Avalanche™ Birch Tree

Betula x 'Avalzam'

Proven Winners®

Pure-White Bark Stands Out Year-Round in Smaller Landscapes
Cold Hardy: Thrives in Zones 4-7
Grows 50 ft Tall, 30-40 ft Wide
Stunning Yellow Fall Foliage
Pollinator-Friendly Tree

$98⁸⁹

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Plant Size

#3 Container Multi-stem

Product variants

Planting & Care

Where to Plant

Sunlight: This birch thrives in full sun, requiring at least 6 hours of direct light daily to maintain its vigorous growth and bright white bark. It can handle partial shade, but you may notice a slightly thinner canopy and less intense yellow fall color.
Soil: It prefers moist, well drained soil that is slightly acidic. If you have heavy clay, plant it in a slight mound to improve drainage; for sandy soil, mix in organic compost to help the roots hold onto moisture.

Watering Requirements

During the first two growing seasons, provide 10 to 15 gallons of water per week to help the root system settle. Once established, this tree is quite adaptable, but it lacks deep drought tolerance and will drop leaves prematurely if the soil stays bone dry for too long. Keeping the root zone cool with a thick layer of mulch helps prevent the stress that attracts wood-boring insects.

Pruning Tips

Prune only during the late summer or fall to avoid "bleeding" sap, which occurs if you cut it in early spring. Focus on removing rubbing branches or low limbs to show off the exfoliating white bark on the trunk. Think of this like a structural tune up; removing dead wood early ensures the tree puts its energy into a healthy, symmetrical canopy.

Fertilizer Needs

Apply a balanced, slow release fertilizer in early spring just as the leaf buds begin to swell. Avoid using high nitrogen fertilizers late in the summer because this encourages tender new growth that won't harden off before the first frost. This late season growth is easily damaged by winter kill, which can invite disease into the main branches.

Delivery and Shipping

Preorder Shipping Schedule

We ship your plants when it's safe to transport them to your zone. Dates are estimated and subject to weather delays.

Zone 3-4	Week of March 30th
Zone 5	Week of March 16th
Zone 6-12	Week of March 2nd

Shipping Rates

Ships in 7-10 business days • Tracking provided • Weather protected

Under $50	$9.99
$50 - $99.99	$14.99
$100 - $149.99	$16.99
$150 - $198.99	$24.99
$199+	FREE

✓ Zone-specific timing • ✓ Professional packaging • ✓ Health guarantee

Understanding Our Container Sizes

At Nature Hills, our plants are sold in industry-standard nursery containers. You will notice we use the word "container" rather than "gallon." Container numbers follow a nursery trade size standard, not liquid volume. The number tells you the plant's size category and general maturity level. A larger container means a more established plant with a stronger root system.

Container Sizes

Quart

Plant age: 6 months to 1 year
Best for: Ground covers, perennials, ornamental grasses
What to expect: Our smallest and most affordable size. Well-suited for planting in multiples across a large area. Allow 1 to 2 seasons for full establishment.

#1 Container

Plant age: 1 to 2 years
Best for: Shrubs, perennials, smaller trees
What to expect: About the size of a large coffee can. A well-developed root system in a manageable size. Good value choice when you have time to let the plant grow into the space over a season or two.

#2 Container

Plant age: 2 to 3 years
Best for: Shrubs and trees where you want faster establishment
What to expect: A noticeable step up from a #1 in both plant size and root development. Good choice when you want visible presence without going to a larger size.

#3 Container

Plant age: 3 to 4 years
Best for: Most plants, most situations — flowering trees, shade trees, evergreen shrubs
What to expect: Our most popular size. Strong, developed root system. Plants in a #3 container make an immediate visual impact from day one. If you want a head start rather than waiting seasons for a plant to fill in, this is typically the right choice.

#5 Container and Larger

Plant age: 4 to 5+ years
Best for: Specimen plants, privacy screens, maximum instant impact
What to expect: Large, mature plants ready to make an immediate statement in your landscape. We also carry #7 and larger sizes for select varieties.

Why "Container" and Not "Gallon"?

Nursery container sizes follow an industry trade standard established for the nursery and horticulture industry. The number is a size designation, not a measurement of liquid volume. Actual soil volume varies by plant type, root mass, and growing medium. Using "container" is the accurate industry term. When you see #1, #2, or #3, think of it as the plant's size tier, not a gallon measurement.

