Illustration
Black Hills Spruce
Picea glauca 'Densata'
Black Hills Spruce is grown for its foliage rather than flowers, giving the garden structure and color all season long.
Months here are Northern Hemisphere months; in the Southern Hemisphere, shift them by six months.
Growing Black Hills Spruce
Plant it in full sun. It prefers moderate water. It is hardy in USDA zones 3–6. Expect it to reach about 35 ft tall and 20 ft wide at maturity, in roughly 20 years (a house reading).
No toxicity note is on file for Black Hills Spruce. That is not a clearance: check its safety for people and pets before planting.
What this means
Listed on October 3, 2026, from two published pages: Plant Addicts and NC State Extension. Its mature size, hardiness zones, sun, bloom time and trait tags were read off those pages and recorded beside them. It has not yet been checked against the wider botanical literature, so treat the numbers as a starting point. Years to mature size is a house convention, taken from the plants of the same kind already in the library. The source-by-source check works through the whole library in the open, and a checked plant says so in this row.
Plant Addicts (opens in a new tab) · NC State Extension (opens in a new tab)
When to plant Black Hills Spruce
Plant Black Hills Spruce in spring once the soil is workable, or by very early fall at the latest: an evergreen needs its roots down well before the ground freezes. In zone 4, the middle of its hardy zones 3 to 6, that is April to June, or July on the fall side.
Month-by-month timing for your zone is on the planting calendar; if you garden near zone 4, the middle of this plant's hardy range, start with zone 4 in April. Derived from the plant's category, zones and bloom months plus typical zone frost dates, not checked separately.
How big does Black Hills Spruce get?
35 fttall5 ft 7 inan adult20 ftwideSee Black Hills Spruce in a garden plan: the planner shows it in 3D beside everything else you add, growing toward this size over the years.
How far apart to plant Black Hills Spruce
Derived from the mature spread above by a fixed rule, not checked separately: spacing is the spread, center to center.
Give Black Hills Spruce about 20 ft of clear ground in every direction, measured from its center. It is one plant with room around it, not a row, and a raised bed is too small for it.
Add Black Hills Spruce to a garden plan and the planner draws it at its full width, so you see the spacing before you buy.
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Drop this plant onto a 3D plan, see how it fills in, and watch your whole garden bloom across the year.