Fast-Growing Trees in Oregon: A Practical Guide for Homeowners
What Does “Fast Growing” Really Mean?
In tree terms, “fast growing” typically means adding 2–6+ feet of height per year after establishment. That doesn’t happen overnight — young trees often focus first on roots before they rush upward. But over time, you’ll notice a dramatic change in canopy size and shade coverage.
Top Fast-Growing Trees for Oregon
These selections thrive in our Portland area climate and are well-suited for shade, screening, or ornamental planting.
1. Hybrid Poplar (Populus spp.) — Fastest of the Fast
- Growth rate: Up to 5–8 feet per year once established
- Mature size: 40–60+ feet tall
- Best uses: Shade, privacy screens, windbreaks
Hybrid poplars are among the most rapidly growing trees available, pushing growth quickly in sunny, moist sites. This makes them ideal for replacing old trees or creating shade fast. But because they grow so quickly, their wood tends to be softer and more prone to breakage in heavy wind or snow, so give them space.
2. Red Alder (Alnus rubra) — Native Speedster
- Growth rate: Up to 3 feet per year
- Mature size: 50–70 feet
- Best uses: Shade, soil improvement, wildlife habitat
A Northwest native, Red Alder grows quickly and improves soil by fixing nitrogen — great for reforestation, slope stabilization, or filling a yard with shade and wildlife value.
3. Bigleaf Maple (Acer macrophyllum) — Big Leaves, Fast Growth
- Growth rate: 1.5–2 feet per year
- Mature size: Up to 80 feet
- Best uses: Shade, native landscapes
Bigleaf maple isn’t the fastest in terms of feet per year, but its enormous leaves and broad canopy quickly create a lush, shady space once established. It also plays beautifully with understory plantings and supports birds and pollinators.
4. Douglas Fir (Pseudotsuga menziesii) — A Classic Evergreen
- Growth rate: 2–3+ feet per year
- Mature size: 80–100+ feet
- Best uses: Evergreen screening, windbreaks, large focal trees
Oregon’s iconic native conifer is robust and versatile. It isn’t as dramatic in early growth as hybrid poplar, but it adds steady height and form while providing deep, year-round evergreen coverage.
5. Western Red Cedar (Thuja plicata) — Traditional Evergreen
- Growth rate: 1.5–2 feet per year
- Mature size: 60–100 feet
- Best uses: Hedges, privacy screens, evergreen structure
Western Red Cedar offers dense evergreen coverage that fits many Oregon landscapes. It’s classic for hedges or privacy walls — and its strong wood stands up well to PNW weather.
6. London Planetree (Platanus × acerifolia) — Urban Strong Grower
- Growth rate: 2–3+ feet per year (typical)
- Mature size: 55–70 feet
- Best uses: Shade, street trees
Planetree cultivars like Bloodgood or Liberty combine fast growth with urban toughness, handling heat, pollution, and drought once established. Colorful exfoliating bark and broad shade make it a favorite for large yards and public spaces.
7. Dawn Redwood (Metasequoia glyptostroboides) — Fast & Unusual Deciduous Conifer
- Growth rate: Up to ~4 feet per year in ideal sites
- Mature size: 70–100 feet
- Best uses: Focal points, large shade trees
This striking conifer loses its needles in autumn, but sprouts back quickly each spring with vibrant green new growth. It’s a classic choice for parks or statement planting.
Fast-Growing Trees for Full Sun
Most of the species above excel in full sun — including hybrid poplar, planetree, and maples. Full sun helps trees photosynthesize more, which supports rapid growth. Always pair the sun with good soil and regular watering as the tree establishes.
Low-Maintenance Fast-Growing Trees in Oregon
If you want fast growth with minimal fuss, focus on:
- Western Red Cedar — minimal pruning, year-round greenery
- Douglas Fir — native resilience
- Red Alder — natural soil improvement and minimal care
These species tend to adapt to local conditions without a lot of extra inputs once established.
Evergreen Fast-Growing Trees for Privacy
- Western Red Cedar (dense and tall)
- Douglas Fir (vertical height and winter presence)
- Green Giant Arborvitae (excellent windbreak or screen)
Even though Arborvitae wasn’t on official lists, it’s widely recognized locally as one of the go-to fast growers for screening when used responsibly.
Planting Tips Before You Start
Before planting any fast grower in Oregon:
- Match the tree to the space: big trees need a big space.
- Water well the first 2–3 years.
- Consider structural pruning early to avoid weak branch formation.
- Plan for mature size — roots and canopy need room.
Fast-growing trees are exciting, but thoughtful selection means healthier trees and a landscape that lasts.
Final Thoughts: Grow Smart With Local Expertise
Fast-growing trees can transform your outdoor space. They bring shade, privacy, and beauty more quickly than many other landscape options. But you need to plant the right species for that fast-growing effect.
At MonkeyMan Tree Service, we help Portland homeowners choose the right trees for their goals and support them with planting plans, pruning, and maintenance that keep trees thriving long-term.
Thinking about planting trees this season? Contact MonkeyMan for expert tree selection advice, planting services, and professional care right here in the Portland, Oregon area