The Toughest, Cold-Hardiest Shade Tree for Northern Yards

Northern Acclaim Honeylocust (Gleditsia triacanthos var. inermis 'Harve') was selected at North Dakota State University for one job: surviving brutal northern winters. It's an exceptionally cold-hardy, zone 3 honeylocust that's also thornless, seedless, and tolerant of poor soil, drought, and road salt — making it one of the toughest broad shade trees you can plant in Minnesota. You get the classic honeylocust virtues — fast growth, fine ferny foliage, lawn-friendly dappled shade, and golden fall color — on a tree built for the harshest sites. Whether you're planting fast shade in Lakeville, a boulevard tree in St. Paul, or a dependable shade tree in the coldest exurbs, Northern Acclaim delivers where hardiness matters most.

Northern Acclaim Honeylocust Plant Details

Northern Acclaim Honeylocust Uses in Minnesota Landscapes

Toughest Shade Tree for Cold, Harsh Sites

Bred at NDSU for the northern plains, Northern Acclaim handles bitter cold, poor soil, drought, and salt better than almost any shade tree — the go-to honeylocust for exposed rural-edge lots and the coldest outer-ring suburbs where other trees struggle.

Fast Boulevard and Lawn Tree

Its fast growth and tolerance of urban stress make it an excellent boulevard and street tree, and a reliable fast-shade choice for an open lawn in Edina or Plymouth. Thornless and seedless, it stays clean and easy to manage.

Lawn-Friendly Light Shade

The fine, dappled shade lets grass and perennials thrive right up to the trunk, so you get shade without sacrificing the lawn or garden beneath.

Best Time to Plant Northern Acclaim Honeylocust in Minnesota

Honeylocust is deciduous, so you have two good planting windows in the Twin Cities:

Spring (late April–May), once the ground has thawed, is excellent — the tree gets the full growing season to establish before its first winter.

Fall (September–mid-October) also works well. Plant at least six weeks before the ground freezes so roots can settle in. Avoid mid-summer planting when heat stress is highest, and never plant into frozen ground.

How to Plant Northern Acclaim Honeylocust

1. Dig wide, not deep — the hole should be 2–3 times the root ball width but only as deep as the ball itself. In heavy clay, dig even wider.
2. Check drainage — if water pools in the hole, break through clay hardpan or mound-plant slightly to keep roots out of standing water.
3. Backfill with the native soil mixed with 20–30% compost. Don't create a pure-compost "container" in clay.
4. Set the tree so the top of the root ball sits at or just above grade. Allow room for the 30–35 foot mature spread.
5. Build a 3–4 inch water basin around the root zone to direct water to the roots; flatten it before winter.
6. Mulch with 2–3 inches of shredded bark or wood chips, kept 2 inches from the trunk, and wrap the young trunk the first winter or two.

Watering Northern Acclaim Honeylocust in Minnesota

First Year Watering Schedule

Weeks 1–2: water every 1–2 days, deep and slow. Month 1–2: every 3–4 days. Month 3 through fall: every 5–7 days during active growth, less when rainfall is adequate. Stop watering 2–3 weeks before the ground freezes in late October so the tree can harden off for winter.

After Year One

Established Northern Acclaim Honeylocust is notably drought-tolerant, needing supplemental water mainly during extended dry spells (2+ weeks with no rain). Water deeply to 6–8 inches every 7–14 days during drought, and let natural rainfall do most of the work.

Will Northern Acclaim Honeylocust survive a Minnesota winter? Absolutely — it was bred at NDSU for zone 3 and is reliable to -40°F or colder, making it one of the hardiest shade trees available.

How is it different from Skyline or Shademaster? Northern Acclaim is bred specifically for extreme cold hardiness (zone 3), so it's the better choice for the coldest sites, while Skyline and Shademaster are excellent zone 4 boulevard trees.

Is it thorny or messy? No — it's thornless and seedless, one of the cleanest, lowest-litter shade trees you can plant.

Can grass grow under it? Yes — its fine, dappled shade is lawn-friendly, letting grass and perennials thrive right up to the trunk.

You May Also Like

• Northern Sentinel Honeylocust — the narrow columnar, cold-hardy version of this line.
• Skyline Honeylocust — the classic uniform pyramidal green honeylocust.
• Shademaster Honeylocust — a vigorous, upright-arching green honeylocust.
• Bur Oak — a majestic, bombproof native shade tree for tough sites.

How Many Northern Acclaim Honeylocust Do I Need?

One tree shades a patio or south lawn — give a single specimen 30–35 feet of clearance from the house and other large trees so the spreading crown develops evenly. For a boulevard or driveway row, space trees 30–35 feet apart; because the dappled shade is lawn-friendly, rows can run right along turf without killing the grass beneath. On windy acreage, a staggered double row at 25–30 feet doubles as a tough, salt-proof shelterbelt backbone.

Northern Acclaim Honeylocust Season-by-Season in Minnesota

• Spring: One of the later trees to leaf out — a built-in frost-dodging habit — then the fine, ferny compound leaves unfurl a fresh bright green.
• Summer: Fast growth and light, dappled shade that keeps the lawn alive underneath; small fragrant flowers hum with bees in early summer.
• Fall: Foliage turns clear golden yellow, and the tiny leaflets practically disappear into the lawn — the easiest fall cleanup of any large shade tree.
• Winter: An open, picturesque branch structure that shrugs off -40°F; no pods or thorns means nothing to pick up come spring.

At a Glance

✔ Deer-Resistant   ✔ Salt-Tolerant   ✔ Drought-Tolerant   ✔ Pollinator-Friendly

Plant It With

• Northern Sentinel Honeylocust — the narrow columnar version of the same extra-hardy line for tighter spots.
• Skyline Honeylocust — the classic pyramidal boulevard honeylocust for zone 4 sites.
• Shademaster Honeylocust — the vigorous, upright-arching premium lawn tree of the family.
• Bur Oak — the bombproof native prairie oak; pair them for a tough, generations-long canopy.

Is Northern Acclaim Honeylocust Right for Your Yard?

If your site is cold, exposed, salty, or has poor compacted soil — and you still want fast shade with grass growing beneath — this is the tree. It's the honeylocust to choose in the coldest exurbs and open prairie-edge lots where zone 4 selections run a risk. Not a fit if you want deep, dense shade or heavy screening: its canopy is intentionally light and dappled, so for a dark, cool block of shade choose a maple or linden instead.