When something goes wrong with your flowers, you can tell at a glance by looking at the leaves and stems
When a person is sick, their whole body feels awful. When a plant is sick, its "body" also sends out signals. Once you understand the signals, you'll know what disease it has, and then you can treat it accordingly! Learn to observe the following "symptoms," and when something goes wrong with your flowers, you'll never have to guess blindly again!
1
Looking at the leaves
Spots or blotches appear on the leaves
Possible causes:
1. If the spots or blotches on the leaves become wrinkled and brown, it may be caused by lack of water.
2. If the spots soften and turn dark brown, it may be caused by watering with water that is too cold, water splashing onto the leaves, chemical damage, sunscald, or pests and diseases.
3. If the spots are moist and blistered, or dry and sunken, this is caused by disease.
Sudden leaf drop
If the leaves wilt without fading in color and suddenly drop off, it is often because the plant has suffered a sudden shock.
Such as a sudden sharp rise or fall in temperature, a sudden increase in daytime sunlight intensity, or the blowing of strong cold wind, or the soil becoming excessively dry.
The top leaves are small and yellow, with green veins, and in severe cases brown spots appear
For acid-loving plants and plants sensitive to calcium, this phenomenon easily occurs in the north when watering with water that contains a lot of calcium (hard water) and using potting soil that contains relatively more calcium.
Leaves curl and drop off
Possible causes:
Caused by low temperature, overhead spraying, or cold drafts.
Leaves turn yellow and drop off
Possible causes:
Occasional dropping of old leaves is normal. A large number of leaves turning yellow and dropping at the same time indicates overwatering, a sudden drop in indoor temperature, or localized cold air convection.
Leaves develop damaging splits and holes
Possible causes:
The usual causes are: mechanical damage from pets or people, injury to newly sprouted leaf buds, or insect damage.
Leaves wilt
Possible causes:
1. Dry soil.
2. Too much watering or a blocked drainage hole at the bottom of the pot, causing root rot.
3. Sunlight that is too strong (especially at noon), dry air, temperature that is too high, roots that have filled the pot, or pest damage.
New plants drop leaves
Possible causes:
For a plant that has just been repotted, or a newly purchased plant moved from one room to another room with slightly different conditions, dropping 1-2 leaves is normal. Note: when repotting, use a slightly larger pot; when bringing a plant home after buying it, carefully protect it and gradually move it from a shady spot to a bright spot, minimizing shock to the plant.
Bottom leaves dry up and drop off
Possible causes:
1. Lack of light.
2. Temperature too high.
3. Lack of water.
Leaf tips and leaf margins turn brown
Possible causes:
1. If only the leaf tips turn brown, it may be caused by hot air, or it may be abrasion; leaf tips resting against a wall or window can also turn brown.
2. Yellowing or browning of leaf margins has many causes: overwatering, lack of water, insufficient light, light that is too strong, temperature too high or too low, overfertilizing, air humidity too low, or ventilation too strong. To confirm the cause, you also have to consider other factors and symptoms.
2
Looking at the flowers
Flower buds drop off
Possible causes:
The same causes that lead to leaf drop can also cause flower buds to drop. The most common causes of flower bud drop are dry air, lack of water, little light, a change in the pot's position before flowering, or insect damage.
Flowers wither quickly
Possible causes:
The most likely causes are lack of water, dry air, light that is too weak, or temperature that is too high.
Failure to bloom
Possible causes:
If a plant has grown to a certain size and reached blooming time but does not bloom, there are several possible reasons.
1. The most likely cause is light that is too weak, or the number of light hours per day being wrong (photoperiod).
2. It may be too much nitrogen fertilizer, dry air, pest or disease damage, or improper repotting (some plants need their roots to fill the pot before they can bloom, so they do not need repotting).
3
Looking at the stems
Stems and leaves rot
Possible causes:
Poor growing environment, caused by disease. The cause is overwatering in winter or water accumulating on the leaves at night.
Stems thin and elongated, leaves small and pale
Possible causes:
1. If it occurs in winter or early spring, it is because the temperature is too high, the light is too weak, and the growing medium is too wet.
2. If this phenomenon appears during the growing season, it may be caused by lack of fertilizer or insufficient light.
4
Looking at the pot
Moss grows on the sides of a clay pot
Possible causes:
There is a problem with watering, usually overwatering or a blocked drainage hole at the bottom of the pot, causing the potting soil to be too wet or waterlogged.
White alkaline deposits appear on an unglazed clay pot
Possible causes:
Watering with hard water or overfertilizing.
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