Kalanchoe sheds leaves and doesn't bloom. Here's how to grow it so it won't get sick again.

1. Yellow leaves

Natural metabolism

The leaves at the bottom of the Kalanchoe will naturally turn yellow, but it usually does not affect the leaves at the top.

Solution: For aesthetic reasons, it is usually sufficient to cut off the yellowing leaves.

Sun exposure

If the leaves of the Kalanchoe begin to dry up from the edges, it may be due to excessive exposure to the sun.

(Source: Yuhuagu Forum)

Solution: Place the Kalanchoe in a cool place (especially at noon in summer), or build a shade shed to block out the light, then water it appropriately and cut off diseased leaves.

Overwatering

If the leaves become soft first and then turn yellow, it may be due to waterlogging, that is, too much water.

Solution: You can take the Kalanchoe out to bask in the sun, wait for the leaves on the edges to dry up, and then use scissors to cut off the dry parts. The dead leaves will heal themselves after a few days, and new buds will slowly grow out.

Overfertilization

Excessive fertilization can also cause yellowing of leaves. If a large amount of concentrated fertilizer is applied at one time, the Kalanchoe will either have a large number of yellow leaves or become listless due to the high concentration of the soil solution.

Solution: Apply thin fertilizers frequently, mainly compound fertilizers during the growing season. You can buy some water-soluble liquid fertilizers and use them once every 2 weeks while watering. Don't make it too thick.

Maintenance Tips

Although Kalanchoe loves light, it cannot withstand excessive exposure to the sun, so you should pay attention to shading, especially in summer.

The leaves of Kalanchoe are fleshy and can tolerate drought but not waterlogging. During the growing period, water thoroughly every 3 to 4 days to keep the soil in the pot slightly moist. When the temperature is low in winter, you should control watering and water it once every 7-8 days.

2. Leaves grow white hair

powdery mildew

The white hairs on Kalanchoe are caused by a fungal infection, also known as powdery mildew, which mainly attacks the leaves and stems. The affected parts appear white powdery and are difficult to wipe off with hands or a brush. The leaves of the affected plants become weak and stop growing, looking sick and crooked. This is a very common disease of Kalanchoe, which is most prevalent in winter and is mostly caused by poor ventilation.

(Author: yig987 Source: Kalanchoe Bar)

Solution: Mix sulfur powder with water into a paste, apply it to the affected leaves and stems with a soft-bristle brush, and sprinkle some sulfur powder on the surface of the substrate, and combine it with watering to promote root absorption. Or apply other pesticides specifically for treating powdery mildew.

If the symptoms are serious, remove the diseased leaves, cut off the rotten branches, and re-graft.

Maintenance Tips

Try to keep the leaves dry and the pots well ventilated, especially do not spray water in the evening, which will cause water to remain on the leaves overnight. If there are water droplets on the leaves, use a paper towel to absorb them or use a hair dryer to blow them away.

(Author:AgentAzrael Source:HuaBa)

Prevention is the key, spray sunscreen and disinfectants regularly. If wounds or ulcers appear on the plants accidentally, apply wood ash, sulfur powder, or nail support as soon as possible.

Once discovered, diseased leaves and branches should be removed as soon as possible to reduce the amount of pathogens, and at the same time, the opportunity should be seized to spray pesticides.

3. Drop leaves

Insufficient light

If the Kalanchoe is not exposed to enough light during daily care, not only will the branches be weak and slender, the leaves thin and the plant shape ugly, but the number of flowers will also decrease, the color will not be bright, and it will cause a large number of leaves to fall off, losing its ornamental value.

Solution: Move to a balcony or outdoors with sufficient light for maintenance.

Strong light, little water, drought

(Source: Kalanchoe Bar)

Solution: It is recommended to move to a place with scattered light but no direct light, water it frequently, and water it thoroughly each time until the water flows out from the bottom of the pot.

