Emerald Green 'Smaragd' Arborvitae

Watering

Once established, water deeply about once a week, especially during dry spells. Aim for 1/2 to 1 inch of water per week.

Sunlight

These trees prefer full sun but can tolerate some afternoon shade, especially in hotter climates.

Soil Maintenance

Apply a 2-3 inch layer of mulch around the base to retain moisture, suppress weeds, and regulate soil temperature. Replenish the mulch layer as needed.

Pruning

Light pruning can be done in early spring to encourage denser growth. However, extensive pruning is generally not necessary.

Fertilizing

Feed your trees with a balanced fertilizer in early spring to promote healthy growth. Established trees may not require regular fertilization, especially if your soil is rich.

Winter Care

Heavy snow can weigh down branches. Gently brush off snow after winter storms to prevent damage.

Pest and Disease Control

Emerald Green Arborvitae are generally pest and disease resistant. However, keep an eye out for common problems and treat accordingly.

Spacing and Air Circulation

For healthy growth, avoid overcrowding your trees. Ensure proper spacing (3 feet for hedges) to allow for good air circulation, which helps prevent disease.

Upon Arrival

When your new arborvitae arrives, water it deeply right away. Soak the root ball thoroughly until water runs freely from the drainage holes.

During the First Year

Newly planted trees need consistent moisture to establish a strong root system. Water deeply twice a week for the first few months, then gradually reduce to once a week for the rest of the year.

After the First Year

Established trees are more drought tolerant, but watering remains important. Aim for deep watering about once a week, especially during hot and dry periods. Aim for 1/2 to 1 inch of water per week.

Extra Tips

Monitor the soil moisture regularly, especially during hot weather. Feel the soil a few inches down – it should be moist but not soggy. Water deeply at the base of the tree, allowing water to penetrate the root zone. Avoid shallow watering, which encourages surface roots.

Upon Arrival

New trees don’t need fertilizer yet. Focus on watering to establish the root system.

During the First Year

You can lightly fertilize in early spring with a balanced slow-release fertilizer formulated for evergreens. Follow the application instructions on the product label carefully.

After the First Year

Established trees may not require regular fertilization, especially if your soil is rich in nutrients. However, if new growth seems slow, a light application of fertilizer in early spring can be beneficial.

Extra Tips

A soil test can help determine if your soil needs fertilizer and what nutrients might be lacking. Over fertilizing can damage your trees, so always less is more. Water deeply after fertilizing to help the nutrients reach the roots.

Timing

Prune in early spring when new growth has just begun. Avoid pruning in late summer or fall as it can encourage new growth vulnerable to winter damage.

Tools Needed

Sharp hand pruners or hedge shears are suitable for most pruning tasks. Loppers may be needed for thicker branches.

Initial Inspection

Before pruning, take a step back and assess the overall shape of your tree. Consider the desired outcome – are you maintaining a hedge, shaping individual trees, or creating a specific form?

Removing Dead or Diseased Wood

Start by removing any dead, diseased, or broken branches. Cut these back to a healthy section of the stem.

Shaping the Tree

For a denser hedge, lightly shear the sides and top of the tree. Aim to remove no more than 1/3 of the new growth. For individual trees, you can gently prune to remove wayward branches and create a more rounded or pointed shape.

Maintaining Air Circulation

Avoid over-shearing, especially near the base of the tree. This can block airflow and increase the risk of disease.

Spiral Topiary (Optional)

For the adventurous gardener, a spiral topiary is a unique option. Prune branches progressively shorter as you move up the tree, creating a spiraling effect. Use online resources or consult a professional for detailed instructions.

Post-Pruning Care

After pruning, water your trees deeply to help them recover. Apply a thin layer of mulch around the base to retain moisture and promote healthy growth.

How fast do Emerald Green Arborvitae grow?

These are considered fast-growing trees, typically growing around 1 foot per year until established, then slowing to 6-9 inches per year. In ideal conditions, you can expect a mature size of 10-15 feet tall within 10-15 years.

How much sun do Emerald Green Arborvitae need?

They thrive in full sun (at least 6 hours of direct sunlight daily) but can tolerate partial shade as well. Avoid excessive shade, which can lead to sparse foliage growth.

How far apart should I plant Emerald Green Arborvitae for a hedge?

For a dense, privacy hedge, space your trees 3 feet apart when planting. This allows them to grow together and create a solid wall of green.

Do Emerald Green Arborvitae lose their leaves in winter?

No, these are evergreen trees and will maintain their vibrant green foliage throughout the year, even in cold climates.

How do I care for Emerald Green Arborvitae in winter?

These trees are cold-hardy but heavy snow can damage branches. After winter storms, gently brush off snow to prevent breakage.

How often should I water Emerald Green Arborvitae?

Water deeply once a week, especially during the first year and hot, dry periods. Aim for 1/2 to 1 inch of water per week to soak the root zone. Established trees are more drought tolerant but still require watering during dry spells.

Do Emerald Green Arborvitae need fertilizer?

They are generally low feeders, and fertilizing may not be necessary, especially in nutrient-rich soil. However, a light application of balanced fertilizer in early spring can promote healthy growth, especially for young trees.

How do I prune Emerald Green Arborvitae?

Prune lightly in early spring to maintain shape and density. Remove dead or diseased branches, and lightly shear the sides and top for hedges. Avoid over-shearing, especially near the base, to maintain good air circulation.

Are Emerald Green Arborvitae susceptible to pests and diseases?

These trees are generally resistant to pests and diseases. However, keep an eye out for common problems like fungal diseases and treat them accordingly if needed.