When to Prune Fruit Trees in the PNW: A Month-by-Month Calendar

Pruning timing matters more than pruning technique for most home fruit trees. Prune at the wrong time of year and you invite disease, reduce next year's crop, or weaken the tree. Prune at the right time and even imperfect cuts produce strong growth and reliable fruit. This guide walks through the PNW pruning calendar by month, covering apples, pears, peaches and other stone fruit, figs, and general good-practice timing.

The big principle: prune most fruit trees during dormancy (January and February in the PNW) with a summer touch-up for size control, but some stone fruits have different rules due to disease pressure. We'll mark those as we go.

The two dormant-pruning windows

Most PNW fruit tree pruning happens in one of two windows:

January-February (full dormancy). This is the main dormant-pruning window. Trees are leafless, pruning wounds heal fastest as growth resumes in spring, and you can see the tree's structure clearly. Apples, pears, quince, figs, and most shade trees get pruned in this window. Aim for dry days when temperatures are above freezing but before bud break.

Late July through August (summer pruning). Summer pruning is about size control and sunlight penetration rather than structural shaping. Light summer cuts slow vigorous shoots that would otherwise overshadow fruit. Also the preferred window for stone fruits (peaches, cherries, apricots) because dormant pruning in wet PNW winters invites silver leaf disease and bacterial canker.

The month-by-month calendar

January: Main pruning month for apples and pears

On the Southern Oregon coast, January is when we do most of our heavy fruit tree pruning. The trees are fully dormant, winter rain has slowed briefly, and cuts heal cleanly before spring growth starts. Tasks for January:

• Structural pruning on apples and pears: remove crossing branches, water sprouts from last season, and any dead or diseased wood
• Renewal cuts on older trees: thin out one or two of the oldest scaffold branches to encourage new growth
• Prune grapes (though grapes can also be pruned in February)
• Prune quince, persimmon, figs (light pruning only for figs)

Avoid pruning stone fruit (cherries, peaches, apricots, plums) in January on the coast. Our wet winters increase disease risk for these species.

February: Finish dormant pruning

February is the backup window for anything you didn't finish in January. Willamette Valley and inland PNW gardeners often do their main pruning in February because their freeze risk is higher in January. Late February can also be the start of the summer pruning preparation. Tasks:

• Finish apple and pear dormant pruning
• Prune bare-root fruit trees at planting time (a cut back to 30 inches on whips encourages strong branching)
• Apply dormant oil spray during a dry stretch to control overwintering insects

March: Prune late or stop

Mid-March to early April is roughly when buds break on the coast. If you haven't pruned by now, evaluate whether to still cut or wait for summer. Light pruning is still acceptable in early March; by late March you're into growing-season pruning territory, which is different. Tasks:

• Last chance for dormant pruning before bud break
• Apply copper spray on peaches and nectarines for leaf curl just before buds swell
• Don't prune stone fruit yet (wait for summer)

April-May: Hands off for structural work

Avoid structural pruning during the spring flush. The tree is pouring energy into leaf and shoot growth and is vulnerable to disease. Limit yourself to:

• Removing any obviously dead wood you missed
• Rubbing off unwanted buds on young trees before they extend into shoots
• Thinning excess fruit once it sets (apples: thin to one fruit per cluster after June drop)

June: June drop and fruit thinning

After June drop (the natural shedding of excess fruit in early June), thin remaining fruit to improve size and prevent branch breakage. Aim for apples spaced 6 to 8 inches apart on a branch. Peaches and nectarines need heavier thinning: 6 to 8 inches between fruit. This is the single most impactful task for fruit quality on home trees.

July-August: Summer pruning and stone fruit pruning

Late July through August is the right time for:

• Pruning stone fruit. Cherries, peaches, apricots, plums all get pruned now rather than in winter. Dry summer weather reduces disease spread significantly.
• Summer pruning of apples and pears for size control. Cut back vigorous water sprouts by half. Thin leafy canopy to expose fruit to sunlight for better color and sugar development.
• Summer pruning of figs. Head back aggressive shoots to maintain a compact form.
• Hedge maintenance on espalier-trained trees. Keep side shoots tidy on formal training systems.

