The 10 Best Privacy Trees for the St. Croix Valley (MN & WI)
Local Planting and Selection Guide
Having a sanctuary where you can unwind and enjoy some solitude is important to our well being. One of the most effective ways to create privacy in your yard is by incorporating privacy trees. In the St. Croix Valley, with our diverse and sometimes harsh climate, selecting the right species of privacy tree is crucial if you are looking for the best privacy trees in Minnesota and Wisconsin. In this blog post, we will explore some of the best privacy trees for Minnesota and Wisconsin, considering factors like hardiness, growth rate, and visual appeal.
Considerations for the Best Privacy Trees in Minnesota & the St. Croix Valley
Choosing the right privacy screen in the St. Croix Valley requires more than just picking a fast-growing tree; it requires an understanding of our unique “River Valley” geography. Because Stillwater and Hudson sit in a transitional climate zone, your success depends on matching the tree species to your specific side of the river.
The Soil Challenge (Clay vs. Sandy Loam):
The soil composition in our area varies significantly by elevation. If you are located on the bluffs of Stillwater, you are likely dealing with heavy clay soils that retain moisture. Conversely, closer to the St. Croix River and over in Hudson, we frequently encounter sandy loam. This soil drains quickly, meaning your new privacy trees will require more frequent supplemental watering to prevent root desiccation.
The Microclimate (Zone 4 & River Winds):
While the Twin Cities are often considered Zone 4b, the St. Croix Valley acts as a funnel for cold air, often creating a microclimate where late spring frosts occur later than in the city. The “River Effect” also brings high-velocity winds that can whip across open lots, causing physical damage to brittle branches and drying out evergreen needles.
| Species | Growth Rate | Mature Height | Best Use / Local Soil | Valley Rating |
|---|---|---|---|---|
| Techny Arborvitae (Thuja occidentalis ‘Techny’) | Medium | 12–15′ | Top Pick: Best for tight spaces; handles MN winter wind. | |
| Norway Spruce (Picea abies) | Fast | 40–60′ | Windbreaks: Toughest option for open acreage. | |
| Black Hills Spruce (Picea glauca var. densata) | Slow/Med | 25–40′ | Durability: Slower but much denser than other spruces. | |
| White Pine (Pinus strobus) | Fast | 50–80′ | Native Screening: Best for large, naturalized borders. | |
| Green Giant Arborvitae (Thuja standishii x plicata) | Very Fast | 30–50′ | Rapid Privacy: Needs protection from heavy river winds. | |
| American Arborvitae (Thuja occidentalis) | Medium | 20–30′ | Natural Hedges: The classic native “White Cedar.” | |
| Eastern Hemlock (Tsuga canadensis) | Medium | 40–70′ | Shade Privacy: Rare tree that grows in North-facing shade. | |
| Red Maple (Acer rubrum) | Fast | Fast | Summer Screen: Best for seasonal privacy and fall color. | |
| Colorado Blue Spruce (Picea pungens) | Slow | 30–60′ | Color Accent: High deer resistance; avoid in wet clay. | |
| Bur Oak (Quercus macrocarpa) | Slow | 60–80′ | Legacy Border: Tough as nails, but slow to provide privacy. |
Pro-Tip for St. Croix Valley Homeowners
While the Green Giant is famous for speed, it can struggle with “winter bronzing” in the St. Croix Valley if not sited correctly. For 100% reliability in our local Zone 4 climate, we almost always recommend the Techny Arborvitae or Black Hills Spruce.
Top 10 Best Privacy Trees for Minnesota
White Pine (Pinus strobus)
The White Pine, also known as the Eastern White Pine, is a classic choice for one of the best privacy trees in Minnesota. It is a native evergreen tree with soft, blue-green needles that provide year-round coverage. With a rapid growth rate, the White Pine can quickly form a dense barrier, ensuring privacy for your property. It thrives in various soil types, including the well-drained acidic soils commonly found in Minnesota. Additionally, the White Pine’s elegant, pyramidal shape adds a touch of sophistication to any landscape.
Colorado Blue Spruce (Picea pungens)
If you desire a more vibrant and eye-catching option, the Colorado Blue Spruce is an excellent choice for one of the best privacy trees in Minnesota. This tree features striking blue foliage that retains its color throughout the year, creating a visually appealing privacy screen. The Colorado Blue Spruce is a hardy tree that can tolerate Minnesota’s harsh winters and adapt to various soil conditions. Its dense branching and conical shape make it a popular choice for both aesthetic and practical purposes.
Norway Spruce (Picea abies)
Another exceptional evergreen option for the best privacy trees in Minnesota is the Norway Spruce. This tree exhibits dark green foliage and a dense growth habit that guarantees privacy. The Norway Spruce’s adaptability to various soil types, including heavy clay and sandy soils, makes it an excellent choice for different regions of Minnesota. With a fast growth rate, this evergreen can quickly provide the desired seclusion for your outdoor space.
