Shrub · Rosaceae
Rambling Rose
Rosa
Long, thorn-studded canes and great sprays of small flowers give the rambler its wild, tumbling look in early summer.
Full sun
Every 5–7 days
730–1095 days
USDA 4–9
Overview
Up close, a rambling rose is all length and profusion. Its canes run long and pliable, thin enough to bend and arch, and studded along their length with sharp thorns. In early summer they carry not a few big blooms but hundreds of small flowers, packed into broad sprays that weigh the canes down. A hybrid tea shows a handful of large, single blooms; a rambler shows a cascade of tiny ones crowded together.
The scale of the plant is written into its canes. In one season they can stretch as much as 20 feet (6 m), long, whippy, and heavy, and a mature plant fills 15 to 30 feet (4.6 to 9 m) with a tangle of arching stems. Each cane is thick with prickles and flexible enough to sag, so the weight of that much growth pulls hard on anything it climbs.
The plant shows its troubles on its own surfaces. Get the pruning wrong and the canes stand bare of flowers for a season. Let the leaves stay damp and crowded and black spot freckles the upper leaf surfaces while powdery mildew dusts the shoots. Given sun and moving air, the foliage stays clean and the canes carry their full weight of bloom.
Care
The short version: full sun, loose compost-rich soil, and a deep soak at the base every 5 to 7 days while the roots take hold. Cut the canes back right after the flowers fade, never in late winter, and tie the long, thorny stems to a strong support as they lengthen.
Light
A rambler needs full sun, six or more hours a day, to cover its canes in flower; it will grow in partial sun or light shade but bloom far more thinly. In shade the growth also crowds and stays damp, and that is where the pale film of mildew shows on the shoots.
Water
Pour water deeply at the base in the morning, every 5 to 7 days while the roots establish, so the leaves are dry by midday. Water sitting on the foliage overnight is what lets black spot freckle the leaves and mildew coat the shoots. Once its roots run deep, the plant holds up through dry spells.
Soil
Sink the roots into loose, well-drained loam worked full of dark organic matter. Roses sit best at a slightly acidic pH of 6.0 to 6.8, and open, crumbly soil lets water drain past the roots instead of pooling around them.
Temperature
The canes are tough enough to stand -20°F to 95°F (-29°C to 35°C) across the plant's range. Hard frost and high summer heat pass over the wood without lasting marks.
Humidity
There is no humidity figure to hit outdoors, so leave the numbers aside. The thing that shows on the plant is airflow: when still, damp air hangs among the crowded canes, black spot spots the leaves and powdery mildew whitens the shoots.
Feeding
Work in a balanced granular rose or general fertilizer from spring through midsummer to fuel the canes and flowers. Stop well before fall, since a late feed pushes soft, sappy new shoots that stay green and never firm up before the cold.
Pruning
Take the blades to it right after the summer flowers fade, never in late winter. The buds ride on last year's canes, so a dormant cut strips the wood that would have flowered. Once the blooms brown, cut out some of the oldest, woodiest canes at the base, tie the whippy young canes to the support, and shorten the side shoots; on an old plant, clear about a third of the oldest canes each year.
Repotting
This is a big, sprawling plant meant for open ground, not a pot; its roots and canes both run too far for a container. Repotting never comes up, so plant it once in a permanent spot with room for the long canes to reach out.
Size & spacing
At full size the plant stands 15 to 30 feet (4.6 to 9 m) tall and spreads 8 to 20 feet (2.4 to 6 m) wide, a broad mound of arching, thorny canes. Keep those canes well clear of paths and smaller plants, and set them on a strong, large support they cannot pull down.
When to plant
Set a rambler out in early spring after frost, or plant it as a leafless, dormant bare-root stick from late winter into early spring. Its one flush of small flowers comes from late spring into early summer on the canes grown the year before, and the plant is hardy across USDA zones 4 to 9.
Northern hemisphere
Southern hemisphere
Typical months for a temperate climate: start earlier in warm zones, later where spring frosts linger.
- Sow: not typical; ramblers are propagated vegetatively, not from seed
- Plant: early spring after frost or in fall; plant dormant bare-root stock in late winter to early spring
- Harvest: single flush in late spring to early summer, with large sprays of small flowers on previous year's wood
Hardiness
USDA hardiness zones: 4–9
Temperature: down to -34°C
Troubleshooting
A rambler wears its problems where you can see them, on the leaves and shoot tips first, with insects a distant second. Dry foliage and moving air keep those surfaces clean. Match the marks and clusters below to what is on your plant, then act before they spread across it.
Fringed black spots and yellowing, thinning foliage
Look on the upper leaf surfaces for dark, fringe-edged spots ringed with yellow, and for leaves dropping before their time; that is black spot. It sets in where splashed water leaves the foliage wet for hours, then the spotted leaves yellow and fall. Strip off the marked leaves, gather the fallen ones, water low and early, and thin the canes so air moves between them.
Fix:
- Remove and dispose of infected leaves and fallen debris
- Water at the base in the morning so foliage dries quickly
- Improve air circulation by pruning and proper spacing
- Apply a preventive fungicide such as sulfur, neem oil, or potassium bicarbonate when conditions favor infection
A white powdery film over leaves and shoot tips
A dry, white, powdery film across the leaves, buds, and shoot tips is powdery mildew, and the new shoots often twist and pucker as they push through it. It builds in shade, crowding, and old leaf litter. Move the plant into sun, water at the base rather than over the top, sweep up the spore-carrying leaves, and spray a labeled fungicide only if the film keeps spreading.