Choose a dry week for pruning. Wet summer cuts invite disease nearly as much as winter wet cuts.

September: Harvest focus, minimal pruning

September is harvest season for most PNW tree fruits. Focus on picking, not pruning. If you see broken branches from heavy fruit load, clean them up with a proper cut once the fruit is off.

October-November: Rest

Late fall is not a pruning window. Sap is descending, wounds heal slowly, and wet PNW conditions invite disease. Exception: removing a clearly dead or dangerous branch is always acceptable when safety requires.

December: Prepare, don't prune

Sharpen tools, clean and disinfect pruners with 10 percent bleach solution between trees, plan your January pruning. If you have apples or pears on a really mild week of December with no rain forecast, you can start dormant pruning early, but January is usually the better window on the coast.

Species-specific timing

Apples and pears

Main pruning in January-February during dormancy. Summer pruning in late July-August for size control. These are the most forgiving PNW fruit trees for pruning timing.

Cherries (sweet and sour)

Prune in summer only, ideally late July through August. Never prune cherries in wet winter weather on the PNW coast. Dormant pruning leads to silver leaf fungus and bacterial canker infections that can kill trees. The exception is removing a clearly dead branch any time.

Peaches and nectarines

Prune heavily each summer after harvest (August-September). These species fruit on one-year-old wood, so annual pruning maintains the balance of fruiting and replacement wood. Also apply copper in late winter for leaf curl.

Apricots and plums

Summer pruning after harvest, same reason as cherries. Avoid winter pruning in the wet PNW climate.

Figs

Light pruning in January or February. Figs fruit on current-season and previous-season wood, so hard pruning reduces the year's crop. Aim to maintain shape rather than dramatically reshape.

Quince and persimmon

Standard dormant pruning in January or February. Similar to apples.

Regional timing differences within the PNW

Southern Oregon coast (Langlois to Gold Beach): Dormant pruning window is roughly January 10 through March 1. Our mild climate gives us more workable days than inland, but also means stone fruit disease pressure is higher, so stick firmly to summer-only pruning for those species.

Willamette Valley and Portland metro: Dormant pruning window is later, roughly late January through mid-March. Freeze risk is higher, so avoid pruning when temperatures are forecast below 20°F within a week.

Central Oregon and east side: Dormant pruning in late February through March. Trees break dormancy later, so the window extends further into spring.

Tools and general practices

• Sharp bypass pruners. Anvil pruners crush tissue; bypass pruners make clean cuts. Sharpen or replace blades annually.
• Loppers for branches over 3/4 inch, saw for anything over 1.5 inches. Match the tool to the job.
• Disinfect between trees. 10 percent bleach solution or 70 percent isopropyl alcohol wipes prevent spreading disease.
• Make clean cuts. Cut just outside the branch collar (the swelling where branch meets trunk). Don't leave stubs; don't cut flush.
• Don't paint or seal cuts. Modern research shows sealants trap moisture and slow healing. Clean cuts heal best in open air.

FAQ: pruning fruit trees in the PNW

Can I prune fruit trees in the summer?

Yes, and for stone fruit (cherries, peaches, apricots, plums) you should only prune in summer because of disease pressure in our wet winters. For apples and pears, summer pruning is optional and focuses on size control rather than structural work.

What happens if I prune at the wrong time?

Wrong-time pruning of stone fruit is the biggest risk, as it can introduce silver leaf or bacterial canker. For apples and pears, wrong-time pruning (spring growth flush) mostly reduces that year's crop and stresses the tree, but rarely kills it.

How much can I safely prune off in one year?

No more than 25 to 30 percent of the canopy in a single year. Over-pruning stimulates excessive water sprout growth and weakens the tree. For overgrown old trees, spread restoration pruning over 3 to 5 years.

Do I need to prune my fruit trees every year?

Yes, for best production. An unpruned fruit tree produces smaller fruit, develops broken branches from overcropping, and becomes difficult to manage. Annual light pruning is far easier than occasional heavy pruning.

Where to learn more

OSU Extension publishes detailed pruning guides specific to each fruit tree species. The bare-root plants guide covers planting and first-year shaping for new trees. For pruning help on established trees at Dragonfly Farm & Nursery, stop by during winter pruning season and we can walk through your questions with you.