{"product_id":"northern-sentinel-honeylocust","title":"Northern Sentinel Honeylocust","description":"\u003ch1\u003eA Narrow, Extra-Hardy Honeylocust for Cold Minnesota Boulevards\u003c\/h1\u003e\n\u003cp\u003eNorthern Sentinel Honeylocust (\u003cem\u003eGleditsia triacanthos\u003c\/em\u003e var. \u003cem\u003einermis\u003c\/em\u003e 'Northern Sentinel') is purpose-built for our climate — a narrow, tightly upright honeylocust bred specifically for cold-climate boulevard planting. It pairs the exceptional zone 3 hardiness of the Northern Acclaim line with a slim, columnar habit just 15 to 20 feet wide, so it slips into tight planting strips and narrow yards where a spreading shade tree won't fit. You get the honeylocust's signature fine ferny foliage, lawn-friendly dappled shade, and golden fall color, all on a thornless, low-litter tree. Whether you're lining a boulevard in St. Paul, screening a narrow lot in Plymouth, or planting in the coldest outer-ring suburbs, Northern Sentinel is tough where it counts.\u003c\/p\u003e\n\u003ch2\u003eNorthern Sentinel Honeylocust Plant Details\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAttribute\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eDetail\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eScientific Name\u003c\/td\u003e\n\u003ctd\u003e\n\u003cem\u003eGleditsia triacanthos\u003c\/em\u003e var. \u003cem\u003einermis\u003c\/em\u003e 'Northern Sentinel'\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommon Names\u003c\/td\u003e\n\u003ctd\u003eNorthern Sentinel Honeylocust, Columnar Honeylocust\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMature Height\u003c\/td\u003e\n\u003ctd\u003e30–40 feet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMature Width\u003c\/td\u003e\n\u003ctd\u003e15–20 feet — narrow, tightly upright\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrowth Rate\u003c\/td\u003e\n\u003ctd\u003eModerate to fast\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSun\u003c\/td\u003e\n\u003ctd\u003eFull sun (6+ hours) for best form\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater\u003c\/td\u003e\n\u003ctd\u003eModerate. Drought-tolerant once established; appreciates consistent moisture while young.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUSDA Zones\u003c\/td\u003e\n\u003ctd\u003e3–8 (Twin Cities is zone 4b–5a) — bred for extra cold hardiness\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSoil\u003c\/td\u003e\n\u003ctd\u003eHighly adaptable. Tolerates Minnesota clay-loam, compacted urban soil, drought, and road salt.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFoliage\u003c\/td\u003e\n\u003ctd\u003eDeciduous — fine, ferny green compound leaves, turning golden yellow in fall\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThorns \u0026amp; Pods\u003c\/td\u003e\n\u003ctd\u003eThornless and low-litter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShade\u003c\/td\u003e\n\u003ctd\u003eLight, dappled — lawns and perennials grow well beneath it\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWinter Hardiness\u003c\/td\u003e\n\u003ctd\u003eReliable to -40°F once established\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDeer Resistance\u003c\/td\u003e\n\u003ctd\u003eGood — generally not a preferred browse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eNorthern Sentinel Honeylocust Uses in Minnesota Landscapes\u003c\/h2\u003e\n\u003ch3\u003eCold-Hardy Narrow Boulevard Tree\u003c\/h3\u003e\n\u003cp\u003eBred for both narrow form and zone 3 hardiness, Northern Sentinel is ideal for boulevards and planting strips in the coldest parts of the metro and the outer-ring suburbs, tolerating the salt, compaction, and bitter winters that test other street trees.\u003c\/p\u003e\n\u003ch3\u003eVertical Shade for Tight Lots\u003c\/h3\u003e\n\u003cp\u003eAt 30–40 feet tall but just 15–20 feet wide, it provides vertical shade and structure on narrow lots and along property lines in close-set suburbs like Richfield or St. Louis Park without spreading into the neighbor's yard.\u003c\/p\u003e\n\u003ch3\u003eClean, Lawn-Friendly Tree\u003c\/h3\u003e\n\u003cp\u003eThornless and low-litter, with fine dappled shade, it's a tidy, easy-care choice that lets grass and perennials thrive right up to the trunk — ideal for a manicured yard or boulevard strip.\u003c\/p\u003e\n\u003ch2\u003eBest Time to Plant Northern Sentinel Honeylocust in Minnesota\u003c\/h2\u003e\n\u003cp\u003eHoneylocust is deciduous, so you have two good planting windows in the Twin Cities:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpring (late April–May)\u003c\/strong\u003e, once the ground has thawed, is excellent — the tree gets the full growing season to establish before its first winter.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFall (September–mid-October)\u003c\/strong\u003e 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.\u003c\/p\u003e\n\u003ch2\u003eHow to Plant Northern Sentinel Honeylocust\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eDig 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.\u003c\/li\u003e\n\u003cli\u003eCheck drainage — if water pools in the hole, break through clay hardpan or mound-plant slightly to keep roots out of standing water.\u003c\/li\u003e\n\u003cli\u003eBackfill with the native soil mixed with 20–30% compost. Don't create a pure-compost \"container\" in clay.\u003c\/li\u003e\n\u003cli\u003eSet the tree so the top of the root ball sits at or just above grade. Space trees 10–15 feet apart for a narrow boulevard row.\u003c\/li\u003e\n\u003cli\u003eBuild a 3–4 inch water basin around the root zone to direct water to the roots; flatten it before winter.\u003c\/li\u003e\n\u003cli\u003eMulch 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.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eWatering Northern Sentinel Honeylocust in Minnesota\u003c\/h2\u003e\n\u003ch3\u003eFirst Year Watering Schedule\u003c\/h3\u003e\n\u003cp\u003eWeeks 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.