Plant Douglas Fir – Flare at Grade

Plant Douglas Fir – Flare at Grade guide illustration

Plant a small balled-and-burlapped Douglas fir with the root flare at the soil line, leave 24 to 60 feet of room, and water it for two or three summers.

Planting Douglas Fir care summary diagram

Plant a small balled-and-burlapped tree, with the flare at grade

FactorRecommendedAvoid
WhenSpring or fall while you can water; a container on any workable dayDo not plant in a midsummer drought you cannot soak
StockA small balled-and-burlapped tree, or a young containerDo not dig a large wild tree, and do not wait until the plant is already a 20-foot specimen
HoleTwo to three times as wide as the root ball, and no deeper, with the flare at or slightly above the soilDo not bury the flare, and do not dig a tight, deep cup that holds water
MixThe soil you dug, loosenedDo not pile compost on the flare, and do not leave burlap or a wire basket around the trunk

Douglas fir moves well when it is still small. [1] A balled-and-burlapped tree is the usual landscape stock. [2] Find the root flare before you dig, and set that flare at or slightly above the finished grade so the trunk does not sit in a well. [3]

  1. Choose a day in spring or fall when you can water. Slide a container plant on any workable day.
  2. Find the root flare by brushing soil off the top of the ball until the trunk widens.
  3. Dig a hole two to three times as wide as the ball, and no deeper, so the ball sits on undug soil.
  4. Set the flare level with the soil, or an inch or two high if the ground settles.
  5. Cut circling roots. Cut away burlap and a wire basket from the top of the ball so they do not girdle the trunk.
  6. Backfill with the soil you dug. Do not pile soil on the flare. Soak to the depth of the ball.

How deep do I plant a Douglas fir?

No deeper than the root ball. The flare sits level with the soil, or a little high.

Leave 24 to 60 feet of room, and water it for two or three summers

Leave 24 to 60 feet from buildings, wires, and other large trees, because a landscape Douglas fir needs that spread if you want the lower branches to stay on. A tree three feet from the foundation will hit the eaves, and cutting those lower limbs later leaves a bare trunk. A landscape tree reaches about 40 to 80 feet tall and 12 to 20 feet wide, so the hole is only the start. [4]

  1. Measure 24 to 60 feet from the house, the driveway, and overhead wires before you dig.
  2. Mulch two to three inches deep, and keep the mulch off the trunk.
  3. Water the planting hole through the first two or three summers when rain fails, about one to two gallons per inch of trunk diameter several times a week in heat.
  4. After that, watering follows the grown-plant plan on How to Grow Douglas Fir.

How far apart should you plant Douglas fir?

Leave 24 to 60 feet from buildings and other large trees. Do not set a landscape tree against the house.

If you buried the flare or parked the tree against the house, reset the young plant now.

FAQ

Should I plant Douglas fir in spring or fall?

Spring or fall while you can water. Skip a midsummer drought you cannot soak. A container plant can go in on any workable day.

Should I start from seed or buy a nursery tree?

Buy a small nursery tree if you want a landscape plant this decade. Seed is a separate start on Growing Douglas Fir From Seed.

Recommended plants

References

  1. [1] NC State Extension - https://plants.ces.ncsu.edu/plants/pseudotsuga-menziesii/
  2. [2] University of Florida IFAS - https://edis.ifas.ufl.edu/publication/ST528
  3. [3] Colorado State Forest Service - https://csfs.colostate.edu/forests-trees/selecting-planting-and-caring-for-trees/how-to-plant-a-tree/
  4. [4] The Morton Arboretum - https://mortonarb.org/plant-and-protect/trees-and-plants/douglas-fir/

This note is part of Pseudotsuga Guides.

More planting notes by plant are gathered in Planting Guides.

Updated: Reviewed by Bosquelle Editors

This guide is written for real gardens, not perfect climates. Results vary with site, season, and plant choice. We draw on multiple sources and practical experience; treat the steps here as honest guidance, not a promise that every bed will behave the same.