Add crisp, year-round structure to tight spaces with Thuja occidentalis 'Sting™' (arborvitae 'Sting™'). This exceptionally narrow, upright evergreen forms a strong vertical accent without taking up much ground, making it ideal where you want height but have limited width. At maturity it reaches about 15-20 feet tall while staying roughly 12-18 inches wide, holding rich green foliage through the seasons.

Plant in USDA hardiness zones 3-7 in full sun to partial shade for best density and color. Choose moist, well-drained soil, and water deeply during establishment so roots grow down into the surrounding ground. Once established, keep the root zone evenly moist during extended dry spells, especially in hot or windy sites where evergreens can dry out quickly.

For best results, give the plant room for air flow and avoid burying the trunk flare. A 2-3 inch layer of mulch helps moderate soil moisture and temperature; keep mulch a few inches back from the stems to reduce the chance of rot.

Pruning is rarely needed. If you want an even sharper outline, lightly shape in late winter to early spring before new growth begins, and remove any damaged or crossing branches. In areas with heavy snow, gently brush off accumulation to help prevent bending or breakage.

Use this narrow conifer to frame doorways, anchor foundation plantings, punctuate mixed borders, or repeat in a line for a tall, space-saving screen. Its slim profile delivers a bold architectural look year-round with minimal maintenance.

Specifications

• Cold hardiness zone: 3-7 (-40 degrees F) - Contact your local extension to confirm hardiness if you are in a fringe zone (we cannot guarantee hardiness in fringe zones)
• Light: Full sun   Part sun
• Growth rate: Slow
• Mature height: 180-240"
• Spread: 12-18"
• Evergreen: Yes

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