Fishy water.

The method of making fishy water is a little complicated, but it is not difficult to grasp the main points. Collect some aquatic fish, seal them in a small tank, do a good job of sealing, and ferment for more than half a year before use. Water should be added when applying, and the concentration should be diluted to 3% to 5%.

This fertilizer is rich in phosphorus and can brighten up the flowers and leaves, but remember to rinse with water every other day.

4. Alum fertilizer water.

What is the best fertilizer to use to raise rhododendrons, all flower friends must remember that azaleas do not like thick fertilizer, raw fertilizer, so when fertilizing rhododendrons, remember to "thin fertilizer diligently, rather less than more". Rhododendron can be diluted with alum fertilizer water and water during the growth period, and the effect is most significant when fertilized once every half a month.

5. Nitrogen and phosphorus combined fertilizer.

The gestation bud period after the azalea withers is very fragile and susceptible to various external factors, so it should be taken care of at this time. It is necessary to mix the fertilizer combined with nitrogen and phosphorus and apply it 2 or 3 times every half month, and the fertilizer concentration should not be too high, otherwise it may cause the flower buds to wither and not bloom.

Rhododendron fertilization method:

First, the base fertilizer. The base fertilizer is generally incorporated into the substrate when the rhododendron is planted or repotted, and the compound fertilizer with a balanced ratio of nitrogen, phosphorus and potassium is usually selected. The fertilizer should not be too thick, because the plants at this time need to slow down the seedlings, and the thick fertilizer will be detrimental to their growth, so it should be diluted before use.

2. Fertilize before flowering.

Before flowering, adequate fertilizer can increase the number of flowers and will also help with flowering quality. At this time, the fertilization is mainly phosphate fertilizer, and a small amount of potassium fertilizer is added to improve the resistance of the plant. Applying less or no nitrogen fertilizer, otherwise it will make it grow and hinder flowering.

3. Fertilization during flowering.

Fertilization is generally not required during flowering, when it absorbs nutrients from the soil and requires less additional fertilizer. Improper fertilization can lead to shortened flowering and even wilting of flower buds.

Fourth, fertilize after flowering.

After flowering is another important time period for fertilization. Since rhododendron flowering consumes a lot of nutrients, it needs to be supplemented with a certain amount of nitrogen fertilizer. In the summer, it enters a semi-dormant period, at which point no fertilization is required.

But in August-September, it will resume growth, at which point phosphorus fertilizer should be applied every 15 days. Stop fertilizing after winter.

Key points of fertilizer for Yingshan red.

Rhododendron, like fertilizer and avoid thick fat, can be used as flower top dressing compound fertilizer, but not too much. Due to the high temperature in summer, the rhododendron grows slowly, and the demand for fertilizer is small, so the top dressing can be stopped to avoid fertilizer damage, which is not good for plant growth.

What fertilizer is good for Yingshanhong.

When planting rhododendrons, basal fertilizers can be applied, including bean cakes, vegetable cakes, pig, chicken, and rabbit manure. The fertilizer must be fully rotted, and thick fertilizer or raw fertilizer cannot be applied, otherwise it will burn the roots, resulting in poor growth of the planting bench.

What fertilizer can be poured to bloom more.

Phosphorus and potassium fertilizers can be applied before the flowering of rhododendrons to promote flower bud differentiation. The simplest is to water the flowers with potassium dihydrogen phosphate, one gram per catty.

Fertilization time.

In late winter and early spring, you can apply organic fertilizer as a base fertilizer on the soil of rhododendrons. April-May is its flowering period and consumes a lot of nutrients. At this time, you can apply fertilizer once every half a month.

Growing stops in summer and fertilization should be stopped. The last top dressing can be applied in late autumn, but it is generally not suitable for fertilization after winter.

Fertilization method of Yingshan red.

Rhododendron grows vigorously in spring and autumn, and pancake fertilizer can be applied every 10 days. In autumn, more phosphorus and potassium fertilizers can be applied, and thin fertilizers should be applied frequently. In addition, tap water cannot be used directly for fertilization, but can be acidified by adding ferrous sulfate or vinegar, and then applied when the pH value reaches about 6.