Plant Eastern Hemlock – Root Flare at Grade

Plant Eastern Hemlock – Root Flare at Grade guide illustration

Plant a small balled-and-burlapped eastern hemlock with the root flare at the soil line, leave 24 to 60 feet for a specimen or 3 to 4 feet for a hedge, and water it through the first year.

Planting Eastern Hemlock care summary diagram

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

FactorRecommendedAvoid
WhenEarly spring 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

eastern hemlock is sold as balled-and-burlapped stock because the roots are fibrous, and it moves well while it is still small. [1] Find the root flare before you dig, and set that flare at grade so the trunk does not sit in a well. [2] The tree transplants well when you keep the ball intact and the flare at the soil line. [3]

  1. Choose a day in early 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 an eastern hemlock?

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

Leave 24 to 60 feet for a specimen, or 3 to 4 feet for a hedge, and water the first year

Leave 24 to 60 feet from buildings, wires, and other large trees if you want a specimen with its lower branches on the tree. [4] A hedge row can sit 3 to 4 feet apart, then it still needs the same flare at grade. A tree three feet from the foundation will hit the eaves, and cutting those lower limbs later leaves a bare trunk. Mulch two to three inches deep, keep it off the trunk, and water through the first year whenever a week passes without rain. After that, watering follows the grown-plant plan on How to Grow Eastern Hemlock.

  1. Measure 24 to 60 feet from the house, the driveway, and overhead wires for a specimen, or 3 to 4 feet between plants for a hedge.
  2. Mulch two to three inches deep, and keep the mulch off the trunk.
  3. Water the planting hole through the first year when rain fails, enough to soak the ball, then let it drain.
  4. Do not build a watering saucer that holds a puddle against the trunk.

How far apart should you plant eastern hemlock?

Leave 24 to 60 feet from buildings and other large trees for a specimen. A hedge can sit 3 to 4 feet apart.

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

FAQ

Should I plant eastern hemlock in spring or fall?

Early 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 Eastern Hemlock From Seed.

Recommended plants

References

  1. [1] Penn State Extension - https://extension.psu.edu/the-state-tree-of-pennsylvania-eastern-hemlock
  2. [2] Save Georgia's Hemlocks - https://www.savegeorgiashemlocks.org/Downloads/Resources_page/Other_SGH_Instructions_&_Reference_Materials/SGH_Transplanting_a_Hemlock_2-7-23.pdf
  3. [3] The Morton Arboretum - https://mortonarb.org/plant-and-protect/trees-and-plants/eastern-hemlock/
  4. [4] NC State Extension - https://plants.ces.ncsu.edu/plants/tsuga-canadensis/

This note is part of Tsuga 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.