Root Pouch Containers

Some Nature Hills plants arrive in a Root Pouch, a breathable fabric container made from 100% recycled materials. Root Pouches encourage denser root development through air pruning, which discourages root circling and promotes a stronger, more fibrous root ball at the time of planting.

Plants growing in Root Pouch fabric containers, showing the breathable woven fabric construction

There are two types. Knowing which one you have changes how you plant:

Degradable (brown or tan fabric): Plant the entire pouch directly in the ground. The fabric breaks down naturally in the soil over time.
Non-degradable (black or gray fabric): Remove the pouch before planting. Cut the bottom open with scissors, then peel the sides away. The fibrous root ball will hold its shape.

Not sure which type you have? Check the tag on your plant or contact us and we will confirm.

Full Root Pouch planting guide

Choosing the Right Size

Size	Plant Age	Best For
Quart	6 mo to 1 yr	Ground covers, perennials, grasses. Budget-friendly for mass plantings.
#1 Container	1 to 2 yrs	Shrubs, perennials, small trees. Value choice for patient gardeners.
#2 Container	2 to 3 yrs	Shrubs and trees where you want faster establishment.
#3 Container	3 to 4 yrs	Most plants. Immediate visual impact. Our most popular size.
#5 and larger	4+ yrs	Specimen plants, privacy screens, maximum instant impact.

Still not sure which size is right for your project? Our plant specialists are happy to help. Contact us and we will point you in the right direction.

Photo courtesy of Proven Winners - www.provenwinners.com

Avalanche™ Birch Tree – A Striking Landscape Beacon

Transform your landscape with the Avalanche™ Birch Tree (Betula x 'Avalzam')! This is a breathtaking, fast-growing shade tree known for its brilliant pure-white bark, delicate green foliage, and graceful, upright form. Smaller than other White Birch, Avalanche™ is ideal for smaller and modern lots and yards!

From spring through fall, its bright green leaves shimmer in the breeze, creating a soft, dappled shade perfect for garden retreats. As autumn arrives, the foliage transforms into a golden-yellow display, offering an incredible seasonal show! Even in cold New England winters, its signature snowy-white bark steals the spotlight, adding texture and contrast to dormant landscapes.

With its quick growth, cold hardiness, and exceptional resilience, the Avalanche™ Birch is an ideal focal point, shade tree, or natural privacy screen for any outdoor space. This resilient hybrid Birch is specially bred to be more disease-resistant than other varieties, making it a low-maintenance yet high-impact choice for homeowners and landscapers alike!

Why You’ll Love Avalanche™ Birch

If you’re looking for a fast-growing, visually stunning, and adaptable tree, this white-barked beauty checks all the boxes.

Brilliant White Bark – Striking, snowy-white trunks develop early, creating a dramatic focal point year-round.
Graceful, Lush Foliage – Bright green leaves dance in the breeze, casting a soft, cooling shade in summer.
Dazzling Fall Color – Foliage turns golden-yellow in autumn, making it a standout seasonal performer.
Fast-Growing & Hardy – Quickly reaches 50 feet tall, providing instant landscape impact. Its canopy spreads to a graceful 30-40 feet wide.
Disease & Pest Resistant – More resistant to borers and disease than other white Birch varieties.
Cold Hardy & Adaptable – Thrives in USDA Zones 4-7, handling cold winters and varying soil conditions.

Where to Plant Avalanche™ Birch

This majestic, adaptable shade tree is perfect for a variety of landscapes, offering height, texture, and beauty in every season.

Front Yard Showpiece – Creates a stunning, high-impact statement near driveways or entrances.
Backyard Shade Tree – Offers cooling relief in summer with its airy, light-filtering canopy.
Privacy & Screening – Plant in rows for a natural, fast-growing screen with year-round interest.
Lakeside & Streambank Planting – Thrives in moist, well-draining soils, making it ideal for waterside landscapes.
Urban & Suburban Landscapes – Handles city pollution better than many other Birch varieties.
Winter Interest Gardens – Keeps the landscape visually appealing even in the coldest months with its gleaming white bark.
Sensory Gardens: The waving foliage and white noise created by the leaves are perfect to add to Meditation gardens and add motion to the garden!

