At a glance
Most people who buy bamboo fall into one of two camps. They either plant a running bamboo in their border without a rhizome barrier and spend the next five years watching it take over the garden, or they want to grow bamboo and plant something far too tender that dies in its first winter. Both are avoidable. The decisions that matter with bamboo happen before you buy, not after.
Bamboo splits into two fundamentally different types based on how it spreads underground, and which type you plant determines almost everything else about how you manage it. Get the type right for what you want to achieve, and bamboo is one of the most rewarding plants you can grow in a UK garden. Get it wrong and it becomes the kind of mistake that takes a mattock and several weekends to fix.
Clumping versus running bamboo
Clumping bamboos spread slowly outward from a central crown using short, tightly packed rhizomes that move only a few centimetres per year. They are the right choice for most garden situations. They form a neat, expanding clump that can be managed by dividing, stays where you put it, and does not require containment. The genus Fargesia dominates this group in UK horticulture: Fargesia murielae, Fargesia nitida and Fargesia robusta are among the most widely grown and are reliably hardy throughout the UK, including the north.
Running bamboos spread aggressively via long horizontal rhizomes that can travel a metre or more per year and appear at the surface anywhere within their reach. Left uncontained, a running bamboo will colonise borders, emerge under paving, and cross boundaries into neighbouring gardens. Phyllostachys is the most commonly encountered running genus. These are not plants for open borders without containment. With proper rhizome barriers they can be grown successfully, and there are situations where a running bamboo is genuinely the right choice. But it must be a deliberate, managed decision.
Which bamboos grow best in the UK
Bamboo does not struggle in the UK. Most Fargesia species are reliably hardy across the whole country including Scotland and the north of England. Phyllostachys cultivars are generally fine down to around minus 15 degrees Celsius, which covers most UK winters comfortably, though some selections may suffer in particularly exposed or cold sites.
Fargesia murielae flowers once after roughly 80 to 100 years and then dies. The flowering is synchronous, meaning plants grown from the same seed batch flower together. This sounds alarming but in practice is not a crisis. Plants currently on sale are mostly from seed batches that flowered in the 1990s, which means they have the better part of a century ahead of them. Fargesia nitida flowered around 2005, so newer plants from that cycle are also well clear of the next event.
Phyllostachys nigra is one of the most striking bamboos available. The canes start green and darken to near-black over two to three years. It is a running type and needs containment, but in a large container or with a rhizome barrier it is genuinely spectacular. Hardy throughout most of the UK. Phyllostachys aureosulcata ‘Spectabilis’ has bright yellow canes with green grooves, fast-growing once established, and is excellent for large screens in bigger gardens where space and containment allow.
Where to plant bamboo
Most bamboos want a sheltered position with reasonable moisture but without waterlogging. The north of England is fine for established plants of the hardy species, though young plants in their first winter benefit from a thick mulch at the base and some protection from desiccating winds if the site is exposed.
Afternoon shade suits Fargesia particularly well. In hot, dry summers, Fargesia planted in full sun on a south-facing site will curl its leaves in the heat. This is the plant managing water loss and it recovers when temperatures drop or when watered, but it is a sign the plant is not in ideal conditions. A position that gets morning sun and afternoon shade produces the best growth and appearance for most clumping types. Phyllostachys species are generally more sun-tolerant and produce the best cane coloration in good light. The black canes of Phyllostachys nigra colour most intensely in a position with good sun exposure.
Wind is the main challenge in exposed northern gardens. Strong winds desiccate the leaves and damage the canes, and a bamboo repeatedly battered by wind never looks its best. A sheltered position, or planting the bamboo behind an established windbreak, makes a significant difference. On heavy clay, improve drainage before planting by working in grit and organic matter, or plant into a raised bed.
Planting bamboo
Plant in spring or early summer. Bamboo planted in autumn or winter, particularly in the north, can struggle to establish before cold and wind put it under stress. A spring planting gives the plant a full growing season to build root before its first winter.
