Round Arborvitae Shrub: Evergreen Privacy With Minimal Thorns

A round arborvitae shrub transforms any yard into a lush, year-round privacy screen with effortless elegance. 🌿 These dense, globe-shaped evergreens create natural borders that feel soft to the touch and stay vibrant even in winter—no messy thorns or sharp edges to worry about.

I’ve used them to soften fences, frame entryways, and even create intimate seating nooks, and they never fail to impress with their quiet, understated beauty.

Their rounded shape makes them perfect for modern or cottage gardens alike. Plant them 3-5 feet apart for a tight hedge or 6-8 feet apart for a more open, natural look.

Pair them with flowering perennials like hostas or ferns for contrast, or let their rich green stand alone as a statement piece. Unlike other evergreens, they tolerate both sun and partial shade, so you can tuck them into almost any spot without stress.

What you’ll love most is how low-maintenance they are—just a seasonal trim to keep their shape, and they’ll reward you with four-season interest without demanding constant attention. The texture of their needles adds depth to any landscape, whether you’re going for a sleek, structured look or a wild, natural vibe.

They even help reduce noise from busy streets, making them a practical choice too.

Try them as a focal point in a modern garden, a soft border in a cottage layout, or even as a living room divider in larger spaces. Their versatility is one of their best features—once you plant one, you’ll wonder why you didn’t add more sooner.

Ready to see how they can work in your space?

What you need

Step-by-Step guide to planting a round arborvitae shrub

Here’s how to establish a lush, rounded evergreen hedge with minimal fuss—perfect for privacy without the thorns.

Arborvitae thrives in full sun to partial shade but needs at least 6 hours of sunlight daily for best growth. Scan your yard for a location with well-draining soil—avoid low spots where water pools after rain. I like to test drainage by digging a 12-inch hole and filling it with water; if it drains in under an hour, the spot’s ideal.

For a rounded shape, space 4 plants in a square pattern (about 3-4 feet apart), leaving 10-12 feet between rows if creating a hedge. This spacing lets branches fill in naturally over 2-3 years. Mark the spots with stakes to avoid misplanting—trust me, digging up a newly planted shrub is a headache.

Dig a hole twice as wide as the root ball but no deeper—arborvitae roots spread outward, not downward. Loosen the soil at the bottom with a shovel or your hands to encourage root expansion. If your soil is heavy clay, mix in 2 inches of compost from the ingredients list into the hole’s base to improve drainage.

Gently remove the arborvitae from its container and loosen any circling roots with your fingers. This prevents girdling as the plant matures. Set the shrub in the hole so the top of the root ball sits level with the surrounding soil—burying too deep suffocates the plant, while planting too high stresses it. Tap the soil lightly to settle it around the roots.

Water deeply until moisture seeps 6 inches down into the soil—you’ll know it’s enough when the water stops bubbling at the surface. This initial soak helps roots establish quickly. After watering, spread 3 inches of mulch (like pine straw or shredded bark) in a 3-foot diameter circle around the base, keeping it 6 inches away from the trunk to prevent rot.

Mulch locks in moisture and regulates soil temperature, which is critical in the first year as roots grow. Avoid piling mulch against the trunk—this traps moisture and invites pests. Water once a week (or daily in extreme heat) until the plant shows new growth in 4-6 weeks, then taper to every 10-14 days once established.

Wait 6-8 weeks before pruning to let the arborvitae recover from transplant shock. Use clean, sharp shears to trim any brown or damaged branches first—this prevents disease from spreading. For a rounded shape, focus on light shaping in early spring: cut back overly long branches by ⅓ to encourage bushier growth.

Here’s the thing—arborvitae grows slowly, so don’t over-prune. A little shaping now means less work later. After pruning, water deeply to help the plant recover. In subsequent years, prune just once a year in late winter or early spring before new growth starts. Avoid heavy pruning in fall—it stresses the plant before winter dormancy.

Check the soil monthly for moisture—arborvitae prefers consistently moist but not soggy soil. Yellowing needles often signal overwatering or poor drainage, while brown tips mean underwatering or dry air. If you notice browning, reduce watering slightly and increase humidity with a light misting during dry spells.

Fertilize lightly in early spring with a balanced, slow-release fertilizer (like 10-10-10) if growth stalls. Too much fertilizer burns roots, so follow the package rates—half is often enough. By year 3, your arborvitae should form a dense, rounded hedge with minimal effort. Just keep an eye out for spider mites (common in dry conditions) and treat with neem oil if needed.

Tips & tricks for planting a perfect round arborvitae shrub

These simple tricks will help your evergreen hedge grow into a lush, rounded privacy screen without the fuss.

Sunlight and Soil Test: Arborvitae needs that 6 hours of sunlight daily—but not every yard spot gets equal sun. I like to use a solar pathfinder app to map sunlight patterns before planting. For soil, the 12-inch hole drainage test is foolproof: if water drains in under an hour, you're golden. If not, amend with compost before planting to prevent root rot.

Root Ball Prep: When loosening circling roots in Step 2, don't just pull—they'll snap. Instead, gently tease them apart with your fingers, working from the outside in. This prevents girdling (where roots strangle the trunk) that can kill your shrub in years. I always do this over a bucket to catch loose soil and roots—no mess, no surprises.

Watering Wisdom: That 6-inch deep watering in Step 3 isn't just about the roots—it's about training them. Water slowly until it seeps through, then check with your finger. If the top inch is dry after 30 minutes, water again. Over the first 4-6 weeks, I set a timer to remind myself to water consistently—arborvitae roots need this patience to establish.

Pruning Precision: The ⅓ rule for shaping in Step 4 is your friend, but timing matters too. Early spring is ideal because new growth is about to start—you're shaping what's coming, not cutting into last year's energy stores. I mark my calendar for late February to avoid that fall pruning trap, which stresses plants before winter.

Frequently asked questions

How fast does a round arborvitae shrub grow?

A round arborvitae typically grows 1 to 2 feet per year under ideal conditions. With proper care—like regular watering and well-draining soil—you can expect faster growth, especially in the first few years. For quick privacy, opt for larger nursery-grown plants (3–5 feet tall) to skip the waiting game!

When is the best time to plant a round arborvitae?

The best times to plant are early spring or early fall when temperatures are mild. Avoid extreme heat or frost, as these can stress young shrubs. If you must plant in summer, water deeply daily for the first 2 weeks to help roots establish. Pro tip: Mulch around the base to retain moisture!

Are round arborvitae shrubs deer-resistant?

While arborvitae are not deer-proof, they’re less appealing than other evergreens like spruce. Deer may nibble if food is scarce, but mature shrubs (over 5 feet tall) are usually safe. For extra protection, wrap young plants in deer repellent fabric or use natural deterrents like garlic spray.

Why are my arborvitae leaves turning brown?

Brown leaves often signal overwatering, underwatering, or pests. Check the soil—it should be moist but not soggy. Spider mites or bagworms can also cause browning. Solution: Prune affected branches, adjust watering, and spray with neem oil if pests are suspected.

What’s a good alternative if I don’t want a round arborvitae?

If you love the look but want variety, consider:

• Emerald Green Arborvitae – Narrow, columnar shape for vertical privacy.
• Thuja occidentalis ‘Sunkist’ – Golden foliage for a pop of color.
• Boxwood Shrubs – Dense, low-maintenance, and great for hedges.
• Leyland Cypress – Fast-growing but needs more space.

Wrapping up and next steps

Adding a round arborvitae shrub to your landscape is a fantastic way to enjoy year-round privacy, texture, and low-maintenance beauty. These evergreens thrive in various climates, offer a soft, lush appearance, and require minimal pruning—making them perfect for hedges, borders, or standalone focal points.

Whether you're a seasoned gardener or just starting, their resilience and adaptability make them a smart, stylish choice for any outdoor space.

Ready to transform your yard? Start by selecting the right variety for your zone, then grab your gloves and get planting—your future green oasis awaits! 🌿