Shrub · Rosaceae
Rambling Rose
Rosa
Give it full sun, a strong support, and a prune at the right moment, and a rambler will smother a fence in early summer flowers.
Full sun
Every 5–7 days
730–1095 days
USDA 4–9
Overview
A rambling rose is the most exuberant kind of rose there is. It throws out long, flexible canes that scramble over fences, arches, and old trees, then covers them in great sprays of small flowers for one big flush in early summer. Where a hybrid tea gives you a few large blooms, a rambler gives you hundreds of little ones all at once.
All that vigor comes with a catch: a rambler is fast and large. It can put on as much as 20 feet (6 m) of growth in a single season, and a mature plant reaches 15 to 30 feet (4.6 to 9 m) across. Give it a sturdy frame from the start, because a flimsy trellis or a weak shrub it climbs into will buckle under the weight.
Roses earn their reputation for fuss mostly through pruning and disease. Cut a rambler at the wrong time and you lose a year of bloom. Crowd it in damp shade and black spot and mildew move in. Get the timing and the airflow right, though, and a rambler is one of the toughest, most generous plants you can grow.
Care
The short version: full sun, loose well-drained soil rich in compost, and a deep drink at the base every 5 to 7 days while it settles in. Prune right after the flowers fade, never in late winter, and tie the long canes to a strong support as they grow.
Light
Ramblers flower best in full sun, ideally six or more hours a day, though they'll take partial sun or light shade. Cut the sun and you cut the bloom, and shade also invites the mildew that plagues crowded roses.
Water
Water deeply at the base in the morning so the leaves dry fast, every 5 to 7 days while the plant establishes. Skip overhead and evening watering, which keeps the foliage wet and feeds black spot and mildew. Once a rambler is rooted in, it shrugs off dry spells well.
Soil
Plant in loose, well-drained loam with plenty of organic matter worked in. A pH of 6.0 to 6.8, just on the acid side of neutral, suits roses best, and good drainage keeps the roots healthy.
Temperature
Ramblers are tough, taking anything from -20°F to 95°F (-29°C to 35°C) across their hardy range. They handle hard winters and summer heat without much fuss.
Humidity
Outdoor humidity is no concern on its own, so there's no number to hit. What counts is airflow, because still, damp air around crowded canes is exactly what black spot and powdery mildew need.
Feeding
Feed with a balanced granular rose or general fertilizer from spring through midsummer. Stop well before fall, since late feeding pushes soft new growth that won't harden off before the cold.
Pruning
Timing is everything here: prune right after the summer flowers fade, never in late winter. Ramblers bloom on last year's wood, so dormant pruning cuts off the flowers. After bloom, take out some of the oldest canes at the base, tie vigorous young canes to the support, and shorten the side shoots; rejuvenate an old plant by removing about a third of the oldest canes each year.
Repotting
Ramblers are vigorous landscape plants and belong in the ground, not in pots. They're rarely containerized, so repotting isn't part of growing one; give it a permanent spot with room to run from the start.
Size & spacing
Expect a big plant, 15 to 30 feet (4.6 to 9 m) tall and 8 to 20 feet (2.4 to 6 m) wide at maturity. Set it well away from paths and smaller plants, and give it a strong, large support it can't overwhelm.
When to plant
Set a rambler out in early spring once the frost has passed, or plant dormant bare-root stock in late winter to early spring. It blooms in a single flush from late spring into early summer on the canes it grew the year before, and it's 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
Most rambler trouble is fungal and shows up first on the leaves, with insects a distant second. Keep the foliage dry and the air moving and you head off the worst of it. Match what you see below, then act before it spreads through the plant.
Black spots ringed with yellow, and leaves falling early
This is black spot, the fungus that troubles roses more than any other. It spreads when splashed water leaves the foliage wet for hours, so the marked leaves go yellow and drop. Pick off the spotted leaves, clear the fallen ones, water at the base in the morning, and open the plant up so air moves through it.
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
White powdery film on leaves and new shoots
A white, dusty coating on the leaves and shoot tips is powdery mildew, which takes hold in shade, crowding, and old leaf litter. The new growth often twists as it comes in. Move the plant into sun if you can, water at the base rather than overhead, sweep up the dead leaves that hold the spores, and spray a labeled fungicide only when it gets ahead of you.
