Cold Hardy Bamboo for Zones 5 to 7

Updated September 2026 · Garden Advice Guide

Cold hardy bamboo comes in two very different groups, and choosing the wrong one is a decision you live with for decades. The clumping mountain bamboos, mainly Fargesia and the less hardy Borinda, stay in a tight clump that widens a few inches a year, and the best Fargesia species survive winters to about minus 20°F, which is zone 5. The running bamboos, mostly Phyllostachys, reach 20 to 40 feet in the right climate and include species that survive zone 5 too, but they spread by underground rhizomes that can travel 10 feet or more in a single season once the grove is established.

In zones 5 and 6, a clumping Fargesia is the right answer for nearly every yard. Running bamboo only belongs where you can install and maintain a proper barrier, or where you have acres and no neighbors. And before any running bamboo goes in the ground, check your state and town rules, because a growing number of places restrict it.

Know your number before you buy. Confirm your USDA zone with our free growing zone lookup, because bamboo tags list a survival temperature, and the gap between zone 5b and 6a is the difference between an evergreen screen and a clump of dead culms.

Updated September 2026

Cold hardy bamboo by zone: the species table

Hardiness numbers for bamboo vary between growers, nurseries, and bamboo societies, often by a full zone. Where sources disagree, the table below uses the narrower, safer range. "Coldest zone" means the plant reliably survives with its rhizomes intact. "Evergreen to" is the temperature below which you should expect leaf burn or top kill.

A few notes the table cannot hold.

Heights in cold zones run short. Catalog heights come from the Pacific Northwest and the Southeast. A yellow groove bamboo that reaches 30 feet in Georgia often tops out near 15 to 20 feet in zone 5, because a hard winter periodically knocks the grove back.

Tropical clumpers are not on this list for a reason. Bambusa multiplex and its cultivars are sold widely as "clumping bamboo," and they are genuinely non-invasive, but they are hardy only to about 15°F and will die to the ground or outright in zones 5 to 7. If a plant tag says "clumping" without naming Fargesia or Borinda, check the species before you buy.

Your zone is a floor, not the whole story. A Fargesia rated to zone 5 sited in a windswept spot with full winter sun will look worse in March than the same plant in a sheltered spot in zone 5 with afternoon shade. Microclimate moves bamboo survival as much as the number on the map.

Clumping vs running: how the rhizomes actually differ

The difference is underground, and it decides everything about maintenance.

Clumping bamboos (pachymorph rhizomes). Each rhizome is short and thick, and it turns upward to become a new culm within a few inches of where it started. The clump expands steadily outward, usually 2 to 6 inches a year at the edge. A Fargesia rufa planted as a 1-gallon division is typically 3 to 4 feet across after ten years. It will never jump across a lawn.

Running bamboos (leptomorph rhizomes). The rhizomes grow horizontally, often 6 to 12 inches below the surface, and put up culms at intervals along their length. A young planting runs slowly for two or three years while it builds energy, which is why so many gardeners assume their running bamboo is well behaved. Once established, a Phyllostachys grove can send rhizomes 10 to 20 feet from the parent in warm climates. In zone 5, cold soil slows that down, but it does not stop it.

That last row is the one to weigh. A clumping bamboo you regret is a weekend of digging. A running grove you regret can take three years to eliminate and may already be in your neighbor's yard.

Fargesia: the clumping bamboo for zones 5 and 6

Fargesia species come from the mountains of central and western China, where they grow in the understory of cool forests. That origin explains both their cold tolerance and their biggest weakness: they do not like hot sun or hot nights.

How much shade Fargesia needs

The rule of thumb that holds up across most of the country:

• Zone 5 and cool parts of zone 6: morning sun with light afternoon shade. F. rufa tolerates full sun here if the soil stays moist.
• Zone 6 and zone 7 with humid summers: four to six hours of morning sun, then shade from about 1 p.m. on. Dappled shade under high tree canopy also works well.
• Anywhere summer nights stay above about 75°F for weeks: Fargesia struggles regardless of shade, which is why it is a poor choice in most of zone 8 in the Southeast.

