What to do when bamboo leaves turn yellow? Grow them this way for more vigor

Bamboo is the collective name for plants of the genus Bambusoideae in the grass family. Along with plum, orchid and chrysanthemum, it is known as one of the Four Gentlemen, and along with plum and pine it is known as one of the Three Friends of Winter. Through the ages, countless scholars and literati have loved and praised bamboo. However, during cultivation, symptoms of yellowing bamboo leaves sometimes appear. So how do you grow bamboo for vigor? What should you do when the leaves turn yellow?

I. What types of bamboo are there?

1. Culm-form types: Culm-form bamboos include Buddha Belly Bamboo (Bambusa ventricosa), Dwarf Buddha Belly Bamboo, Giant Buddha Belly Bamboo, Square Bamboo (Chimonobambusa quadrangularis), and Qiong Bamboo (Qiongzhuea tumidinoda).

2. Culm-color types: Culm-color bamboos include Black Bamboo (Phyllostachys nigra), Mottled Bamboo, Golden Bamboo, Yellow-culm Black Shoot Bamboo, and Yellow-striped Bamboo.

3. Leaf-color types: Leaf-color bamboos include White-striped Yin-Yang Bamboo, Fernleaf Bamboo (Shibataea kumasaca), Yellow-striped Golden Bamboo, and Indocalamus.

4. Plant-form types: Plant-form bamboos include Phoenix-tail Bamboo (Bambusa multiplex), Small Weeping Bamboo, and Olive Bamboo.

II. How do you grow bamboo for vigor?

1. Soil: Bamboo prefers acidic or neutral soil and dislikes heavy clay and alkaline soil. You can use fertile, loose sandy soil, or mix farm soil with leaf mold and fine sand to increase the soil's air permeability.

2. Pot: Bamboo is a shallow-rooted plant, so you can choose a pot with a shallower mouth. After planting, add some decorative stones or moss to enhance the ornamental value of the bamboo, making it look fresher and more elegant.

3. Watering: Bamboo likes moisture and fears waterlogging. Newly transplanted bamboo should be watered thoroughly first. In daily care, do not water too much. In summer, water every day and spray the leaves; in winter, reduce watering to prevent frost damage.

4. Fertilizing: When planting bamboo, mix organic fertilizer into the potting soil. After normal growth, apply appropriate supplementary fertilizer, following the principle of light and frequent feeding. In spring and summer, apply 0.5% urea or 1.0% compound fertilizer with water.

5. Pests and diseases: The main insect pests of bamboo include bamboo aphids and bamboo scale insects, which can be sprayed with insecticide. The main diseases include sooty mold and witches' broom, so management should be strengthened and diseased plants pruned promptly.

6. Pruning: Bamboo grows rather quickly, so it should be pruned in good time: remove old growth and keep young, remove dense growth and keep sparse, remove weak growth and keep strong. When repotting each year, remove dead branches appropriately, which keeps the plant form graceful.

III. Do this when bamboo leaves turn yellow!

During the growth of bamboo, yellowing leaves often occur, mostly caused by imbalanced cultivation management. Too much or too little water, too strong or too weak sunlight, and too much or too little fertilizer can all cause leaf yellowing, but the yellowing appears differently. Observe carefully, analyze the cause, and correct it.

1. Water yellowing

Young leaves turn dull yellow and lose their luster, while old leaves show no obvious change; the stems are thin and yellow-green, and new shoots shrivel and stop growing, indicating overwatering. Remove the plant from its pot, place it in a ventilated, shady spot to let the root ball dry out on its own, then put it back in the pot.

2. Drought yellowing

Yellowing from lack of water differs from yellowing from too much water. Drought-induced yellowing shows the leaf tips or edges withering and drying, with old leaves turning yellow and dropping from the bottom upward, while new leaves grow relatively normally. Just be sure to water thoroughly and adequately.

3. Scorch yellowing

Strong direct sunlight on some shade-loving plants (such as spider plant and hosta) easily causes the leaf tips and margins to wither, with yellow spots appearing on the sun-facing parts of the leaves. Simply move them to a shady spot.

4. Light-deficiency yellowing

When kept in a shaded environment for a long time, the leaves cannot get enough sunlight and cannot form chlorophyll, so the whole plant's leaves turn yellow and then drop. Supplementing light can prevent this problem.

5. Fertilizer yellowing

Yellowing caused by too much fertilizer or too high a concentration shows as dry brown tips on new leaves; generally the leaf surface is thick and lacks luster, and is uneven and not spread out, while old leaves turn scorched yellow and drop. Stop fertilizing immediately; in severe cases, flush out some of the fertilizer with plenty of water.

6. Nutrient-deficiency yellowing

This shows as young leaves becoming lighter in color, turning yellow or pale green, while old leaves remain relatively normal or gradually turn from green to yellow. Check the potting soil; if it has become dry and compacted, replace the soil. Usually apply light fertilizer frequently and water occasionally with alum water (lucky bamboo is a foliage plant, so it should be given fertilizer mainly based on nitrogen).