Prepare the planting hole generously, at least twice the diameter of the root ball and deep enough to accommodate the roots without bending. Bamboo is fibrous-rooted and does not need enormous depth, but lateral space is important. Work in a good quantity of well-rotted organic matter. Plant at the same depth as it was in the pot. Do not bury the crown.
Rhizome barriers – containing running bamboo
If you want to grow a running bamboo in a border without it spreading, a rhizome barrier is the practical solution. This is a sheet of high-density polyethylene installed vertically around the planting area like a buried wall. The barrier prevents rhizomes from extending beyond it.
An alternative to a rhizome barrier for containing running bamboo is growing it in a large container. A 60 to 80 litre container will accommodate a large running bamboo for several years and gives complete control. The plant will need regular watering and occasional division when it outgrows the pot.
Caring for established bamboo
Established bamboo is low-maintenance if you plant the right type in the right place. Fargesia clumps need almost no attention beyond an annual clear-out of dead canes. Running types need annual rhizome checks at the barrier perimeter.
Feeding makes a difference, particularly in the first few years. Bamboo is a grass and responds to nitrogen. A balanced general fertiliser applied in spring, or liquid feeds through the growing season, produces noticeably stronger cane production. Do not overfeed. Excess nitrogen on plants going into autumn produces lush growth that is more prone to frost damage.
Established bamboo is reasonably drought-tolerant, but established means four or five years of good root development, not one or two. Young bamboo in dry summers will drop and curl leaves and may shed the smaller canes if not watered. Mulching in late autumn with a thick layer of bark chip or well-rotted compost protects the rhizomes in cold winters and retains moisture through the growing season.
Thinning and tidying
Dead canes should be removed annually. A cane that has gone brown and leafless will not recover. Cutting it at ground level with loppers keeps the clump looking tidy and improves airflow through the plant. Old canes that have become thin and congested in the base can also be removed. The newer, larger canes in the centre of the clump are the ones worth keeping.
For larger Phyllostachys specimens, removing the lower branches to a height of around a metre reveals the full beauty of the canes and gives the plant a more sculptural, open look. This is sometimes called limbing up. I do this to my own Phyllostachys nigra every two or three years and it transforms the appearance. Thinning running bamboos that have been growing for several years often reveals a plant far more beautiful than the dense thicket you’ve been looking at. Removing thirty to forty percent of the oldest canes and clearing the base lets the remaining canes stand properly and catch the light.
Dividing bamboo
Fargesia clumps can be divided in spring to create new plants or to reduce the size of an established clump. The clump divides into sections with canes and roots attached. Each section will establish as a new plant if kept well watered and sheltered from drying winds in its first season. Division is best done just before or at the start of the growing season, late March to April in the north of England. Dividing in autumn and winter is harder on the plant.
Large established clumps are hard physical work to divide. The rhizomes are dense and matted. A mattock or strong spade, and sometimes a saw for the larger roots, is what you need. Do not underestimate it. Take divisions with at least three canes and good root attached. A single cane with minimal root will struggle to establish.
Bamboo in containers
Bamboo grows well in large containers and is an excellent choice for screening on a terrace or balcony. The key is container size. Too small and the roots become so congested the plant dries out constantly and produces thin, weak canes. A 60 to 80 litre container is the minimum for a large Fargesia or Phyllostachys. For permanent planting, bigger is better.
Container-grown bamboo needs regular feeding because nutrients deplete faster in a restricted compost volume. A slow-release granular fertiliser at planting, topped up with liquid feed through the growing season, keeps growth strong. Watering is the main challenge. Bamboo in a large container on a south-facing terrace in summer can need watering daily in hot dry spells. Missing a week in July will cause significant leaf drop, and though the plant usually recovers, the canes produced in a drought-stressed season are notably thinner and shorter.
In cold northern winters, large containers of bamboo benefit from some insulation. Bubble wrap or hessian around the container sides protects the root ball from freeze-thaw damage. Container-grown bamboo should be repotted or divided when it becomes visibly pot-bound. Roots emerging from the drainage holes or lifting the surface are the signs to act on.
Common problems
Common questions
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