Multiflora Rose

Handed out by the government as a living fence and now a listed noxious weed across the Midwest and mid-Atlantic. It swallows pasture and woodland edge in impenetrable thorny thickets, and it is the wild reservoir of rose rosette disease, the untreatable virus that kills garden roses.

How to recognize it and why never to plant it: fringed comb-like stipules at every leaf base (no native rose has them), 7-9 leaflets, sprays of many small white flowers rather than a few large pink ones, and pea-sized red hips that hang on all winter.

Never plant it — identify it, and identify it precisely, because ‘wild rose’ covers several perfectly good natives that ought to be left alone.

The fringed stipule is the test. Where a leafstalk meets the cane sits a narrow flange called a stipule. On multiflora rose it is cut into a fine comb of fringes along its edge, visible without a lens. On every native North American rose the stipule edge is smooth or at most gland-dotted. This character works in every season the plant has leaves and settles the question on its own.

Leaves and canes. Compound leaves of 7 to 9 leaflets (natives usually carry 5 to 7), on long, green, arching canes reaching 10 to 15 feet, armed with stout, downward-curved prickles. Canes arch over and root where the tips touch soil, so a single plant walks outward into a thicket.

Flowers. Branched sprays of many small white (rarely pale pink) fragrant flowers about an inch across, all opening together in late spring. Native roses bear few, large, pink flowers. This is the giveaway visible from a car window.

Hips. Tight clusters of firm, pea-sized red hips that persist on bare canes all winter — native rose hips are larger and fewer.

It grows in full sun to fairly deep shade, in almost any soil that is not waterlogged, and it responds to being cut by growing back thicker. There is no site condition that will contain it.

How it spreads: an enormous crop of bird-carried hips whose seed stays viable in the soil for years, plus arching canes that root where their tips touch down, plus hard resprouting from any crown that is cut and not killed.

Three mechanisms, and control has to interrupt all of them.

Seed, in absurd quantity. A large multiflora rose can set on the order of half a million seeds in a season, packed into pea-sized hips that stay on the canes all winter and get eaten by birds and small mammals through the leanest months. The seed passes through and germinates readily, so new plants appear under every perch, fence wire, and hedgerow tree. Worse, the seed is long-lived in the soil — commonly cited as viable for a decade or more — which is why a cleared pasture keeps producing seedlings years after the last bush came out.

Tip layering. The long canes arch over and root where their growing tips touch the ground, so the plant advances outward under its own power and a thicket that looks like a dozen shrubs is often a handful of individuals walking.

Resprouting. Cut a multiflora rose and it comes back from the crown with more stems than it had. Mowing, brush-hogging, and cutting are all useful only as part of a repeated regime; done once, they thicken the stand.

The plant that gets into most gardens arrives by a fourth route entirely: multiflora is the traditional rootstock under grafted garden roses, so it appears as a sucker from below the graft union. If the grafted variety dies and the sucker survives, the gardener now owns a multiflora rose.

Removal, not care: grub out young plants, cut-stump-treat or repeatedly mow established ones over two to four years, wear leather against the prickles, and keep walking the ground each spring for the seedling flush from a decade-long seed bank.

Dress for it first. The recurved prickles catch and tear, and a thicket will shred bare arms. Leather gloves and gauntlets, heavy sleeves, and eye protection are not optional, and you cut your way in rather than pushing through.

Small plants: grub them out. First- and second-year plants come out with a mattock or a weed wrench in moist soil, crown and roots together, and that ends them. This is the entire control program if you catch a pasture or a hedgerow early.

Established plants: cut and kill the crown. Cutting alone makes a denser bush, so pair it with one of three things. Cut-stump treatment — cut low and paint or spray the fresh cut immediately, before it seals — is the standard, most effective from late summer through the dormant season. Repeated mowing works on open ground: three to six cuts a season for two to four consecutive years genuinely exhausts the crowns, and this is the classic pasture answer. Grubbing with a tractor-mounted implement removes the crown outright on ground you can get equipment onto. Goats browse it hard and are a real tool for steep or thorny ground, though they suppress rather than eradicate.

Any herbicide you use must carry a label that lists the site you are treating — pasture, rangeland, fencerow, woodland, or non-crop area. Read and follow that label: it is legally binding, and pasture and hayfield products carry grazing and haying restrictions and replant intervals that matter if livestock or a hay crop are involved. Do not treat within a wetland, ditch, pond margin, or streambank unless the product is specifically labeled for aquatic sites, which in most states also means a permit or a licensed applicator.

Then keep coming back. The seed bank outlives the plants by a decade, so walk the ground every spring for several years and pull the seedling flush while it is ankle-high. Replant cleared ground with something that will hold it — a native rose (Carolina, Virginia, swamp, or prairie rose), ninebark, chokeberry, elderberry, or American beautyberry all make the same kind of thicket or hedge without any of this.

The hips and petals are edible like any rose's - small, seedy, and a footnote rather than a crop, from unsprayed plants only. Ecologically the plant runs at a heavy loss, converting pasture and woodland edge into thorny monoculture.

Honesty first: multiflora rose is a rose, so its hips and petals are edible exactly as any garden rose’s are. The hips carry vitamin C and make a decent tea or a strained jelly. But they are barely a quarter-inch across and mostly seed, so this is a curiosity rather than a harvest, and the standard rose rules apply: only from plants that have never been sprayed — which excludes most roadside and pasture thickets, since these are exactly the plants people treat — and strain out the fine seed hairs, which irritate mouth and throat.

