North America Native Plant

Bigcone Douglas-fir

Botanical name: Pseudotsuga macrocarpa

USDA symbol: PSMA

Life cycle: perennial

Habit: tree

Native status: Native to the lower 48 states  

Bigcone Douglas-Fir: California’s Majestic Native Conifer for Large Landscapes If you’ve got the space and live in Southern California, the bigcone Douglas-fir (Pseudotsuga macrocarpa) might just be the statement tree your landscape has been waiting for. This impressive native conifer isn’t your average backyard tree – it’s a true California ...

Bigcone Douglas-Fir: California’s Majestic Native Conifer for Large Landscapes

If you’ve got the space and live in Southern California, the bigcone Douglas-fir (Pseudotsuga macrocarpa) might just be the statement tree your landscape has been waiting for. This impressive native conifer isn’t your average backyard tree – it’s a true California original that brings both ecological value and striking beauty to the right setting.

Meet the Bigcone Douglas-Fir

Don’t let the Douglas-fir name fool you – this tree is actually a unique species that’s quite different from its more famous Pacific Northwest cousin. The bigcone Douglas-fir is a California native that’s perfectly adapted to our Mediterranean climate and challenging growing conditions.

As a perennial tree with a single trunk, this species can reach an impressive mature height of 75 feet, making it a true giant in the landscape. At 20 years, you can expect it to reach about 24 feet tall – so patience is definitely a virtue with this slow-to-moderate grower.

Where It Calls Home

The bigcone Douglas-fir is exclusively native to California, where it naturally grows in the mountainous regions of Southern California. This tree is a true Californian through and through, having evolved specifically to thrive in our unique climate conditions.

Why Choose Bigcone Douglas-Fir for Your Landscape?

This native beauty offers several compelling reasons to consider it for the right space:

  • Drought Champion: With high drought tolerance and low water needs, it’s perfect for water-wise landscaping
  • Low Maintenance: Requires minimal fertility and care once established
  • Long-Lived: This is a tree for generations, with a long lifespan that makes it a lasting investment
  • Native Value: Supporting local ecosystems by choosing California natives
  • Distinctive Features: Large, conspicuous brown cones and attractive green foliage

The Reality Check: Space and Placement

Before you fall head over heels for this tree, let’s talk about the elephant in the room – size. At 75 feet tall when mature, the bigcone Douglas-fir needs serious space. This isn’t a tree for small suburban lots or cozy courtyard gardens.

It’s also worth noting that this tree has low fire tolerance, which is an important consideration in fire-prone areas of California. Additionally, it’s shade intolerant, so it needs that prime sunny spot in your landscape.

Perfect Garden Settings

The bigcone Douglas-fir shines in:

  • Large residential properties with ample space
  • Public parks and natural areas
  • Drought-tolerant and native plant landscapes
  • Properties seeking a majestic specimen tree
  • Rural or semi-rural settings

Growing Conditions That Make It Happy

This California native has some specific preferences that, fortunately, align well with our climate:

  • Soil: Prefers coarse to medium-textured soils with good drainage
  • Water: Low moisture requirements once established (12-40 inches annual precipitation)
  • Sun: Full sun – remember, it’s shade intolerant
  • pH: Slightly acidic to neutral soils (5.0-7.0)
  • Climate: Thrives in USDA zones 8-10 with at least 200 frost-free days
  • Temperature: Can handle temperatures down to -13°F

Planting and Care Tips

Getting your bigcone Douglas-fir off to a good start is crucial for long-term success:

  • Spacing: Plant 300-1200 trees per acre if doing mass plantings – this tree needs room!
  • Planting Method: Available as container plants or bare root
  • Root Depth: Ensure soil depth of at least 30 inches for proper root development
  • Cold Stratification: Seeds require cold stratification if you’re growing from seed
  • Establishment: Be patient – seedlings have medium vigor and the tree has a moderate growth rate
  • Maintenance: Once established, minimal care needed thanks to its drought tolerance

Seasonal Interest

While the bigcone Douglas-fir isn’t flashy with seasonal color changes, it offers year-round interest with:

  • Attractive evergreen foliage that provides consistent color
  • Distinctive large brown cones that are quite conspicuous
  • Impressive stature that creates a strong landscape presence
  • Early spring blooming period with small yellow flowers

The Bottom Line

The bigcone Douglas-fir is a spectacular choice for gardeners who have the space, live in the right climate zone, and want to incorporate a true California native into their landscape. It’s not for everyone – you need room, patience, and the right growing conditions – but for those who can accommodate its needs, it’s a remarkable tree that connects your garden to California’s natural heritage.

If you’re working with a smaller space or different growing conditions, consider exploring other California native trees that might be better suited to your specific situation. But if you’ve got the space and the vision for a majestic native conifer, the bigcone Douglas-fir could be exactly what your landscape needs to make a lasting statement.

How

Bigcone Douglas-fir

Grows

Growing season

Spring

Lifespan

Long

Growth form & shape

Single Stem and Erect

Growth rate

Moderate

Height at 20 years

24

Maximum height

75.0

Foliage color

Green

Summer foliage density

Moderate

Winter foliage density

Moderate

Foliage retention

No

Flowering

No

Flower color

Yellow

Fruit/seeds

Yes

Fruit/seed color

Brown

Allelopath

No

Nitrogen fixing

None

Toxic

None

C:N Ratio

High

Fire Resistant

No

Foliage Texture

Medium

Low-growing Grass

No

Resproutability

No

Coppice Ability

No

Bloat

None

Bigcone Douglas-fir

Growing Conditions

Adapted to Coarse Soil

Yes

Adapted to Medium Soil

Yes

Adapted to Fine Soil

No

Anaerobic tolerance

None

CaCO₃ tolerance

None

Cold Stratification

Yes

Drought tolerance

High

Nutrient requirement

Low

Fire tolerance

Low

Frost-free days minimum

200

Hedge tolerance

None

Moisture requirement

Low

pH range

5.0 to 7.0

Plants per acre

300 to 1200

Precipitation range (in)

12 to 40

Min root depth (in)

30

Salt tolerance

None

Shade tolerance

Intolerant

Min temperature (F)

-13

Cultivating

Bigcone Douglas-fir

Flowering season

Early Spring

Commercial availability

Routinely Available

Fruit/seed abundance

Medium

Fruit/seed season

Summer to Fall

Fruit/seed persistence

No

Propagated by bare root

Yes

Propagated by bulb

No

Propagated by container

Yes

Propagated by corm

No

Propagated by cuttings

No

Propagated by seed

Yes

Propagated by sod

No

Propagated by sprigs

No

Propagated by tubers

No

Seed per pound

4140

Seed spread rate

Slow

Seedling vigor

Medium

Small grain

No

Vegetative spread rate

None

Bigcone Douglas-fir

Classification

Group

Gymnosperm

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Coniferophyta - Conifers

Subdivision
Class

Pinopsida

Subclass
Order

Pinales

Family

Pinaceae Spreng. ex Rudolphi - Pine family

Genus

Pseudotsuga Carrière - Douglas-fir

Species

Pseudotsuga macrocarpa (Vasey) Mayr - bigcone Douglas-fir

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA