How Fast Do Privacy Trees Actually Grow in Minnesota?

In Twin Cities conditions, American Pillar arborvitae puts on about 1.5 to 2 feet a year, Techny about 1 foot, Emerald Green and Holmstrup types 8 to 12 inches, columnar junipers roughly 6 to 12 inches, and Black Hills spruce 6 to 12 inches. Starting from #5 container stock, expect a solid screen in 5 to 7 years with American Pillar, 5 to 7 with Techny, and 8 to 12 with columnar juniper.

Those numbers are lower than what you will read almost anywhere else, and that is deliberate. The "3 feet per year" figure attached to fast-growing arborvitae comes from nursery marketing and from trial plots in longer growing seasons than ours. Minnesota gives a plant roughly five months of active growth, heavy clay soil that roots move through slowly, and a first two years spent recovering from transplant rather than growing. We plant these screens across the metro and then go back and look at them, and these are the numbers we actually see.

Below are the real growth rates by plant, the difference between growing tall and actually screening, a years-to-solid-screen table at real spacings, and an honest accounting of why junipers are slower — and why we still recommend them on a lot of properties anyway.

Why "3 feet per year" is wrong here

You will see fast-growing arborvitae advertised with a three-foot annual growth figure. Those numbers come out of longer growing seasons and better soils than ours, and two things break them in Minnesota.

The first is season length. Our active growing season in the metro runs roughly from early May to mid-September — call it five months. A tree in zone 7 gets seven or eight. Same plant, same genetics, forty percent less time to put on growth every single year.

The second is establishment. Transplant research puts trees in cold climates — hardiness zones 2 through 6, which is all of Minnesota — at roughly a year or more of establishment per inch of trunk caliper, versus about three months per inch in the Deep South. During establishment a plant is building roots, not shoots. Years one and two of a new hedge produce very little visible height no matter what the tag says.

Add heavy clay, and the honest result is that a mature-catalog growth rate should be cut by roughly a third to a half for a Twin Cities property. We would rather quote a number you will actually hit than sell you a timeline you will be disappointed by in year four.

The real growth rates

These are our field numbers for established plants in Twin Cities clay, after the first two establishment years, with adequate water.

Two things to notice. First, the spread between the fastest and slowest plant on this list is about three to one — American Pillar is not marginally faster than a juniper, it is roughly double to triple. Second, the plants with the tightest spacing requirements are not the fast ones. Sky Rocket needs 3 feet on center and grows slowly, which is the trade-off you are accepting when you choose it. Star Power is the gold-foliage option in the same class — a full 15- to 18-foot screening juniper, not a bed-level shrub — and it grows at the same 6 to 12 inches a year, though at 7 to 9 feet wide it needs a deep bed rather than a narrow property-line strip.

Height is not the same as screening

This is where most growth-rate content goes wrong. A plant's growth rate describes vertical extension. A privacy screen is finished when the gaps close — when you can no longer see through the run at eye level.

Those are different milestones, usually two to four years apart. A row of arborvitae planted 4 feet apart can be 9 feet tall and still have a foot of daylight between every plant, because width fills in more slowly than height does on almost every columnar evergreen. We define three stages, and we quote all three to customers:

• Visual break. The row reads as a planted line and softens the view. Usually year 1 or 2, depending on starting size.
• Screening height. Tall enough to block what you are trying to block — usually 6 to 8 feet for a seated patio or a neighbor's windows. This is what growth rate predicts.
• Solid screen. Gaps closed, continuous green wall at the base. Always the longest wait, and the one people actually mean when they say "when will it be done."

One consequence worth planning around: at the base of a hedge, gaps close last and stay open longest, because lower branches get the least light. If your privacy problem is at ground level — a neighbor's patio, a dog run, headlights — plan for the solid-screen timeline, not the height timeline.

Years to a solid screen, at real spacings

The table below assumes #5 container stock, roughly 2.5 to 3 feet tall at planting, in average Twin Cities clay with the standing watering regimen: 5 gallons per plant, once a week, through two full summers. Skip the water and every number gets worse.

Techny reaches screening height more slowly than American Pillar but catches up on the solid-screen line, because Techny is a broad plant — 6 to 8 feet wide at maturity — so it closes a 4-foot gap efficiently once it gets going. American Pillar is narrow, 3 to 4 feet, which is why it goes in at 3 feet on center. Faster growth and tighter spacing arrive at roughly the same finish date by different routes.

Starting size moves the date more than growth rate does

If you want a screen sooner, the highest-leverage decision is not which plant grows fastest. It is how big a plant you start with. A 6-foot balled-and-burlapped American Pillar is already four years ahead of a #3, on day one.

Here is that trade-off with real numbers, for a 50-foot run of American Pillar at 3 feet on center — 17 plants — installed by our crew, using our 2026 Twin Cities catalog prices.

The honest read on that table: jumping from #3 to #5 costs about $250 and buys roughly a year — that is the best value on the list. Jumping to 6-foot B&B costs about seven thousand dollars more than #5 and buys three or four years. Whether that is worth it depends entirely on how much the next three years of privacy is worth to you, and we will quote either one without editorializing. Note also that large B&B stock establishes more slowly, so it does not grow at its full rate immediately — part of what you buy is head start, not speed.

The full cost breakdown, including other plants and sizes, is in How Much Does a Privacy Hedge Cost in the Twin Cities?

Sleep, creep, leap: what the first three years look like

Growth is not linear, and knowing the shape of the curve prevents a lot of unnecessary worry.

• Year one — sleep. Almost no visible height. The plant is regenerating the roots it lost at the nursery. Some interior needle drop is normal. This is the year people call us convinced the plants are dying.
• Year two — creep. Modest growth, maybe half the published rate. Roots are reaching into surrounding soil. Still the year that decides everything, and still the year that needs 5 gallons per plant per week.
• Year three onward — leap. Full rate. This is when the numbers in the table above start applying, and when the hedge visibly changes between spring and fall.

This is also why the two-summer watering rule is not padding. Underwatering during sleep and creep does not usually kill the plant outright; it stunts it, and the screen you were told to expect in year six shows up in year nine. Most disappointing hedges in the metro are not slow plants — they are thirsty ones.

Junipers are slower. Here is why we still recommend them.

We are not going to soften this: columnar junipers fill in more slowly than arborvitae, and on the solid-screen line the gap is real — roughly 8 to 12 years versus 5 to 7. They also need tighter spacing, which means more plants per linear foot and a higher plant count on the estimate.

We still put junipers on a lot of Twin Cities properties, for one overriding reason: arborvitae is the metro's most heavily browsed evergreen. Deer treat it as candy, and rabbits strip the lower two to three feet of foliage from the packed snow line — permanently, because arborvitae does not regrow foliage from bare wood. A hedge that reaches solid screening in six years and then loses its bottom three feet in year seven is not a six-year screen. It is a replacement job. Junipers get walked past by both animals, and they handle wind, drought, poor soil and road salt better besides.

So the decision is not "which grows faster." It is:

• Fenced yard, no browse pressure? Plant arborvitae. It fills faster and costs less per plant. That is the honest answer and we sell plenty of it.
• Exposed property line, backing onto woods or a park, visible rabbit runs, or deer pressure — heaviest west and southwest of I-494? Plant juniper and accept the slower timeline. The screen you get is the screen you keep.

The trade-offs run both directions, and you should hear all of them: junipers get juniper tip blight and are an alternate host for cedar-apple rust, which matters if you have crabapples. They hate wet feet, so a low, poorly drained corner is an arborvitae spot, not a juniper spot. And Sky Rocket in particular tends to splay open under heavy Minnesota snow load — on a site that drifts, Taylor holds a tighter form and is the safer pick. The full comparison is in Juniper Privacy Screens for Minnesota and Arborvitae vs. Spruce vs. Juniper.

What actually speeds a screen up — and what doesn't

Works:

• Water, above everything. 5 gallons per plant per week for two full summers. Nothing else on this list comes close.
• Starting bigger. The one thing that buys years outright.
• Full sun. Six-plus hours. A hedge on the north side of a house or under a canopy grows slower and thins at the base permanently.
• Correct planting depth. A buried root flare stunts a plant for its whole life. Set it an inch above grade.
• Mulch, 2 to 3 inches, pulled back from the trunk. Moderates soil temperature and moisture and keeps grass from competing.
• Planting in the right window. Evergreens go in late August through about September 20 in the metro; miss that and you spend year one recovering from winter desiccation instead of growing.

Doesn't:

• Fertilizer. A newly planted evergreen in Minnesota clay is not nitrogen-limited, it is root-limited. Fertilizer pushes top growth the roots cannot support.
• Planting closer than the recommended spacing. It looks better for three years, then the plants compete, thin at the contact points, and the hedge is worse at maturity than a correctly spaced one.
• Shearing a young hedge to "make it bushy." On arborvitae and juniper, cutting into old wood leaves a hole that never fills. Light tip pruning only, and not until the hedge is near its target height.
• Amending the whole planting hole with compost. Roots stay in the enriched pocket instead of moving out into your soil.

The slow option that outlives everything

If your timeline is long and your lot is big, Black Hills Spruce is worth a look precisely because it is slow. At 6 to 12 inches a year and 8 to 10 feet on center, a spruce windbreak is a 12- to 15-year project. What you get is a permanent structure: a native, deer-resistant, zone-3-hardy tree that reaches 20 to 40 feet and never needs replacing, on a property where an arborvitae hedge might be on its second planting by then.

Spruce also screens differently. Instead of a narrow green wall on the property line, you get depth and mass, which is more effective against wind and road noise than any columnar hedge. On a half-acre lot in Lakeville or Stillwater with room to give it, that is often the better long-term answer. On a 40-foot townhome lot, it is not — a mature Black Hills spruce is 15 to 25 feet wide and will swallow the yard.

Frequently Asked Questions

How fast does arborvitae grow in Minnesota? It depends on the cultivar. American Pillar is the fastest we sell at about 1.5 to 2 feet per year once established. Techny runs about a foot a year, and Emerald Green and Holmstrup types 8 to 12 inches. The commonly advertised 3 feet per year does not happen in the Twin Cities — our growing season is roughly five months and heavy clay slows root expansion.

How long until my privacy hedge blocks the neighbors? From #5 container stock, expect roughly 2 to 3 years to reach 6 feet with American Pillar at 3 feet on center, 3 to 4 years with Techny at 4 feet, and 4 to 6 years with columnar juniper. A truly solid, gap-free screen takes longer: 5 to 7 years for the arborvitae and 8 to 12 for the junipers.

What is the fastest-growing privacy tree for Minnesota? American Pillar arborvitae, at about 1.5 to 2 feet per year in Twin Cities conditions. It is narrow — 3 to 4 feet wide at maturity — so it goes in at 3 feet on center. The caveat is that arborvitae is also the metro's most heavily browsed evergreen, so on an unfenced site that speed comes with deer and rabbit risk.

Do junipers really grow slower than arborvitae? Yes, and we say so plainly. Columnar junipers like Taylor, Sky Rocket and Star Power put on roughly 6 to 12 inches a year here and take about 8 to 12 years to close into a solid screen, versus 5 to 7 for arborvitae. We recommend them anyway on browsed sites, because deer and rabbits leave them alone and a slower screen you keep beats a faster one you replace.

How tall does Star Power Juniper get? 15 to 18 feet tall and 7 to 9 feet wide. It is a full screening juniper, not a bed-level shrub, and it grows at the same 6 to 12 inches a year as Taylor and Sky Rocket. Plant it 5 feet on center for a continuous screen, and give it a deep bed — it is much broader than the narrow columns. Its gold-tipped new growth is the reason to choose it over the green and blue-gray options.

Does buying bigger plants get me privacy faster? Yes, and it is the single most effective thing you can buy. Moving from #3 to #5 stock costs roughly $250 on a 50-foot run and buys about a year. Moving to 6-foot balled-and-burlapped costs several thousand more and buys three to four years. Large B&B also establishes more slowly, so part of what you are buying is head start rather than speed.

Why did my new arborvitae not grow at all the first year? That is normal and it has a name — sleep, creep, leap. Year one goes into regenerating roots lost at the nursery, year two produces modest growth, and full growth rate starts in year three. What matters during those first two years is water: 5 gallons per plant per week. Skipping it does not usually kill the plant, it permanently stunts it.

Will planting closer together give me a screen sooner? Briefly, then it backfires. Overcrowded evergreens compete for light and water, thin out where they touch, and produce a hedge that is worse at maturity than a correctly spaced one. Use 3 feet on center for American Pillar, Sky Rocket and Taylor, 5 for Star Power, 4 to 5 for Techny, and buy bigger stock instead if you want speed.

Does fertilizer make a privacy hedge grow faster? Not meaningfully, and it can hurt. A newly planted evergreen in Twin Cities clay is limited by roots, not nutrients, and fertilizer pushes top growth that the root system cannot support. Water, correct planting depth, full sun and proper mulch do far more for growth rate than any fertilizer program.

How fast does Black Hills spruce grow? Slowly — roughly 6 to 12 inches a year. Planted 8 to 10 feet on center it takes 12 to 15 years to form a real screen. In exchange you get a native, deer-resistant, zone-3-hardy tree that reaches 20 to 40 feet, provides depth and wind protection a columnar hedge cannot, and never needs replacing.

Can I prune a privacy hedge to make it fill in faster? Not on arborvitae or juniper. Neither regenerates foliage from bare old wood, so cutting back into the interior leaves a permanent hole. Light tip pruning once the hedge nears its target height encourages density, but a young hedge fills in fastest when you leave it alone and water it.

Ready to start the clock on your screen?

The best year to plant a privacy screen was six years ago; the second best is this fall, before the evergreen window closes around September 20. Three Timbers Minnesota grows, delivers and installs across the Twin Cities — Edina, Plymouth, Chanhassen, Woodbury, Maple Grove — with no minimum job on plant delivery and planting. Start with American Pillar Arborvitae for speed, Taylor Juniper for a browsed site, or Black Hills Spruce for a permanent windbreak, and browse the full privacy hedges and evergreens collections. Call or text 612-214-1955 and we will size the run and give you a real timeline.