• Photo of Pseudotsuga menziesii (Pseudotsuga menziesiis)

Plant Profile: Pseudotsuga menziesii

Taxonomy: Pseudotsuga menziesii

Names

Doug Fir, Douglas Fir, Douglas-fir, False Spruce

  • Photo of Pseudotsuga menziesii (Pseudotsuga menziesiis)

Phonetic Spelling:sue-do-SUE-ga men-ZEE-see-eye

Genus:Pseudotsuga

Species:menziesii

Family:Pinaceae

The Douglas Fir is a type of evergreen conifer belonging to the pine family. For optimal growth, it should be planted in areas that receive full sunlight to partial shade, preferably in acidic, well-drained loamy soil. In its early years, the tree exhibits a broad, spire-like pyramid shape, but as it matures, it tends to shed its lower branches. Young Douglas Firs are relatively easy to transplant, but they do not fare well in drought conditions.

Regarding pests and diseases, this tree is susceptible to various issues, including weevils, bark beetles, spider mites, aphids, and galls. Additionally, it may occasionally experience problems with heart rot, root rot, and needlecast.

Pseudotsuga menziesii Feature Summary

Pseudotsuga menziesii Image Gallery

Tags

#evergreen
#conifer
#evergreen tree
#Christmas tree

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Pseudotsuga menziesii Feature Summary

Attributes
South East Alaska to Mexico
Flowers
No flowers, 3" to 4" light brown to red-brown cones. Trees are monoecious.
3-6 inches
Leaves
Whole Plant Traits
Cultural Conditions
Full sun (6 or more hours of direct sunlight a day)
Acid (<6.0)
Good Drainage
Mountains
Loam (Silt)
Landscape
Frequent Disease Problems
Frequent Insect Problems

Pseudotsuga menziesii Attributes

Pseudotsuga menziesii: Country Or Region Of Origin

South East Alaska to Mexico

Pseudotsuga menziesii: Life Cycle

Annual
Biennial
Bulb
Perennial
Woody

Pseudotsuga menziesii Flowers

Pseudotsuga menziesii: Flower Description

No flowers, 3" to 4" light brown to red-brown cones. Trees are monoecious.

Pseudotsuga menziesii: Flower Size

1-3 inches
3-6 inches
< 1 inch
> 6 inches

Pseudotsuga menziesii Leaves

Pseudotsuga menziesii: Leaf Description

1 to 1.5 in. needles

Pseudotsuga menziesii: Woody Plant Leaf Characteristics

Broadleaf Evergreen
Deciduous
Needled Evergreen
Semi-evergreen

Pseudotsuga menziesii: Leaf Color

spa
Green

Pseudotsuga menziesii: Leaf Type

Compound (Pinnately , Bipinnately, Palmately)
Fronds
Needles
Sheath
Simple

Pseudotsuga menziesii: Hairs Present

No
Yes

Pseudotsuga menziesii: Leaf Length

< 1 inch
1-3 inches
3-6 inches
> 6 inches

Pseudotsuga menziesii Whole Plant Traits

Pseudotsuga menziesii: Plant Type

Annual
Bulb
Carnivorous
Edible
Epiphyte
Fern
Ground Cover
Herb
Herbaceous Perennial
Houseplant
Mushroom
Native Plant
Ornamental Grasses and Sedges
Perennial
Poisonous
Rose
Shrub
Succulent
Tree
Turfgrass
Vegetable
Vine
Water Plant
Weed
Wildflower

Pseudotsuga menziesii: Woody Plant Leaf Characteristics

Broadleaf Evergreen
Deciduous
Needled Evergreen
Semi-evergreen

Pseudotsuga menziesii: Habit/Form

Arching
Ascending
Broad
Cascading
Climbing
Clumping
Columnar
Conical
Creeping
Dense
Erect
Horizontal
Irregular
Mounding
Multi-stemmed
Multi-trunked
Open
Oval
Prostrate
Pyramidal
Rounded
Spreading
Vase
Weeping

Pseudotsuga menziesii: Growth Rate

Slow
Medium
Rapid

Pseudotsuga menziesii Cultural Conditions

Pseudotsuga menziesii: Light

Dappled Sunlight (Shade through upper canopy all day)
Deep shade (Less than 2 hours to no direct sunlight)
Full sun (6 or more hours of direct sunlight a day)
Partial Shade (Direct sunlight only part of the day, 2-6 hours)

Pseudotsuga menziesii: Soil pH

Acid (<6.0)
Alkaline (>8.0)
Neutral (6.0-8.0)

Pseudotsuga menziesii: Soil Drainage

Frequent Standing Water
Good Drainage
Moist
Occasional Flooding
Occasionally Dry
Occasionally Wet
Very Dry

Pseudotsuga menziesii: Available Space To Plant

12 inches-3 feet
12-24 feet
24-60 feet
3 feet-6 feet
6-feet-12 feet
Less than 12 inches
more than 60 feet

Pseudotsuga menziesii: NC Region

Coastal
Mountains
Piedmont

Pseudotsuga menziesii: USDA Plant Hardiness Zone

thermostat
4a
thermostat
4b
thermostat
5a
thermostat
5b
thermostat
6a
thermostat
6b

Pseudotsuga menziesii: Soil Texture

Clay
High Organic Matter
Loam (Silt)
Sand
Shallow Rocky

Pseudotsuga menziesii Stem

Pseudotsuga menziesii: Stem Is Aromatic

No
Yes

Pseudotsuga menziesii Landscape

Pseudotsuga menziesii: Problems

Allelopathic
Contact Dermatitis
Frequent Disease Problems
Frequent Insect Problems
Invasive Species
Malodorous
Messy
Poisonous to Humans
Problem for Cats
Problem for Children
Problem for Dogs
Problem for Horses
Short-lived
Spines/Thorns
Weak Wood
Weedy