Fix:
- Grow roses in a sunny, open location
- Avoid overhead and nighttime watering
- Clean up dead leaves that harbor spores
- Apply a labeled fungicide if needed
Soft green or pink insects packed on the shoot tips
The tiny, pear-shaped, soft-bodied insects massed on the buds and tender tips, green or pink with a pair of little tubes at the rear, are rose aphids, thickest from June through October. In small numbers they hardly mark the plant. Blast them off the shoots with a hard morning jet of water, leave the lady beetles to graze them, and turn to insecticidal soap only for a heavy crust of them.
Fix:
- Hose aphids off with a strong stream of water in the morning
- Tolerate low to moderate numbers, which cause little damage
- Encourage natural predators such as lady beetles
- Use insecticidal soap for heavy infestations
Toxicity
The danger on a rambler is one you can see and feel, not one that poisons. True roses are non-toxic to cats, dogs, horses, and the rest, per the ASPCA, so a chewed leaf or petal does no harm inside. What does the damage is the armament on the canes: rows of sharp thorns that scratch skin and snag fur, which is why thick gloves and long sleeves belong on before you handle the stems.
Safe for
People · Cats · Dogs · Horses · Rabbits · Livestock · Birds
Cats None
Roses sit on the ASPCA's non-toxic list, so a cat that bites a leaf swallows nothing harmful. The only mark it might come away with is a scratched nose or paw from a thorn.
Dogs None
A dog can crunch the leaves or petals with nothing toxic going down. The thorns are the real bite, since a dog shoving through the canes can rake up scrapes across the face and feet.
Horses None
The ASPCA lists roses as safe for horses, and a mouthful of foliage does no internal harm. The catch is on the outside: the stout thorns can prick a soft muzzle.
Rabbits Safe
Rabbits can strip the leaves and shoots with no toxic effect. It is their soft lips and tongue that meet the prickly canes worst.
Livestock Safe
Cattle, goats, and sheep chew rose foliage without harm, and goats work through it eagerly. Nothing inside poisons them, but the thorns can rake a grazing hide.
Birds Safe
Roses hold nothing toxic for birds, and many wild ones tuck into the dense, thorn-studded canes for cover. There is no poison here to keep them out.
People Safe
Roses are harmless to eat, but the plant defends itself by hand: the sharp thorns score and puncture skin, so pull on thick gloves and long sleeves before working the long canes.
The main hazard is mechanical: rambler canes bear sharp thorns (prickles) that can scratch or puncture skin. Wear thick gloves and long sleeves when pruning or training the very long, vigorous canes.
Varieties
The ramblers vary as much in their canes and flowers as in their size. These three show the physical range, from a coarse, heavily armed spreader to a smooth, nearly thornless climber to a North American native.
Rosa multiflora 'Grevillei' (Seven Sisters)
A heavy, coarse-caned rambler whose thick, arching stems climb fast to about 15 feet (4.6 m), wanting room and a strong frame to carry all that armored wood.
Rosa 'Veilchenblau'
A smooth, nearly thornless rambler that hangs violet-blue flowers which pale as they age, its canes climbing 10 to 15 feet (3 to 4.6 m).
Rosa setigera (Prairie Rose)
A North American native species rose whose canes lean and climb to about 15 feet (4.6 m) once they find a support to grip.
Companions
Ramblers do best with aromatic, sun-loving neighbors that share their need for good drainage and help screen the bare bases of leggy canes.
Plant near
Lavender: Aromatic companion that shares full-sun, well-drained conditions and may help deter some pests.
Catmint (Nepeta): Low-growing companion that covers the bare bases of leggy rambler canes and shares sun and drainage needs.
Garlic and other alliums: Often interplanted with roses and reputed to discourage aphids.
How to propagate
A rambler roots almost anywhere its canes touch down, which is why it spreads so far. Cuttings and layering are the home gardener's routes, taking pieces of cane or pinning a whole one to the soil, while grafting is the nursery's work.
Stem cuttingsEasy
Summer to early fall using semi-hardwood, or hardwood cuttings in late fall · Several weeks to a few months to root; a year or more to a flowering plant
Cut lengths of cane root without much trouble. Take firmer, semi-hardwood pieces from summer into early fall, or bare hardwood cuttings in late fall, and stand them in evenly moist soil in the shade. Roots break from the base over several weeks to a few months, though the first flowers are a year or more off.
LayeringEasy
During the growing season · One growing season to root before separating
A rambler layers itself almost by nature, its long, limber canes flopping down to the soil. Pin one against the ground through the growing season and roots grow from the buried stretch, ready to sever from the parent after a full season of rooting.
GraftingDemanding
Summer (budding) for commercial propagation · One or more seasons
Grafting is bench work for the nursery, not the garden. A grower slips a bud of the chosen cultivar under the bark of a rootstock in summer, and the join swells and knits over one or more seasons into a plant fit to sell.
Myths
Rambling roses should be cut back hard in late winter, like hybrid teas.
The flowers sit on canes the plant grew the year before, so a hard late-winter cut lops off the very wood about to bloom. Wait until the flowers fade, then prune, and the next year's sprays are spared.
Ramblers and climbers are the same plant and rebloom all season.
A rambler runs far longer and more limber in the cane than most climbers. It blooms only once a year, and when that early summer flush of small flowers is spent, the canes carry no more until the following season.
Roses are poisonous to dogs and cats.
The ASPCA lists true roses (Rosa) as non-toxic to cats, dogs, and horses, so a bitten leaf or petal poisons nothing. The thorns are the only real hazard, drawing a scratch, not poison.