How to Grow Bamboo Outside

Bamboo, a versatile and fast-growing plant, can add a touch of elegance and privacy to any outdoor space. Growing bamboo outside is not only rewarding but also quite straightforward. With the right conditions and care, you can enjoy lush, green bamboo in your garden or yard. Let's delve into the world of bamboo cultivation, exploring the ideal conditions, planting techniques, and maintenance tips to help your bamboo thrive.

Before we dive into the specifics, it's essential to understand that bamboo is not a typical plant. It belongs to the grass family and grows rapidly, with some species capable of growing up to four feet in a single day. This unique growth habit requires specific considerations when growing bamboo outside.

Choosing the Right Bamboo Species

Selecting the appropriate bamboo species is crucial, as different varieties have distinct growth habits, sizes, and appearances. For instance, running bamboo spreads aggressively through rhizomes (underground stems), while clumping bamboo grows in tight, compact groups. Consider the space available, the desired height and spread, and the hardiness zone of your region when choosing a bamboo species.

Some popular outdoor bamboo species include:

• Phyllostachys edulis (Moso Bamboo) - A running bamboo with tall, sturdy canes and a hardiness zone of 7-10.
• Fargesia rufa (Dragon Head Bamboo) - A clumping bamboo with attractive red culms (stems) and a hardiness zone of 6-9.
• Bambusa vulgaris (Common Bamboo) - A running bamboo with green canes and a hardiness zone of 9-11.

Understanding Bamboo Growth Habits

Familiarizing yourself with bamboo's growth habits is essential for successful cultivation. As mentioned earlier, bamboo can be either running or clumping. Running bamboo spreads rapidly through rhizomes, forming extensive root systems that can be invasive if not contained. Clumping bamboo, on the other hand, grows in tight groups and is less aggressive.

Bamboo also exhibits unique growth patterns throughout the year. New shoots emerge in early spring, followed by rapid growth during the warmer months. In fall and winter, bamboo enters a dormant phase, during which it focuses on storing energy for the next growing season.

Preparing Your Garden for Bamboo

Before planting bamboo outside, it's crucial to prepare your garden to provide the ideal growing conditions. Bamboo thrives in well-draining, fertile soil with a pH between 5.0 and 7.0. Amend heavy clay soils with organic matter, such as compost or well-rotted manure, to improve drainage and aeration.

Bamboo also requires ample space to grow and spread. Ensure you have enough room for the mature size of the bamboo species you've chosen. Additionally, consider the light requirements of your chosen bamboo variety, as some prefer partial shade while others thrive in full sun.

Planting Bamboo Outside

Once you've selected the appropriate bamboo species and prepared your garden, it's time to plant your bamboo. The best time to plant bamboo is in early spring or fall, when temperatures are mild, and rainfall is abundant. This gives the bamboo time to establish a strong root system before the stress of summer heat or winter cold.

Follow these steps to plant bamboo outside:

1. Dig a hole that's at least twice as wide and just as deep as the root ball of your bamboo plant.
2. Gently remove the bamboo from its container, ensuring not to damage the roots.
3. Place the bamboo in the hole, ensuring the root flare (where the roots meet the stem) is level with the ground.
4. Backfill the hole with native soil, gently firming it around the roots to eliminate air pockets.
5. Water the newly planted bamboo thoroughly, ensuring the soil is evenly moist but not waterlogged.

Containing Running Bamboo

As mentioned earlier, running bamboo can be invasive due to its aggressive rhizome growth. To contain running bamboo, install a barrier around the planting area. This can be made of various materials, such as metal, plastic, or even concrete. The barrier should be at least 24 inches deep and extend at least 12 inches above the ground to prevent rhizomes from spreading.

Alternatively, you can use a root barrier fabric, which is a flexible material designed to contain spreading plants. Install the fabric around the planting area, ensuring it extends at least 12 inches above the ground and is securely anchored.

Mulching and Watering Bamboo

Apply a 2-3 inch layer of organic mulch around the base of your bamboo plants to help retain soil moisture, suppress weeds, and regulate soil temperature. Ensure the mulch doesn't touch the stems of the bamboo to prevent rot.

Water bamboo consistently during the first growing season to help it establish a strong root system. Once established, bamboo is relatively drought-tolerant, but it's essential to maintain consistent moisture, especially during dry spells. Water your bamboo deeply once a week, ensuring the soil is moist to a depth of at least 6 inches.

Maintaining and Pruning Bamboo

With proper care, bamboo requires minimal maintenance. However, regular pruning can help control the plant's size, shape, and overall health. Prune bamboo in late winter or early spring, just before new growth begins.

Remove any dead, damaged, or crossing canes at their base using clean, sharp pruning shears or loppers. For larger canes, you may need to use a saw. To control the plant's size, you can also cut the culms (stems) back to the desired height, ensuring you leave at least one-third of the culm's height to maintain the plant's stability.

Fertilizing Bamboo

Bamboo is generally quite hardy and can tolerate a wide range of soil conditions. However, applying a balanced, slow-release fertilizer in early spring can provide an extra boost of nutrients to support healthy growth. Choose a fertilizer with an NPK ratio of 10-10-10 or 20-20-20, and follow the package instructions for application rates.

Alternatively, you can apply a layer of compost or well-rotted manure around the base of your bamboo plants in early spring. This will provide a slow-release source of nutrients as the organic matter breaks down.

Winter Care for Bamboo

Most bamboo species are quite hardy and can tolerate freezing temperatures. However, young plants or tender species may require additional protection during winter. Apply a 2-3 inch layer of mulch around the base of young bamboo plants to help insulate their roots and protect them from extreme cold.

In areas with heavy snowfall, gently brush snow off the bamboo canes to prevent them from breaking under the weight. If you live in an area with extreme cold, consider providing additional protection, such as wrapping the canes in burlap or frost cloth.

Growing bamboo outside can be a rewarding experience, as you watch your plants thrive and create a lush, green oasis in your garden. By selecting the right bamboo species, preparing your garden, and providing proper care, you can enjoy the beauty of bamboo for years to come. Embrace the unique growth habits of this versatile plant, and let it add a touch of elegance and privacy to your outdoor space.