Shade matters in winter too. Fargesia leaves are evergreen, and they keep losing water on bright winter days while the ground is frozen and the roots cannot replace it. A Fargesia in full winter sun on the south side of a house often looks scorched by March, even though the temperature never approached its limit. A site with winter shade, or a spot out of the prevailing wind, keeps the foliage green.

Leaf curling is not damage. On a hot afternoon or in dry soil, Fargesia leaves roll lengthwise into thin tubes to cut water loss. If they unroll in the evening, the plant is fine. If they stay rolled through the next morning, water deeply.

Planting and establishment

Plant Fargesia in spring in zones 5 and 6 so it has a full season to root before its first winter, and no later than early summer. Set it in soil amended with compost, keep it evenly moist for the first year, and mulch 2 to 3 inches over the root zone. New culms appear from late spring into midsummer. Each new culm reaches its full height in about 60 days and never grows taller after that, which is why a young clump takes three to five years to reach its mature height: each year's culms are taller than the last.

For a screen, space F. robusta or F. rufa 3 to 5 feet apart. The clumps will close the gap in four to six years. Our backyard landscaping ideas include clumping bamboo in a comparison of screening plants by zone, spacing, and speed, and that is the place to weigh it against arborvitae, holly, and grasses.

Borinda: the zone 7 clumper

Borinda species look like larger, more upright Fargesia, and several grow to 15 or 20 feet with blue-gray new culms. They come from similar mountain habitats but at lower elevations, so they are less cold hardy. Treat Borinda as a zone 7 plant, and only a zone 6b gamble in a protected courtyard or against a south-facing wall with shade from the afternoon sun. Borinda boliana and B. angustissima are the two most often available. Expect leaf burn below about 10°F and top kill a few degrees colder.

Running Phyllostachys: which ones survive zone 5

If you have room and are prepared to contain it, three running species stand out for cold climates: Phyllostachys aureosulcata, P. bissetii, and P. nuda. All three have survived winters near minus 20°F with their rhizomes intact. In zone 5, their culms are often killed back in a hard winter, and the grove regrows from the rhizomes in late spring. In zone 6, they usually stay evergreen through a normal winter.

P. bissetii is the most shade tolerant and makes the densest screen. P. aureosulcata is the most widely available and the most vigorous in cold climates, including the forms with yellow culms. P. nuda has the hardiest reputation of the three and a dark, powdery culm.

The larger and more ornamental species, including black bamboo, golden bamboo, and moso, are best treated as zone 7 plants. In zone 6 they may survive as rhizomes but will spend most years as a short, damaged grove rather than the tall stand in the photograph. Golden bamboo, P. aurea, is also the species most often cited as escaped and naturalized in the Southeast.

After a hard winter: what top kill and leaf burn mean

A bamboo that looks dead in March usually is not. Winter damage comes in stages, and each one has a different outlook.

Scratch the culm before you cut anything. Scrape the surface of a culm with a thumbnail a foot above the ground. Green underneath means living tissue, and those culms will releaf. Tan or straw-colored means that culm is dead.

Do not judge before June. Phyllostachys shoots emerge from mid spring to early summer, and Fargesia shoots can come even later, into July. Many bamboos that looked lost in April have been dug out by owners who did not wait.

Expect a smaller grove the year after top kill. New culms that grow the season after a severe winter are usually shorter and thinner than the ones that died, because the rhizomes spent stored energy to replace them. It takes one to three normal winters to return to full height.

Reduce the damage next winter. Water the grove deeply in late fall before the ground freezes, keep 3 to 4 inches of mulch or shredded leaves over the rhizome zone, and leave the fallen leaves in place, since bamboo recycles its own silica from them. For marginal plantings, a burlap windscreen on the windward side through the coldest months noticeably reduces leaf burn.

Rhizome barriers: depth and installation

A barrier is the only reliable way to keep a running bamboo in its space long term. Done well, it is a one-time project. Done poorly, it fails quietly for years and then all at once.

Material. Use high-density polyethylene (HDPE) bamboo barrier at least 40 mil thick, and 60 mil for large or vigorous species. Do not use landscape fabric, concrete board, metal roof flashing, or thin plastic edging. Rhizome tips are sharp, and they find seams and weaknesses.