Lack of fertilizer

Solution: Lack of fertilizer, or unbalanced nitrogen, phosphorus and potassium nutrients in the fertilizer. It is recommended to buy general 1:1:1 flower fertilizer for fertilization.

4. Root rot

Overwatering

Solution: Move the flowers to the sun to dry. If the situation is serious, dig out the soil, ventilate and dry it, and then put it back into the pot.

Soil compaction

The soil is heavy and compacted, with little or no air in it. One is that the water used for watering flowers is too hard, that is, it contains more calcium and magnesium ions; the other is that chemical fertilizers are used improperly.

(Source: 360doc personal library)

Solution: Change the soil, wash the roots, and remember to loosen the soil frequently.

Container issues

The flowerpots are made of ceramic or plastic, which are not ventilated. If the plants are planted too deep, the roots will have difficulty breathing.

(Author: Ruan time63 Source: Huaba)

Solution: Dig it out and cut off the rotten roots. After disinfecting the wound, change the pot and replant it.

Maintenance Tips

The water used for watering flowers should be dried in the sun for a day before use. Don’t water unless the soil is dry, and when you do, make sure to water thoroughly.

5. No flowering

illumination

Solution:

Kalanchoe prefers an environment with plenty of sunlight. It should be avoided from strong sunlight at noon in midsummer and can be placed in a sunny place at other times. It needs at least 4 hours of direct sunlight a day to grow healthily.

In order to make the plants bloom evenly, you should pay attention to changing the direction of the flower pots frequently so that the plants can receive light evenly. On the balcony of a building, the flower pots should be rotated 180 degrees every half a month. Although it can grow in semi-shade, its stems are thin, its leaves are thin, and its flowers are few and pale in color, and it is far less lush than in sunny places. If it is too shady, it will not only easily lose leaves but also have no flowers.

nutrient

Solution:

Kalanchoe likes fertilizer. The flowering period of Kalanchoe is long, so it is necessary to break the rule of not fertilizing during the flowering period and apply dilute nitrogen, phosphorus and potassium fertilizers or 0.2% potassium dihydrogen phosphate solution once a month to prevent the flowers from becoming smaller and lighter in color due to lack of fertilizer in the later period.

From the time when Kalanchoe is brought indoors at the time of frost to October of the following year, it is the late differentiation and peak flowering period of Kalanchoe's flower buds, so it has a great demand for fertilizer. Before flowering, fish fertilizer mainly composed of phosphorus and potassium should be applied once a week to promote the differentiation of flower buds. During the flowering period, it is best to apply quick-acting potassium dihydrogen phosphate, with a concentration of 2%, once every 10 days.

Maintenance Tips

If you want the Kalanchoe to bloom more, you need to pay attention to:

1. The flower pot should not be too large. The larger the flowerpot, the more space there is, allowing the roots to grow and spread freely, consuming a lot of nutrients unnecessarily. This results in sparse and narrow leaves, few flowers and small flowers.

2. The plant should not be too tall. After a period of dormancy in the hot summer, Kalanchoe grows vigorously in autumn. Extensive pruning should be done before the beginning of autumn to make the plant short and strong and promote branch development. Combined with fertilization, ensure the good growth of the plants. The more branches there are, the more flower heads there will be in the future.

(Author: danqin Source: Huaba)

3. Fertilizer should not be too concentrated. Kalanchoe is a plant with medium fertilizer requirements. It should be applied with thin layers of fertilizer frequently, and topdressing should be mainly carried out during the bud formation and flowering stages.

Bone meal (80 g/bag) and potassium dihydrogen phosphate (30 g/bag) bought from the flower market are generally diluted in 1.25-liter beverage bottles in about one-quarter or one-fifth of the amount respectively to make liquid fertilizer. Spray potassium dihydrogen phosphate on the front and back of the leaves, and combine it with bone meal and potassium dihydrogen phosphate for watering, and you will get the effect of branches full of flower buds.

I hope your flowers will grow healthily.

The flowers are lush and the leaves are green!

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