Green Giant Arborvitae (3'/year to 50' tall, 10' spread): plant 10 feet apart for touching at maturity. Stagger two rows 8 feet apart for faster density. Single row 10' spacing = solid screen in 5-7 years.
Alternatives for faster density: 'Emerald Green' Arborvitae (12-15', 3-4' spread, plant 3' apart), Leyland Cypress (faster but disease-prone), or mixed native screen (Hollies, Viburnums, Pines) for resilience.
Zone 4 hardy. Sources: Hall's Nursery, Iowa State Extension, TyTy Nursery, Evergreen Plant Nursery online. Buy locally for climate adaptation.
Deer resistant once established. Watch for bagworms. Water deeply weekly first year.
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