Depth. Bury the barrier 30 inches deep for most running bamboos in zones 5 to 7. Rhizomes typically travel in the top 12 inches of soil, but they dive when they hit an obstacle, and a 24 inch barrier is regularly undermined in loose soil. In heavy clay, 24 inches is sometimes enough, but 30 inches is the safer standard.

Height above grade. Leave 2 to 3 inches of barrier above the soil surface. Rhizomes that reach the barrier often turn upward and try to arch over the top. That exposed rim is where you will see them and cut them off.

Installation steps.

1. Mark out the planting area. Give a running bamboo at least a 10 by 10 foot area for a screen, and more for a grove, since a cramped barrier becomes root-bound and rhizomes press harder against it.
2. Dig a trench 30 inches deep around the perimeter.
3. Set the barrier with the top tilted outward about 10 to 15 degrees, so rhizomes that hit it are deflected up toward the surface instead of down under it.
4. Overlap any seam by at least 12 inches and seal it with a stainless steel clamping strip made for the purpose. Tape alone fails.
5. Backfill firmly, keeping mulch and soil off the exposed rim.
6. Walk the full perimeter every fall and cut any rhizome crossing the top edge.

Barriers are also the answer to keeping bamboo roots away from structures. For the specific distances and risks around a pool shell, plumbing, and decking, see our pool landscaping ideas rather than planting any bamboo near the water on the strength of a barrier alone.

Containing an established running grove without a barrier

If you inherited a running bamboo with no barrier, you can still hold its line.

Root pruning trench. Dig a trench about 12 inches deep and a spade wide around the grove where you want it to stop. Fill it with loose material such as sand, pine bark, or wood chips. Once or twice a year, in late summer and again in early spring, run a sharp spade or a mattock through the trench. Rhizomes that enter the loose fill are easy to find and cut.

Break the new shoots. Any shoot that comes up outside the grove boundary in spring can be kicked over or snapped off at ground level while it is still soft. Shoots are the rhizome's investment for the year, and removing them before they leaf out starves that rhizome.

If you plan to eat those shoots, cook them. Phyllostachys shoots are the bamboo shoots used in Asian cooking, so snapping them off is a harvest rather than waste. Raw shoots of many bamboos contain cyanogenic compounds that are destroyed by heat, so they are peeled and boiled in an open pot, with the water changed at least once, before they are eaten. Never eat them raw, and never take shoots from a grove that has been treated with herbicide.

Mow the edges. A lawn mowed weekly around a grove stops shoots from establishing in the turf, although the rhizomes can still travel underneath. Mowing controls the symptom. The trench controls the cause.

Removing a running bamboo grove

Eliminating running bamboo is a patience job measured in seasons.

Step 1: cut every culm to the ground. Do it in late spring, just after the new shoots have spent energy growing. Stack the culms somewhere they cannot root. Cut culms do not resprout, but rhizome sections with nodes can.

Step 2: remove the rhizomes. For small groves, dig them out with a mattock and a digging bar, following each rhizome to its end. Most sit in the top 12 inches. For larger areas, a small excavator removing the top foot of soil is often the only practical approach. Any fragment left behind with a live bud can regrow.

Step 3: keep cutting regrowth. Every shoot that emerges over the next two seasons should be cut or mowed as soon as it appears. Each shoot draws down the energy stored in the remaining rhizomes. Most groves are exhausted within two to three growing seasons of consistent cutting.

Step 4: herbicides only as a supplement, and on regrowth. Systemic herbicides labeled for bamboo work best on the soft leafy regrowth after the culms are cut, not on the mature grove. Read and follow the label, and do not use them where roots from desirable trees and shrubs share the soil. On a property line, talk to the neighbor first, since the rhizomes on their side will need to be dealt with too.

Laws and local rules on running bamboo

Running bamboo is increasingly regulated, and the rules almost always target the running genus rather than bamboo in general.