American Arborvitae (Thuja occidentalis)
The American Arborvitae, also know as White Cedar or Eastern Arborvitae, is a popular choice for the best privacy trees in Minnesota and the St. Croix Valley due to its versatility and rapid growth rate. This tree features soft, scale-like foliage that maintains its vibrant green color throughout the year. It forms a dense, narrow pyramid shape that requires minimal maintenance. The American Arborvitae is well-suited to Minnesota’s climate and is tolerant of various soil conditions. Its elegant appearance and dense foliage make it and excellent choice for creating natural privacy screen.
Black Hills Spruce (Picea glauca var. densata)
The Black Hills Spruce, a variant of the White Spruce, is a hardy evergreen tree that thrives in our region’s colder climates, making it a top choice for one of the best privacy trees in Minnesota. Its dense branching structure and rich green needles provide excellent privacy and windbreak capabilities. This tree is relatively slow-growing, making it ideal for those who prefer a more controlled growth rate. The Black Hills Spruce is adaptable to different soil types, including clay and loam, making it a suitable choice for various regions within the state.
Red Maple (Acer rubrum)
For those seeking privacy trees that offer more than just seclusion, the Red Maple is an excellent option. While it is not an evergreen like the previous recommendations, it provides vibrant foliage throughout the year. In spring, the Red Maple displays stunning red flowers, followed by lush green leaves during summer and vibrant red, orange, and yellow hues in the fall. Its medium to fast growth rate ensures privacy within a reasonable timeframe. The Red Maple is adaptable to a wide range of soil types, including the well-drained soils found in Minnesota. Beyond privacy, it adds aesthetic value to your landscape with its captivating colors definitely making it one of the best privacy trees in Minnesota.
Techny Arborvitae (Thuja occidentalis ‘Techny’)
The Techny Arborvitae is a popular privacy tree known for its durability and adaptability to Minnesota’s climate. It features dense, dark green foliage that retains its color throughout the year. This evergreen tree has a pyramidal shape and a moderate growth rate, making it an excellent choice for creating a reliable privacy screen. The Techny Arborvitae tolerates a variety of soil conditions, including clay and loam, and requires minimal maintenance, making it a practical option for homeowners seeking only the best privacy trees in Minnesota.
Bur Oak (Quercus macrocarpa)
If you prefer the charm of deciduous trees, the Bur Oak is a fantastic choice for privacy in Minnesota. This native tree showcases large, leathery leaves that turn a beautiful golden yellow in the fall. The Bur Oak is known for its sturdy and long-lived nature, providing privacy and shade for many years. While it takes longer to establish a dense screen compared to evergreens, the Bur Oak compensates with its grandeur and the ecological benefits it offers, such as attracting wildlife and providing habitat.
Green Giant Arborvitae (Thuja standishii x plicata ‘Green Giant’)
The Green Giant Arborvitae is a fast-growing evergreen tree that offers exceptional privacy capabilities. With its rapid growth rate of up to three feet per year, it quickly forms a dense barrier. This hybrid variety combines the best characteristics of its parent species, resulting in a tree that is both vigorous and hardy, capable of withstanding Minnesota’s challenging weather conditions. The Green Giant Arborvitae exhibits vibrant green foliage and has a naturally conical shape, requiring minimal pruning to maintain privacy.
Eastern Hemlock (Tsuga canadensis)
The Eastern Hemlock, a native evergreen tree, is an excellent choice for creating privacy in shady areas of your landscape. Its soft, feathery foliage provides a lush and dense screen, ensuring seclusion. The Eastern Hemlock prefers slightly acidic, moist soils, making it suitable for certain regions of Minnesota. While its growth rate is slower compared to some other options, the beauty and serenity it brings to your outdoor space are worth the wait.
Privacy Tree Considerations for Stillwater, Hudson, and the St. Croix Valley
Choosing the right privacy screen in the St. Croix Valley requires more than just picking a fast-growing tree; it requires an understanding of our unique “River Valley” geography. Because Stillwater and Hudson sit in a transitional climate zone, your success depends on matching the tree species to your specific side of the river.
The Soil Challenge: Clay vs. Sandy Loam
The soil composition in our area varies significantly by elevation. If you are located on the bluffs of Stillwater, you are likely dealing with heavy clay soils that retain moisture and can “drown” certain evergreens like the Colorado Blue Spruce. Conversely, closer to the St. Croix River and over in Hudson, we frequently encounter sandy loam. This soil drains quickly, meaning your new privacy trees will require more frequent supplemental watering during our hot Minnesota summers to prevent root desiccation.
The Microclimate: Zone 4 & River Winds
While the Twin Cities are often considered Zone 4b, the St. Croix Valley acts as a funnel for cold air, often creating a microclimate where late spring frosts occur a week later than in the city. When planting privacy trees, we must account for the USDA Hardiness Zone 4 requirements. The “River Effect” also brings high-velocity winds that can whip across open lots, causing physical damage to brittle branches and drying out evergreen needles.
Pro-Tip for St. Croix Valley Homeowners
In the St. Croix Valley, we often see Arborvitae suffer from ‘winter burn’ due to the harsh, dry winds blowing off the river. To protect your investment, we recommend a deep-root watering in late October and the application of an anti-desiccant spray for all new privacy plantings. This ‘locks in’ moisture before the ground freezes.
