Balsam fir

Sun

Full sun to partial shade; light afternoon shade can help in the warmer part of its range.

Water

Moderate to high; keep the root zone evenly moist but not waterlogged, especially during establishment.

Soil

Cool, moist, well-drained, acidic soil rich in organic matter. Avoid chalky, compacted, drought-prone or poorly drained ground.

Height

45-75 ft (14-23 m)

Spread

20-25 ft (6-7.6 m)

Foliage

Evergreen. Short, flat, aromatic, dark green needles with two pale bands underneath. Young trees have smooth grey bark with resin blisters; upright purple cones mature brown and break apart on the branches.

Growth

Slow to moderate, depending on moisture and summer temperatures.

Care needed

Medium

• Cold hardy
• Wildlife
• Fragrant

Northern hemisphere months. In Australia, shift them by six.

Difficulty

Moderate

Toughness

Needs looking after

Pick your zone, country, light and whether you have pets.

1. Planting day

   7 ft (2.2 m)

2. After 1 year

   9 ft (2.8 m)

3. After 2 years

   11 ft (3.5 m)

4. After 3 years

   13 ft (4.1 m)

5. After 5 years

   18 ft (5.4 m)

About 26 years to full size.

From a typical nursery size, at an average rate for this kind of plant. A rule of thumb, not a forecast.

Cats and dogs

Mildly toxic: may upset a stomach

Native to

the US and Canada

Growth rate

Slow

• Plant with the root flare at soil level, leaving enough room for the mature canopy.
• Water deeply during dry spells for the first two or three growing seasons; established trees also need help during prolonged drought.
• Apply 2-3 in (5-8 cm) of organic mulch over the root zone, keeping it clear of the trunk.
• Avoid routine feeding; use a soil test before correcting nutrient deficiencies.
• Protect the shallow roots from digging, heavy foot traffic and nearby construction.

Pruning. Prune in late winter or early spring to remove dead, damaged or crossing branches, retaining a single central leader. Avoid topping or cutting into bare old wood, which rarely produces useful new growth.

Early spring

Plant when the soil is workable and not waterlogged; water thoroughly and mulch.

Spring

Check new shoots for distorted growth, aphids and feeding damage before treating anything.

Summer

Check soil moisture beneath the mulch and water deeply during dry weather.

Early autumn

Plant in mild districts while the soil is still warm; in very cold districts, favour spring planting.

Late autumn

Water before the ground freezes if autumn has been dry, and renew mulch where needed.

Late winter

Remove damaged branches and check that young trees still have one sound central leader.

• Use as a specimen in a large lawn where its symmetrical outline and lower branches have room to develop.
• Plant in loose groups with birches and other cold-climate trees for a woodland edge.
• Use as an evergreen backdrop to shade-tolerant shrubs and ferns on moist, acidic ground.
• Place where its dark foliage provides winter structure and contrasts with pale bark or snow.

Garden styles it suits: Woodland, Wildlife garden, Winter interest, Mountain lodge, New England and Traditional.

Plant it with: Paper birch, Red maple, Rhododendrons, Mountain laurel, Foamflower and Christmas fern.

Wildlife: Provides year-round shelter and nesting cover for birds. Seeds feed squirrels and seed-eating birds, and the foliage supports several native moths in its North American range.

• Heat and drought stress cause thinning, browning and decline: mulch, water during dry spells and avoid planting in hot, exposed sites.
• Root rot develops in waterlogged soil: improve drainage before planting and avoid repeated irrigation of already wet ground; severely affected trees may need removal.
• Balsam woolly adelgid produces white woolly patches on bark and can cause swollen shoots and decline: have the pest identified and consult an arborist about treatment or removal.
• Spruce budworm caterpillars damage buds and new needles: monitor spring growth; small trees may be treated with a locally approved Bacillus thuringiensis product while larvae are young.

Not known to be toxic to people, cats, dogs or horses. Chewing needles or bark may cause mouth irritation or stomach upset, and sticky resin can irritate sensitive skin. Do not allow pets to drink Christmas-tree stand water, especially if additives have been used.

• Fraser fir (Abies fraseri)

  Very similar, but Fraser fir usually has conspicuous bracts projecting beyond the cone scales; balsam fir generally has bracts hidden within the cone.

• White spruce (Picea glauca)

  White spruce has stiff, four-sided needles that roll between your fingers and cones that hang down. Balsam fir has flat needles and upright cones.

• Eastern hemlock (Tsuga canadensis)

  Eastern hemlock has finer, shorter needles, a usually nodding leader and small hanging cones. Balsam fir has a more rigid upright outline and much larger upright cones.

The name balsamea and the common name balsam fir refer to the fragrant resin, traditionally known as Canada balsam, held in blisters in the bark.

Propagation. Grow from seed collected from mature cones before they break apart. Seed usually benefits from cold, moist stratification before spring sowing; named dwarf selections are generally propagated by grafting.

Accepted botanical name

Abies balsamea

In the US and Canada

Native in Canada, the lower 48 states and St. Pierre and Miquelon.

Native range

Alberta, Connecticut, Iowa, Labrador, Maine, Manitoba, Maryland, Masachusettes, Michigan, Minnesota, New Brunswick and New Hampshire.

Measured

Soil pH 4 to 6. Average height 660 cm.

Sources: GBIF (CC BY 4.0), USDA PLANTS and Trefle (CC BY 4.0). The care and design notes are LandscapeGPT's own.