Connecticut regulates it statewide. A 2013 act, amended in 2014, covers bamboo in the genus Phyllostachys. As amended, it bars planting running bamboo within 40 feet of an abutting property or a public right of way, makes an owner liable for the damage running bamboo causes if it spreads past the property line, including the work of removing it, and carries a fine for violations. Sellers also have to hand buyers a written notice about the plant. Note that the 2014 amendment replaced the original 100 foot setback and removed the exemption the first version gave for a barrier or an above-ground container, so older write-ups describing the 2013 version are out of date.

Virginia lets localities act. State law since 2017 allows any Virginia county, city, or town to adopt an ordinance requiring landowners to keep running bamboo contained with barriers or trenching, and barring it from spreading onto a neighboring property or a public right of way, backed by a civil penalty. Whether it applies to you depends on whether your own locality adopted one.

Elsewhere it is mostly local. Counties and municipalities in New York, New Jersey, and Maryland have passed their own rules, ranging from containment requirements to bans on new plantings or on the commercial sale of running species. Other statewide bills have been introduced in several states without becoming law.

Rules change from one year to the next and stop at a town line, so the only reliable check is your own city or county code office, plus your state agriculture or natural resources department, before any running species goes in the ground. Clumping Fargesia and Borinda are generally outside these rules, which usually name Phyllostachys or running bamboo specifically, but a few ordinances are written broadly enough to catch all bamboo, so read the wording. A homeowner association can also restrict bamboo where no law does.

Where bamboo fits, and what to plant instead

In zones 5 and 6, Fargesia is a fine-textured evergreen screen for part shade that almost nothing else matches. If your spot is full sun with hot afternoons, or you want the movement of bamboo without any rhizome to manage, tall ornamental grasses such as switchgrass and miscanthus give a similar effect in a single season. They die back in winter, but they never spread underground. Our guide to deer resistant ornamental grasses covers the tall species for screening. That also matters for bamboo itself, since deer will browse young Fargesia foliage in a hard winter when little else is green.

Frequently asked questions

What is the most cold hardy bamboo?

Among clumping bamboos, Fargesia rufa, F. murielae, and F. nitida are the hardiest, surviving to about minus 20°F with leaf burn starting near minus 10°F. Among running bamboos, Phyllostachys aureosulcata, P. bissetii, and P. nuda survive similar lows, although their culms are often killed back in a severe zone 5 winter and regrow from the rhizomes.

Can bamboo grow in zone 5?

Yes. Clumping Fargesia species are the practical choice for zone 5 and stay evergreen through most winters in a sheltered site with some afternoon and winter shade. Several running Phyllostachys species survive zone 5 as well, but they need a barrier and may lose their culms in the coldest years.

Is clumping bamboo really non-invasive?

Clumping bamboos with pachymorph rhizomes, including Fargesia and Borinda, expand only a few inches a year at the edge of the clump and do not send runners across a yard. They can still get wider than you planned over many years, but a clump can be trimmed back with a sharp spade or saw. The term "clumping" is sometimes applied loosely on plant tags, so confirm the genus.

How deep should a bamboo barrier be?

Bury HDPE barrier 30 inches deep for running bamboo in most soils, with 2 to 3 inches left above the surface and the top tilted slightly outward. Use 40 mil material as a minimum and 60 mil for vigorous species, and overlap seams by at least 12 inches with a steel clamping strip.

My bamboo turned brown over winter. Is it dead?

Probably not. Brown, curled leaves on green culms are leaf burn, and those culms will push new leaves. If the culms themselves are tan and brittle, they are dead, but the rhizomes are usually alive. Wait until late June for new shoots before deciding, then cut the dead culms at ground level.

Does Fargesia need shade?

In most of zones 6 and 7, yes. It performs best with morning sun and shade from early afternoon, or bright dappled shade under trees. In zone 5, F. rufa can take more sun if the soil stays moist. Winter shade and shelter from wind also reduce leaf scorch on sunny days when the ground is frozen.

How long does it take to get rid of running bamboo?

Plan on two to three growing seasons. Cut all culms, dig out as much rhizome as you can from the top 12 inches of soil, then cut every new shoot as it appears until no more come up. Skipping the follow-up cutting is the reason most removal attempts fail.