The right time to prune roses depends on one question: does your rose bloom once a year or repeatedly? Repeat-blooming roses (hybrid teas, floribundas, grandifloras, most shrub roses and climbers) are pruned in late winter or early spring, just as the buds begin to swell. Once-blooming roses (many old garden roses and ramblers) are pruned right after they finish flowering in early summer. Prune either at the wrong time and you lose flowers. This guide gives the timing for every rose type, how much to cut, and how to make each cut.
When to prune roses: quick guide by type
| Rose type | When to prune | How hard |
|---|---|---|
| Hybrid tea, grandiflora, floribunda, miniature | Late winter to early spring, as buds swell | Hard: remove about one-half to two-thirds of the height, keep 3–5 strong canes |
| Modern shrub and landscape roses (e.g. Knock Out type) | Early spring, as buds break | Light to moderate; remove the oldest third of canes each year |
| Climbers (repeat-blooming) | Early spring | Keep main canes; shorten side shoots to 3–6 inches |
| Ramblers (once-blooming) | Right after flowering, early summer | Remove some old canes; keep new ones |
| Once-blooming old garden roses (Alba, Gallica, Damask, Centifolia, Moss) | Right after flowering | Light shaping only |
| Repeat-blooming old garden roses (Bourbon, Hybrid Perpetual, Portland) | Before flowering, in early spring | Can be pruned more heavily |
Source: University of Illinois Extension and Iowa State University Extension.
How to tell it’s time: watch the buds, not the calendar
The exact month changes with your climate, so use the plant as your guide. Prune repeat-blooming roses when the buds on the canes start to swell, before much new growth appears. NC State Extension notes roses are among the first landscape plants to wake up in late winter. A traditional cue is when forsythia starts to bloom, which Illinois Extension also mentions.
| Climate | Typical window for repeat bloomers |
|---|---|
| Cold-winter areas (for example Iowa, Minnesota) | Late March to mid-April, after winter protection comes off (Iowa State) |
| Mild-winter areas (for example the Southeast) | Late winter, as buds swell |
| Frost-free areas | During the coolest, slowest-growing part of winter |
Don’t prune hard in fall. Iowa State advises against fall pruning. Pruning stimulates growth that cold weather can kill, and winter often causes some dieback anyway, which you would have to cut out again in spring. In fall, only remove broken or diseased canes, and shorten very tall canes that could whip around in winter winds. Illinois Extension also recommends not cutting flowers after October 1 in cold climates, so the plant can harden off.
How to prune roses step by step
- Get the right tools. Sharp, clean bypass hand pruners for canes up to about ¾ inch thick, loppers for thicker canes, and heavy leather gloves. Dull blades crush canes; clean blades help prevent spreading disease.
- Remove the 3 Ds first: dead, damaged and diseased wood. Live wood is green with plump buds and a white center (pith); dead wood is brown with a brown or gray pith. Iowa State says to cut at least 1 inch below any dead area, or remove the whole cane if no life remains.
- Take out weak and crossing canes. Remove canes thinner than a pencil, canes that cross or rub, and growth heading into the center of the bush.
- Remove old, woody canes at the base to make room for vigorous new ones.
- Shorten what remains to the height suited to your rose type (see below).
- Make each cut correctly: about ¼ inch above an outward-facing bud, at a slight angle (around 45 degrees) sloping away from the bud so water runs off. Outward-facing buds grow into an open, vase-shaped bush with good air flow.
- Clean up. Rake out fallen leaves and prunings, which can carry fungal diseases such as black spot.
How much to cut back
Hybrid teas, grandifloras and floribundas
These bloom on new growth and respond to hard pruning. Illinois Extension recommends removing about one-half to two-thirds of the plant’s height in early spring, leaving 3–5 healthy, stout canes each cut back to 3–5 outward-facing buds. NC State suggests keeping 3–7 canes cut back to 12–15 inches. In cold climates where winter kills a lot of wood, Iowa State notes canes are often cut back to 8–12 inches, simply to remove the dieback.
Shrub and landscape roses
Modern shrub roses need much less. Illinois Extension says they can be left unpruned for their first two or three seasons. After that, use the “one-third” method each spring: remove about a third of the oldest canes at the base, keep the strongest young canes, and lightly shape the rest by cutting just above outward-facing buds.
Climbing roses
Leave the long main canes that form the framework and tie them as horizontally as possible, which encourages more flowering shoots. In early spring, remove dead canes and shorten the side shoots (laterals) that flowered last year to 3–6 inches. Remove an old main cane occasionally to make room for a vigorous new one.
Ramblers and once-blooming roses
These flower on wood grown the previous year. Pruning them in spring removes this year’s flowers. Wait until right after they finish blooming in early summer, then thin out some of the oldest canes and shape lightly.
Deadheading through the season
- On repeat bloomers, cut spent flowers back to just above a leaf with five leaflets. Iowa State suggests keeping at least two five-leaflet leaves on each shoot; on first-year plants, cut just above the top three-leaflet leaf.
- Stop deadheading by late August or early September in cold climates, so the plant slows down and hardens off for winter.
- Once-blooming and many old roses need no deadheading. Leave the flowers if you want decorative rose hips.
Suckers on grafted roses
Shoots that come from below the graft union (the knob at the base of the stem) grow from the rootstock, not your chosen variety. They often have different leaves. Illinois Extension advises digging down and tearing the sucker off where it starts, since cutting it at ground level encourages several more to grow.
For planting, feeding and general care, see our guide to growing roses. Aphids on new rose shoots after pruning? See how to get rid of aphids. Pruning other shrubs this spring? Read when to prune butterfly bushes and our hedge trimming tips.
Frequently asked questions
Can I prune roses in the fall?
Only lightly: remove dead, broken or diseased canes and shorten very long canes that could be damaged by wind. Leave the main pruning for late winter or early spring.
What happens if I prune roses too early?
Pruning during a mild spell in winter can trigger new growth that a later freeze kills, and you may need to cut the plant back again. Wait until the buds begin to swell.
Should I seal rose pruning cuts?
Usually not. Illinois Extension suggests sealing cut ends with white glue only where cane borers are a problem.
Do Knock Out roses need pruning?
They need little. Treat them as shrub roses: in early spring, remove dead wood, take out a few of the oldest canes, and cut the plant back to the size and shape you want.
Sources
- University of Illinois Extension, Pruning Roses (timing and pruning by rose type, how much to remove, cut technique, deadheading, suckers, sealing cuts).
- Iowa State University Extension, How to Prune Roses (cold-climate timing, no fall pruning, dead wood, 8–12 inch cutback, deadheading leaflet rule, tools).
- NC State Extension, When to Prune Roses (bud swell as the cue, once vs repeat bloomers, canes to keep and height).
