Green Mountain Sugar Maple

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The Scorch-Resistant Native Sugar Maple for Tough Minnesota Summers Green Mountain Sugar Maple (Acer saccharum 'Green Mountain') is a heat- and drought-tolerant selection of our na tive sugar maple. Its thick, dark-green, leathery summer leaves resist the leaf scorch that plagues ordinary sugar maples in hot, dry spells, and it builds a handsome oval-pyramidal crown around a strong central leader. Hardy all the way to USDA zone 3, it ends the season in a dependable orange-red to red blaze. Whether you're planting a stately lawn specimen in Plymouth, a long-lived shade tree in Eden Prairie, or a native-canopy restoration in Maple Grove, Green Mountain is one of the toughest sugar maples you can grow. Green Mountain Sugar Maple Plant Details Attribute Detail Scientific Name Acer saccharum 'Green Mountain' Common Names Green Mountain Sugar Maple, Sugar Maple, Hard Maple, Rock Maple Mature Height 50–60 feet Mature Width 35–45 feet Growth Rate Moderate — about 1–2 feet per year in Minnesota Sun Full sun (6+ hrs); tolerates light shade Water Moderate. Appreciates consistent moisture but tolerates heat and dry spells better than the species thanks to its scorch-resistant foliage. USDA Zones 3–8 (Twin Cities is zone 4b–5a) — exceptionally cold-hardy Soil Prefers deep, well-drained loam. Tolerates clay-loam but dislikes compacted, soggy, or salty soil — give it good drainage. Foliage Deciduous — thick, leathery, dark-green leaves that resist summer scorch Fall Color Dependable orange-red to red Winter Hardiness Reliable to USDA zone 3 — among the hardiest sugar maples available Deer Resistance Moderately deer-resistant; protect the trunk from buck rub the first 2 winters Salt Tolerance Low — keep away from heavy road-salt spray Native Status Sugar maple (Acer saccharum) is native to Minnesota and much of eastern North America Green Mountain Sugar Maple Uses in Minnesota Landscapes Long-Lived Lawn and Shade Specimen Green Mountain's symmetrical oval-pyramidal form and dense canopy make it a classic front- or back-yard shade tree that just gets better with age. The leathery foliage stays clean and dark green through hot July weather when lesser sugar maples brown at the edges, then turns a reliable orange-red in fall. Native and Restoration Plantings As a true Minnesota native, sugar maple is a backbone of our hardwood forests, and Green Mountain slots naturally into native and naturalized landscapes. It's a strong choice for re-establishing canopy on larger Twin Cities properties and wooded lots. Allee and Boulevard Plantings on Wide Sites Its strong central leader and uniform crown line a long drive or wide right-of-way handsomely in matched plantings. Give it room and good drainage, and keep it away from the heaviest road-salt zones. Best Time to Plant Green Mountain Sugar Maple in Minnesota Plant in spring (late April–May, after the ground thaws) for a full season of root establishment, or in early fall (late August–early October) while the soil is still warm. Get it in the ground at least six weeks before the ground freezes — typically mid-November in the Twin Cities. Avoid mid-summer planting in heat and humidity. Hardy deciduous trees and shrubs, including balled-and-burlapped stock, plant successfully through the end of October, and in spring once the ground thaws in late April. Sugar maples especially benefit from the lower transplant stress of these cooler windows. How to Plant Green Mountain Sugar Maple Dig wide, not deep — 2–3x the root ball width but only as deep as the ball is tall, so the root flare sits at or slightly above grade. Prioritize drainage — sugar maples resent wet feet and compacted soil, so if water pools in the hole, break through any clay hardpan or mound-plant to improve drainage. Backfill with the native soil mixed with 20–30% compost; don't build a pure-compost "container" the roots won't grow beyond. Spacing — give a single specimen 30–35 feet of clearance from buildings and other large trees; space an allee 35–40 feet apart. Build a 3–4 inch watering ring to direct water to the roots, then flatten it before winter so it doesn't trap ice. Mulch with 2–3 inches of shredded bark or wood chips in a wide ring, kept 2 inches off the trunk. Never use gravel mulch in Minnesota — it doesn't insulate roots. Watering Green Mountain Sugar Maple in