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 bugs swarming the new shoot tips
Those little pear-shaped insects clustered on the buds and tender tips are rose aphids, busiest from June through October. A few do almost no harm, so there's no need to reach for a spray right away. Blast them off with a morning jet of water, let lady beetles do their work, and save insecticidal soap for a heavy outbreak.
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
Good news for pet owners: true roses are non-toxic to cats, dogs, horses, and the rest. The ASPCA lists them as safe, so a chewed leaf or petal is no cause for alarm. The one hazard is mechanical, not chemical: the canes bristle with sharp thorns that scratch skin and snag fur, so wear thick gloves and long sleeves when you work among them.
Safe for
People · Cats · Dogs · Horses · Rabbits · Livestock · Birds
Cats None
Roses are on the ASPCA's non-toxic list, so a curious cat won't be poisoned by a nibble. The only thing to watch is a scratched nose or paw from the thorns.
Dogs None
A dog can chew the leaves or petals without any poisoning risk. The thorns are the real worry, since an excited dog pushing through the canes can pick up scrapes around the face and feet.
Horses None
The ASPCA lists roses as safe for horses, and grazing on the foliage causes no harm. Keep in mind the stout thorns can catch a soft muzzle.
Rabbits Safe
Rabbits can browse rose leaves and shoots with no toxic effect. Their lips and tongue are the part to protect from the prickly canes.
Livestock Safe
Cattle, goats, and sheep handle rose foliage without trouble, and goats in particular browse it readily. Nothing in the plant poisons them, though the thorns can scratch grazing animals.
Birds Safe
Roses pose no chemical danger to birds, and many wild birds shelter in the dense, thorny growth. There's nothing toxic here to keep them away from.
People Safe
Roses aren't poisonous to people. The one real hazard is mechanical: the sharp thorns scratch and puncture skin, so wear thick gloves and long sleeves when you prune or train 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
Ramblers range from species roses to old garden favorites. These three show the spread, from a coarse spreader to a near-thornless climber to a North American native.
Rosa multiflora 'Grevillei' (Seven Sisters)
A powerhouse rambler whose coarse arching canes spread fast and reach about 15 feet (4.6 m), so it needs plenty of room and a strong frame.
Rosa 'Veilchenblau'
A nearly thornless rambler that carries violet-blue blooms which fade as they age, climbing 10 to 15 feet (3 to 4.6 m).
Rosa setigera (Prairie Rose)
A native North American species rose that climbs to about 15 feet (4.6 m) once it has a support to lean on.
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
Ramblers multiply with almost no effort, which is why they spread so readily. Cuttings and layering are the home gardener's routes, while grafting is left to the nursery trade.
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
Ramblers strike easily from cuttings. Take semi-hardwood pieces from summer into early fall, or switch to hardwood cuttings late in the fall, then keep them evenly moist in a shaded spot. Roots come in over several weeks to a few months, but plan on a year or more before the new plant flowers.
LayeringEasy
During the growing season · One growing season to root before separating
Layering suits a rambler perfectly, since its long flexible canes bend right down to the ground. Peg a cane against the soil during the growing season and it roots where it touches, ready to cut free from the parent after a full season of rooting.
GraftingDemanding
Summer (budding) for commercial propagation · One or more seasons
Grafting is the trade's method, not the home gardener's. Nurseries bud a named cultivar onto a chosen rootstock in summer, and the union takes one or more seasons to grow into a sellable plant.
Myths
Rambling roses should be pruned hard in late winter, the same as hybrid teas.
Ramblers flower once in early summer on wood they grew the year before, so cutting them back in late winter strips off the very canes that were about to bloom. Prune right after the flowers fade instead, and you keep next year's show.
Ramblers and climbers are the same plant and rebloom all season.
Ramblers grow far more vigorously than most climbers, with longer, more flexible canes. Most bloom just once a year, and once that early-summer flush is spent, they're finished flowering until the next.
Roses are poisonous to dogs and cats.
The ASPCA lists true roses (Rosa) as non-toxic to cats, dogs, and horses, so a chewed leaf or petal won't poison a pet. The only real hazard is the thorns, which scratch rather than poison.