How to Grow Bamboo Plants Indoors

There are hundreds of bamboo species you can grow indoors, ranging from small, colorful plants placed on tables to towering plants positioned in central areas. Bamboo plants often face challenges when grown indoors, so they require special care. Monitoring moisture levels is crucial to ensure the plants receive enough water without the risk of overwatering.

Choose a wide and shallow pot. Select a pot with a width at least twice the size of the root ball, or ensure the roots are at least 5 cm away from the edge of the pot. Good drainage is essential for the survival of most bamboo species, so make sure the drainage holes at the bottom of the pot are adequately sized.

• Use a plastic liner to prevent roots from growing sideways if using a cement pot (which can harm the plant) or a wooden pot (which improves the pot’s durability by isolating it from moisture).

Consider using a humidity tray. Bamboo plants prefer humid conditions, which can make indoor planting a bit tricky. A simple way to add moisture to the air without causing the soil to become waterlogged is by placing a shallow water tray underneath the plant pot. Here are two methods for this:

Use well-draining soil in the pot. Bamboo requires soil that is either light and loose or moderately compact: it must drain quickly but retain some moisture. You can use standard potting soil or create your own mixture with ⅓ compost, ⅓ perlite (or washed sand), and ⅓ sphagnum moss (or well-rotted manure). Most bamboo species are adaptable to a variety of well-draining soils, so the exact composition isn’t crucial.

• High-quality garden soil can be substituted for potting mix. Avoid using heavy clay soil as it drains poorly and is difficult to amend.
• Bamboo grows best in slightly acidic soil, with a pH between 5.5 and 6.5, though it can tolerate up to a pH of 7.5. Most soils fall within this pH range.

Plant bamboo at a shallow depth. Place the bamboo stem and the top of the root ball just above the soil surface to prevent rot. Firm the soil to remove air pockets, then water the plant thoroughly.

• If the roots are tangled, use a clean knife to cut them away from the pot's edge. The plant may have difficulty absorbing water, so soak the root ball (avoid soaking the stem) in water for about 20 minutes before planting.

Water the plant carefully. This is the trickiest part of growing bamboo indoors, as the plant needs a lot of water but is also prone to damage if overwatered. Start by watering until you see a little water draining from the bottom of the pot. Let the top 5-7.5 cm of soil dry out before watering again.

• If the topsoil dries quickly, dig down to a depth of about 10 cm to check for moisture. The soil at this depth should always stay slightly moist, especially during the first three months after planting.

Maintain humidity in the air. Most bamboo species thrive in humid environments, especially during hot weather. As long as you avoid over-watering, you can help your plant stay healthy using any of the following methods:

• Place the plant pot on a water tray as described earlier.
• Use a spray bottle to mist the leaves every few days.
• Turn on a humidifier in the room.
• Cluster plants together (though be aware this increases the risk of disease spread).

Understand the light requirements of the bamboo species you're growing. If you know the species of bamboo you have, look up specific care recommendations. If the plant requires more light than your local climate provides, consider installing grow lights. If you’re unsure of the species, follow these general guidelines:

Fertilize your bamboo plant. Bamboo grows quickly in large pots and requires additional nutrients to support this rapid growth. A slow-release fertilizer applied early in the growing season will provide a steady supply of nutrients. You can use a balanced fertilizer like 16-16-16 or a nitrogen-heavy formula like 30-10-10. High-nitrogen fertilizers prevent flowering, which can weaken many bamboo plants.

Prune your bamboo regularly. Bamboo species are generally quite tolerant of pruning, so don’t hesitate to shape your plant once it’s established and healthy:

• Trim off yellowed, spindly, or excess stalks at ground level.
• To control height, cut the plant just above a node (where a branch grows).
• Regularly prune branches if you want to limit the plant's growth.
• Remove low-hanging branches to improve the plant's appearance.

Repot or divide the bamboo when it outgrows its pot. Bamboo can grow in two different ways depending on the species. The "running" type sends out long shoots that form new plants, growing in a spiral pattern around a large pot for 3-5 years. The "clumping" type gradually spreads outward and may go six years without needing to be repotted. All bamboo species should be repotted once their roots become cramped.

• To limit growth, instead of digging up the plant, trim about one-third of the root ball and replant it in the same pot with fresh soil.
• You can propagate most bamboo species by cutting sections of the stem and planting them in new pots. This method won’t work for plants with solid or nearly solid stems.

Identifying the causes of leaf drop. It is quite common for bamboo plants to lose leaves when moved indoors or repotted. However, if the new leaves at the tips of the branches still appear healthy, the plant has a good chance of recovery. If these leaves also drop or appear unhealthy, bringing the plant outdoors for a few months (weather permitting) could help it regain its strength. If the plant has been in the same spot for a long time, consider the following factors:

• Temperate species often shed leaves in low light conditions. A dormant period with cold and low light is beneficial for these plants and can reduce leaf drop. The fewer leaves left, the less water the plant needs.
• Many species shed their leaves in spring (or less commonly in autumn) and gradually grow new ones. If the plant has a mix of green, yellow, and new leaves, it’s likely still doing fine.

Dealing with curled and drooping leaves. If the edges of the leaves curl inward, it indicates that the plant needs water. (Photosynthesis requires water, and the plant is reducing this process by avoiding sunlight). If the leaves droop, it may be a sign of overwatering or poor drainage.

• Overwatering is more harmful than underwatering. Waiting until the leaves are slightly curled before watering generally won’t harm the plant.

Addressing yellowing leaves. If bamboo leaves turn yellow outside of the typical dormant season, it could be due to several factors:

• If the leaves seem dry and the tips turn brown or curl up, it suggests the plant needs more water. The roots may be congested and need to be moved to a larger pot.
• Gradual yellowing is often a sign of nutrient deficiency. It’s a good idea to fertilize the plant with a mineral-enriched fertilizer.
• Sudden yellowing after fertilizing may be caused by excessive fertilizer. To resolve this, remove the fertilizer from the pot and flush the soil with water to wash away excess nutrients.

Dealing with pests. Indoor bamboo plants are more susceptible to pest problems, especially in poorly ventilated spaces. If your plant has a minor infestation, wash the leaves with antibacterial soap or spray an insecticide designed for indoor plants. If this method doesn’t work, or if you suspect the plant is diseased, try to identify the problem and handle it as follows:

• Black mold like 'soot' is often caused by insects. You’ll need to eliminate mealybugs and ants.
• Round or scale-like gray/brown spots are usually harmless to the plant. Fungicides from plant shops should take care of the issue.
• Wet, rotting spots are a sign of overwatering but could also indicate a more severe pest problem. Wipe the area dry and treat with insecticides and fungicides.
• White sticky webs may be a sign of spider mites or other pests. You can wash them off with water and use insecticides.
• With over 1,000 bamboo species worldwide, there’s no one-size-fits-all solution. If your bamboo has an issue not described above, consider consulting a local garden center or agricultural office for advice on regional plant diseases.

• Whenever possible, gather specific information about the species of plant you are growing. Some bamboo varieties that do well indoors include Indocalamus tessellatus, Phyllostachys nigra, and Bambusa multiplex.
• Certain bamboo species thrive best when planted with multiple plants in the same pot. They won't grow as successfully if planted alone. However, not all bamboo species behave this way, so researching the different types of bamboo is beneficial.

• Bamboo plant
• A wide pot
• A well-draining soil mix
• Fertilizer (balanced or high nitrogen content)
• Humidity tray, spray bottle, or humidifier
• Pruning shears