\u003c\/p\u003e\n\u003ch3\u003eAfter Year One\u003c\/h3\u003e\n\u003cp\u003eEstablished Northern Sentinel 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.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill Northern Sentinel Honeylocust survive a Minnesota winter?\u003c\/strong\u003e Yes — it's bred for cold hardiness and reliable to about -40°F, making it a great pick for the coldest parts of the metro.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow narrow does it stay?\u003c\/strong\u003e Just 15–20 feet wide at 30–40 feet tall — a slim, tightly upright form ideal for boulevards and tight spaces.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it thorny or messy?\u003c\/strong\u003e No — it's a thornless, low-litter selection, so there are no hazardous thorns and minimal cleanup.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan grass grow under it?\u003c\/strong\u003e Yes — its fine, dappled shade is lawn-friendly, letting grass and perennials thrive right up to the trunk.\u003c\/p\u003e\n\u003ch2\u003eYou May Also Like\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStreet Keeper Honeylocust\u003c\/strong\u003e — another narrow columnar honeylocust for tight spaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNorthern Acclaim Honeylocust\u003c\/strong\u003e — an extra-hardy broad honeylocust bred for cold climates.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSkyline Honeylocust\u003c\/strong\u003e — the classic uniform pyramidal green honeylocust.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrairie Sentinel Hackberry\u003c\/strong\u003e — a narrow columnar native shade tree for tight spaces.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- tt-enriched --\u003e\n\u003ch2\u003eHow Many Northern Sentinel Honeylocust Do I Need?\u003c\/h2\u003e\n\u003cp\u003eFor a boulevard or property-line row, space trees 10–15 feet apart on center — the narrow 15–20 foot crowns will just touch at maturity for a continuous canopy line. As a single specimen, allow at least 10 feet from driveways, walks, and structures.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRow Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eTrees at 12-ft Spacing\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e25 feet\u003c\/td\u003e\n\u003ctd\u003e2–3 trees\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e50 feet\u003c\/td\u003e\n\u003ctd\u003e4–5 trees\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e100 feet\u003c\/td\u003e\n\u003ctd\u003e8–9 trees\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e150 feet\u003c\/td\u003e\n\u003ctd\u003e12–13 trees\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eNorthern Sentinel Honeylocust Season-by-Season in Minnesota\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpring:\u003c\/strong\u003e Leafs out on the later side — a honeylocust trait that protects new growth from late frosts — then quickly fills in with fine, ferny, bright green compound foliage. Small greenish flowers appear in late spring and quietly feed early bees.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSummer:\u003c\/strong\u003e A full, narrow column of lacy foliage casting light, dappled shade — grass stays green beneath it even in July. Shrugs off heat, drought, and compacted boulevard soil once established.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFall:\u003c\/strong\u003e Foliage turns a clear golden yellow, then the tiny leaflets drop and practically disappear into the lawn — almost no raking required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWinter:\u003c\/strong\u003e A clean, upright silhouette that stands up to snow load, road salt spray, and temperatures to -40°F without dieback.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAt a Glance\u003c\/h2\u003e\n\u003cp\u003e✔ Pollinator-Friendly   ✔ Deer-Resistant   ✔ Salt-Tolerant   ✔ Drought-Tolerant\u003c\/p\u003e\n\u003ch2\u003ePlant It With\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/street-keeper-honeylocust\"\u003eStreet Keeper Honeylocust\u003c\/a\u003e — the slimmest honeylocust of all; alternate the two for a varied narrow streetscape.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/northern-acclaim-honeylocust\"\u003eNorthern Acclaim Honeylocust\u003c\/a\u003e — same zone 3 toughness in a broader, spreading form for open lawn areas.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/skyline-honeylocust\"\u003eSkyline Honeylocust\u003c\/a\u003e — the classic pyramidal honeylocust where you have more width to work with.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/prairie-sentinel-hackberry\"\u003ePrairie Sentinel Hackberry\u003c\/a\u003e — another tough columnar shade tree to mix into a boulevard row for species diversity.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIs Northern Sentinel Honeylocust Right for Your Yard?\u003c\/h3\u003e\n\u003cp\u003eChoose it if you need a cold-proof vertical shade tree for a narrow boulevard strip, tight side yard, or property line in full sun — it handles clay, compaction, salt, and deer pressure better than almost any street tree. It's not a fit if you want deep, dense shade or a broad picnic-tree canopy; its dappled shade is light by design, and wider yards may be better served by Shademaster or Skyline.\u003c\/p\u003e","brand":"Three Timbers Minnesota","offers":[{"title":"2\"BB","offer_id":54260810875185,"sku":"GT-T1976.2","price":439.99,"currency_code":"USD","in_stock":true},{"title":"2.5\"BB","offer_id":54260810907953,"sku":"GT-T1976.3","price":493.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/0694\/0465\/files\/northern-sentinel-honeylocust.jpg?v=1779426681","url":"https:\/\/threetimbersmn.com\/products\/northern-sentinel-honeylocust","provider":"Three Timbers Minnesota","version":"1.0","type":"link"}