How to Prune Roses

Why rose pruning matters

Pruning roses serves three purposes: shaping the plant for airflow (which reduces disease), removing unproductive old wood (which redirects energy to new flowering growth), and controlling size (which keeps the rose in proportion to its space). Skip pruning and roses become dense, disease-prone shrubs that produce fewer flowers each year.

The challenge is that pruning timing and technique vary significantly by rose type and USDA zone. A hybrid tea rose in Nashville, Tennessee gets pruned in late February or March — before the first forsythia flowers drop. The same timing applied to a once-blooming climbing rose would cost the entire season’s bloom. Understanding which type of rose you have is step one.

Identifying your rose type before pruning

The most common mistake is treating all roses the same. Hard early spring pruning — which is correct for hybrid teas — removes all the flower buds from once-blooming roses for the entire year.

For comprehensive rose growing information beyond pruning, see our rose bush care guide.

When to prune roses by US zone

The forsythia signal is the most reliable timing indicator across US climates: prune modern repeat-blooming roses when forsythia has bloomed and the petals are dropping. This corresponds to a soil temperature around 55°F — the temperature at which rose roots begin active growth and the plant is ready to redirect energy into new growth.

Spring pruning timing by USDA zone:

• Zone 4 (Minnesota, Montana): late April to early May
• Zone 5 (Chicago, Denver): early to mid-April
• Zone 6 (Philadelphia, Nashville): mid-February to mid-March
• Zone 7 (Atlanta, Dallas): late January to mid-February
• Zone 8 (Houston, Portland OR): January to early February
• Zone 9 (Los Angeles, Phoenix): December to January
• Zone 10–11 (Florida, Hawaii): December

In my zone 6b Nashville, Tennessee garden, forsythia typically blooms in early February to early March depending on the year. I prune my hybrid teas within two weeks of the forsythia peak.

The correct pruning cut

Every pruning cut follows the same technique:

1. Position the blade ¼ inch above a bud
2. The bud should face outward (away from the center of the plant)
3. Make the cut at a 45-degree angle, sloping away from the bud
4. The lower side of the angled cut should be at or slightly below the level of the bud

Why outward-facing buds: Buds develop into new canes that grow in the direction the bud faces. Inward-facing buds produce canes that grow into the center of the plant, crossing and rubbing against other canes. Crossed canes create wounds that become disease entry points. Outward-facing buds produce canes that open the plant center, improving airflow and light penetration — both critical to reducing black spot and other fungal diseases.

Why 45-degree angle: A flat cut across the stem holds water against the bud, which promotes botrytis blight. The angled cut sheds water away from the bud, keeping it dry.

Bypass vs. anvil pruners: Use bypass pruners only. Anvil pruners crush the stem between a blade and a flat plate, creating a bruised, compressed wound. Bypass pruners make a clean slicing cut the way scissors do. Clean cuts heal faster and introduce less opportunity for disease.

Hard spring pruning for hybrid teas and grandifloras

Hybrid teas and grandifloras benefit from aggressive spring pruning. The goal is to reduce the plant to a framework of 3–5 healthy canes, each 12–18 inches tall above the graft union (the swollen knob at the base of the plant).

This sounds severe — and for novice rose growers it often is alarming. But hybrid teas and grandifloras produce their best blooms on new wood from the current season. Hard pruning redirects all the plant’s energy into producing a few strong, productive new canes rather than maintaining a large framework of older, less productive wood.

Step-by-step spring pruning for hybrid teas:

1. Start by removing dead wood — brown, shriveled, or clearly dead canes back to healthy green tissue
2. Remove canes smaller than pencil diameter (too weak to produce quality blooms)
3. Remove any canes that cross through the center of the plant
4. Remove any suckers growing from below the graft union (these are the rootstock, not the named variety)
5. Select 3–5 of the strongest remaining canes and cut each to 12–18 inches above the graft union
6. Each cut should be above an outward-facing bud at a 45-degree angle

After hard pruning, most hybrid tea bushes look alarmingly small. This is correct. By late May in zone 6b, those 3–5 canes will have produced 12–18 inches of new growth and the first buds of the season.

Sealing cuts: Older gardening advice recommends sealing pruning cuts with white glue or pruning paint to prevent borers. Current research from the American Rose Society suggests sealing cuts is unnecessary in most of the US and that pruning paint can actually slow healing. Skip it unless you have a documented problem with cane borers in your area.

Light pruning for shrub roses and Knock Out types

Modern shrub roses — particularly the Knock Out series, which is the best-selling rose in the US — do not require hard pruning. They bloom reliably with minimal maintenance.

Light pruning approach for shrub roses:

• Remove about one-third of the plant height in early spring
• Cut out any dead, damaged, or crossing canes
• Deadhead spent flowers during the growing season by snipping off the old flower clusters
• Every 3–4 years, perform a more aggressive renewal pruning (cut to 12 inches) to reinvigorate an older plant

Knock Out and other landscape rose varieties were bred specifically for disease resistance and repeat bloom without deadheading. You can deadhead for aesthetics, but the plants rebloom reliably without it.

Pruning climbing roses

Climbing roses require a different approach than bush roses because the goal is to develop and maintain a permanent structure of main canes trained horizontally, from which flower-producing lateral shoots grow.

Once-blooming climbers (Rosa ‘New Dawn’, ‘American Pillar’, etc.)

Prune after the spring bloom is completely finished — late June to July in most US climates.

• Remove old canes that have finished their productive life (4–5-year-old canes become less productive)
• Keep the strongest new canes from the current season and train them horizontally on the support structure
• Shorten lateral shoots by one-third to promote branching
• Do not do major pruning in spring — you will remove all the flower buds

Repeat-blooming climbers

Lightly prune in early spring:

• Remove dead wood
• Shorten lateral shoots (the side shoots from main canes) to 2–3 buds
• Do not cut back main structural canes unless they are dead or severely diseased
• During the growing season, deadhead spent flowers to encourage reblooming

Deadheading during the growing season

Deadheading — removing spent flowers — keeps repeat-blooming roses producing new buds throughout the growing season. The cut location matters.

Correct deadheading technique:

1. Find the first 5-leaflet leaf below the spent flower (look for a leaf with 5 leaflets — roses also produce 3-leaflet leaves but they are less productive)
2. Cut at a 45-degree angle just above that 5-leaflet leaf
3. The remaining stem and leaf will push out a new flowering shoot within 4–6 weeks

Deadheading spent flowers all the way back to the first 5-leaflet leaf produces the next flush of large, quality blooms. Snipping just the flower head (leaving a long bare stem) produces weaker, smaller subsequent blooms.

Removing dead, diseased, and damaged wood

This is the one pruning task that should not wait for the annual spring pruning session. Dead and diseased wood spreads disease to healthy tissue and provides entry points for pests.

Remove immediately:

• Canes with black spot lesions that have spread to the stem itself
• Canes killed by rose cane borer (hollow with entry holes)
• Winter-killed canes (brown pith visible when cut; healthy canes have white or green pith)
• Canes broken by wind, deer, or mechanical damage

Make removal cuts to healthy wood — green outer tissue, white pith at the cut surface. Dispose of diseased prunings in the trash, not the compost pile.

Tools for pruning roses

Sharpen hand pruners at least once per growing season. A sharp blade makes cleaner cuts that heal faster. Disinfect pruner blades between plants if working in a garden with disease issues — dip in a 10% bleach solution or spray with Lysol between cuts.

For other spring garden maintenance tasks that pair with rose pruning, see our how to care for peonies guide — peonies also benefit from spring cleanup and have specific timing requirements tied to the same early spring window as roses.