Minnesota First Year Watering Schedule Weeks 1–2: water deeply and slowly every 1–2 days. Month 1–2: every 3–4 days. Month 3–6: every 5–7 days during active growth, easing off when rainfall is adequate (the Twin Cities average about 3 inches a month from June through August). Stop watering 2–3 weeks before the ground freezes — usually late October — so the tree doesn't push tender growth heading into winter. After Year One Once established, Green Mountain is more drought-tolerant than most sugar maples but still appreciates a deep soak during extended dry spells (two-plus weeks with no rain and temps above 80°F). Soak to 8–12 inches every 7–14 days when needed and let natural rainfall do the rest. Will Green Mountain Sugar Maple survive a Minnesota winter? Yes — easily. It's rated to USDA zone 3 and is among the hardiest sugar maples you can plant, fully at home in Twin Cities winters. Wrap the young trunk the first winter to prevent sunscald and buck rub. How fast does it grow here? At a moderate pace — roughly 1–2 feet per year in good Minnesota soil. Sugar maples are steady, long-lived growers; Green Mountain rewards patience with a stately, durable shade tree. Is it native to Minnesota? Yes. Sugar maple (Acer saccharum) is a true Minnesota native and a cornerstone of our hardwood forests. 'Green Mountain' is a selected cultivar bred for heat and drought tolerance and scorch-resistant foliage. Does it tolerate clay and salt? It handles clay-loam where drainage is decent, but sugar maples dislike compacted, soggy ground and have low salt tolerance — keep Green Mountain out of heavy road-salt zones and improve drainage on tight clay sites. How is it different from Inferno Sugar Maple? Both are excellent native sugar maples. Inferno is selected for the most intense scarlet-red fall color, while Green Mountain is prized for its heat- and scorch-resistant leathery foliage and slightly hardier zone-3 rating, finishing orange-red to red in fall. You May Also Like Inferno Sugar Maple — a sugar maple selected for the most intense, fiery scarlet-red fall color. Red Sunset Red Maple — a faster-growing maple with brilliant orange-red fall color that also handles wetter sites. State Street Miyabe Maple — a tough, salt- and clay-tolerant maple for boulevards and hard urban sites. Northern Red Oak — a stately native shade tree with rich red fall color for large properties. Skyline Honeylocust — a fine-textured shade tree with golden fall color and light, dappled shade. How Many Green Mountain Sugar Maples Do I Need? One specimen anchors a typical lot — give it 30–35 feet of clearance from buildings and other large trees for its 35–45-foot mature crown. For an allee or wide boulevard, plant 35–40 feet on center; a 200-foot drive takes 5–6 trees per side. On acreage, mix it with northern red oak at the same spacing for a classic Minnesota hardwood canopy. Green Mountain Sugar Maple Season-by-Season in Minnesota Spring: Greenish-yellow flowers dangle from bare branches in April — early forage for bees — followed by thick, dark, leathery new foliage. Summer: The leathery leaves stay clean and dark green through July heat that browns ordinary sugar maples; the dense oval-pyramidal crown casts deep shade. Fall: Dependable orange-red to red color, typically peaking early-to-mid October — a more uniform, redder finish than seedling sugar maples. Winter: Strong central leader and furrowed gray bark give a classic hard-maple silhouette that handles snow and ice loads well. At a Glance ✔ Minnesota Native ✔ Pollinator-Friendly ✔ Drought-Tolerant ✔ Four-Season Interest Plant It With Fall Fiesta Sugar Maple — the multi-color sibling; plant both for contrasting sugar-maple fall displays. Red Sunset Red Maple — a faster maple that covers the wetter ground Green Mountain avoids. State Street Miyabe Maple — takes the salty curbside duty so your sugar maple can stay back from the road. Northern Red Oak — a fellow native canopy tree whose deep red layers behind Green Mountain's orange-red. Is Green Mountain Sugar Maple Right for Your Yard? Choose Green Mountain if you want the most heat- and drought-tough native sugar maple — ideal for full sun, deep well-drained soil, and anyone planting a generational shade tree on an exposed site. It's not a fit for compacted or soggy clay, heavy road-salt zones, or impatient gardeners — at 1–2 feet a year, this is a long-game tree. Show more