Birch Tree Care & Maintenance

With basic care and the right planting location, this hardy Birch tree will flourish for decades, providing shade, beauty, and seasonal charm. Read more about caring for Birch Trees in our Garden Blog!

Sunlight: Prefers full sun to partial shade; best in at least 6 hours of direct sunlight per day.
Soil: Grows well in moist, well-drained, slightly acidic to neutral soil; tolerates clay and sandy soils. Handles compacted soil but not constantly soggy conditions.
Watering: Keep soil consistently moist, especially in hot summers; mulch helps retain moisture.
Mulching: A 3-4 inch mulch layer around the base helps protect roots and maintain soil moisture.
Pruning: Minimal pruning is needed—remove dead or weak branches in late winter to maintain shape.
Fertilizing: Apply a balanced, slow-release fertilizer in early spring to support strong growth.

Add Timeless Elegance to Your Landscape with Avalanche™ Birch!

With its striking white bark, graceful foliage, and outstanding resilience, Avalanche™ Birch is the perfect choice for homeowners looking for a fast-growing, beautiful, and easy-to-care-for shade tree. Whether used as a single specimen, planted in groups, or lined along a driveway, this breathtaking Birch variety delivers four-season beauty with minimal effort.

Order yours today and bring year-round brilliance to your outdoor space!

Botanical Name

Betula x 'Avalzam'
Class

Magnoliopsida, Fagales
Species

x
Cultivar

Avalzam
Growing Zones

4-7
Height

50 ft
Width

30-40 ft
Sunlight

Full sun, Partial shade
Growth Rate

Moderate
Flower Color

Green
Leaf Color

Green, Yellow
Fall Color

Yellow
Bloom Period

Early Spring
Does Not Ship To

AK, HI, ID, MT, PR

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Growing Zones 4-7

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Frequently Asked Questions

How fast does the Avalanche™ Birch Tree grow?

The Avalanche™ Birch is a fast-growing tree that quickly reaches 50 feet tall with a 30-40 foot spread. This hardy hybrid thrives in USDA Zones 4-7 and establishes rapidly compared to other birch varieties. Plant it where you want quick shade and year-round visual impact.

Does Avalanche™ Birch Tree need a lot of water, and how often should I water it?

Avalanche™ Birch has moderate water needs and adapts well to varying soil conditions in zones 4-7. Water deeply once weekly during the first two growing seasons, then reduce frequency as this hardy hybrid establishes. Shop Nature Hills for this low-maintenance tree.

Is Avalanche™ Birch Tree resistant to bronze birch borer?

Avalanche™ Birch is more resistant to bronze birch borer than other white birch varieties, thanks to its hybrid breeding. This disease-resistant selection was specifically developed to withstand common birch pests and diseases. Plant in zones 4-7 for best resistance and overall performance.

What is the best sun exposure for Avalanche™ Birch Tree—full sun or part shade?

Avalanche™ Birch performs best in full sun to partial shade conditions. This hardy tree adapts well to varying light levels across USDA Zones 4-7. For optimal growth and bark development, choose a location with at least 6 hours of direct sunlight daily.

When and how should I prune Avalanche™ Birch Tree?

Prune Avalanche™ Birch during late fall or winter dormancy to avoid sap bleeding. Remove dead, damaged, or crossing branches while the tree is young to establish good structure. Light pruning maintains its natural graceful form as it reaches 50 feet. Find quality specimens at naturehills.com.

Does Avalanche™ Birch Tree lose its leaves in winter, and what winter interest does it provide?

Yes, Avalanche™ Birch is deciduous and drops its leaves in winter. The brilliant white bark becomes the star feature during dormant months, creating striking contrast against snow and bare landscapes in zones 4-7. Plant where you can enjoy the dramatic white trunk display from indoor viewing areas.

What size are the trees shipped as, and how is shipping handled for Avalanche™ Birch?

Avalanche™ Birch trees are typically shipped as young nursery stock, usually 4-6 feet tall. These fast-growing trees quickly establish and can reach their mature 50-foot height within years. Plant in USDA zones 4-7 for best results and expect standard nursery shipping timelines based on your location's planting season.