None of that is a reason to keep it, and it should never become one. If you want rose hips, the native roses do it better: Carolina, Virginia, swamp, and prairie rose all bear larger, fleshier hips, all belong where they grow, and none of them is a noxious weed. If you want the very best hips of any rose, that is rugosa, which is covered under the main rose entry.

Ecologically multiflora runs at a heavy loss. It converts open pasture, old field, and woodland edge into thorny monoculture that excludes forage, native shrubs, and tree seedlings, cuts usable grazing acreage, and blocks livestock and wildlife movement. Birds do eat the hips, which is precisely how it spreads, and that modest wildlife value is dwarfed by the native shrub communities it replaces. The best thing this plant can do nutritionally is come out and be replaced by something that feeds more than the birds that plant it.

Telling it from native roses, the rose rosette question, why cutting makes it worse, the rootstock sucker in your own rose bed, whether it is illegal, and what to plant instead.

Is this multiflora or a native rose? Check the stipule at the base of a leafstalk: fringed like a comb means multiflora, smooth means native. Confirm with flowers — many small white ones in a spray, versus a few large pink ones — and leaflet count, 7 to 9 versus 5 to 7. Do not remove a wild rose without checking; the natives are worth having.

Will it give my garden roses rose rosette disease? Not directly, but it is the wild reservoir. The disease is a virus carried by a tiny wind-blown eriophyid mite, and wild multiflora stands are where it persists in the landscape. Removing multiflora near a rose planting is one of the few genuinely effective preventive measures, along with spacing roses so canes do not touch. If a garden rose develops bunched, hyper-thorny, persistently red witches’-broom growth, there is no cure: dig out the whole plant, roots included, and bag it.

I cut it down and it came back worse. Expected — it resprouts hard from the crown. Cutting has to be paired with immediate stump treatment, a multi-year mowing regime, or grubbing the crown out.

A thorny rose with white flowers came up in the middle of my rose bed. Almost certainly a rootstock sucker. Multiflora is the traditional understock for grafted roses; look below the graft union, and tear the sucker off at its origin rather than cutting it flush. If the grafted top is dead and only the sucker remains, remove the whole plant.

Is it illegal to have? In a number of states it is a listed noxious weed — Iowa, Missouri, West Virginia, Ohio, Pennsylvania, and Illinois among them — where planting or selling it is prohibited and landowners may have a control duty. Listings differ state to state, so check your own state’s noxious-weed list.

Something is killing my multiflora thicket. Probably rose rosette disease, which has spread through wild multiflora across the central and eastern US and does kill it. That is not a reason to leave the stand standing — a dying multiflora thicket is an active reservoir sitting upwind of everybody’s roses.

What should I plant instead? A native rose — Carolina, Virginia, swamp, or prairie rose — for the same suckering thicket and better hips, or ninebark, chokeberry, elderberry, or American beautyberry for a fast wildlife hedge.

Brought over as rose rootstock, then promoted for decades by conservation agencies as a living fence, erosion control, and wildlife cover and handed out to farmers by the million - before the same agencies reclassified it as a noxious weed.

Multiflora rose arrived in the United States in the 1860s as rootstock for grafting ornamental roses, a job it still does. Its second career was the destructive one. From the 1930s onward, federal and state conservation agencies promoted it enthusiastically: as a ‘living fence’ that would hold livestock without wire, as erosion control on gullied ground, as wildlife cover and food, and later as a crash barrier and headlight screen in highway medians. Extension services and soil conservation districts distributed millions of plants to farmers across the eastern and central states, often free.

It did everything it was advertised to do, and then kept going. By the 1960s the same agencies were describing it as a pest; by the following decades states were listing it as a noxious weed, and landowners who had been given the plants were being told to remove them at their own expense. Estimates of tens of millions of infested acres across the East and Midwest are routine.

The last chapter is the strangest. Rose rosette disease, a native North American virus, moved into the vast multiflora populations and began killing them, and it was for a while studied as a potential biological control for exactly that reason. It then jumped to cultivated roses, where it is now one of the most serious problems in American rose growing. The living fence turned out to be a reservoir for a disease that kills the plant it was grafted onto in the first place.

Invasive across roughly zones 4-9 through the eastern and central US, worst in the humid Midwest, Appalachians, and mid-Atlantic; limited mainly by severe cold, deep drought, and saturated soil, and less of a problem in the arid West.

Multiflora rose is hardy from about zone 4 to zone 9 and infests essentially the entire eastern and central United States, with its heaviest impact through the humid Midwest, Appalachians, Ohio Valley, and mid-Atlantic — grazing country with plenty of hedgerow, old field, and woodland edge, which is exactly the habitat it takes. It handles full sun to moderate shade, most soils, and periodic drought once established.

Its real limits are at the margins: it thins out in the northern Plains and upper Midwest where winters are severe enough to kill canes back hard, it does poorly on saturated or very wet ground, and in the arid and Mountain West it persists along irrigation but rarely takes off the way it does east of the Plains. Sustained deep shade under a closed canopy also slows it, though it will hold on for years waiting for a gap.

For control the climate note that matters is timing. In cold-winter regions the dormant season is long, the red hips make thickets easy to find, and frozen ground carries equipment — so cut in winter and follow up through the growing season. In the mild South the plant holds leaves later and the late-summer-to-fall reserve movement window for cut-stump work is longer, so watch the plant rather than the calendar. Everywhere, the multi-year rhythm is the same: kill the crowns, then patrol the seedlings.