The St. Louis Moraines and Tamarack Lowlands (region 4 in the map shown here) covers parts of Itasca, Aitkin, Carlton, St. Louis, Crow Wing, and Cass Counties. These areas have been shaped by the glacial history of Minnesota, just like the rest of the state.
Rolling hills in this area of the state are caused by glacial deposits which are called moraines. Lowlands cover a large part of this region as a result of ancient lake plains, where glaciers previously melted and left behind flat topography with lacustrine (lake drainage) deposits. The Sax-Zim Bog is a great example of this landform.
The low-lying topography and wet conditions led to the accumulation of slowly-decomposing vegetative material called peat on top of those lacustrine deposits. These conditions created the large areas of bogs that we see today, characterized by tree species such as black spruce and tamarack, but also a great diversity of bird species. The Sax-Zim Bog is a very popular destination for Minnesota’s birders.
Envision the future of your land
Just as it’s important for you to understand the history of your land, you should also think critically about its future, especially in light of a changing climate. What do you envision the future of your backyard woods to look like? Do you want your woodland to look the same as it does today, or do you want it to change in some way? Do you want a different cover type, for it to become more diverse, or perhaps you hope for an increase in a certain species? Understanding your vision for the future of your backyard woods is the first step in creating a plan to manage your land in the face of climate change.
Below you will find lists of recommended trees and understory plants for backyard woods in the St. Louis Moraines - Tamarack Lowlands. All of the trees and plants on this list are native to Minnesota or nearby in the Eastern Deciduous Forest, climate resilient, and beneficial to the pollinators, birds, bats and other creatures that call your woods home.
Some of these species, such as yellow birch, are currently native to this region of the state and are expected to be resilient to the impacts of a changing climate. Other species may be native to Minnesota but not to this region of the state, such as black walnut. And some of the species on this list, such as sweetgum, are not currently native to Minnesota, but are predicted to thrive in your area’s future climate.
We highly recommend that you work with a forester or another natural resource professional to determine if implementing assisted migration strategies is the best option for your land and goals. Climate-smart management strategies can fall anywhere on the spectrum of Resistance, Resilience, or Transition. Your goals and desired future conditions will help you to decide if assisted migration (a method of transition) is the best option for you.
Recommended trees for the St. Louis Moraines and Tamarack Lowlands
Common name | Scientific name | Plant type | Height (feet) | Width/Spread (feet) | Soil requirements | Light requirements |
---|---|---|---|---|---|---|
serviceberry | Amelanchier spp. | Shrub, Tree | 30' | 15' | Prefers clay, does well in medium to course texture | Sun to part shade |
yellow birch | Betula alleghaniensis | Tree | 45' | 50' | Prefers deep, well-drained loam, but tolerates rocky soil or shallow peat | Full to part sun |
pignut hickory | Carya glabra | Tree | 60 - 80' | 25 - 40' | Adaptable | Full to part sun |
shagbark hickory | Carya ovata | Tree | 80' | 35' | Dry sandy or rocky soil | Full to part sun |
mockernut hickory | Carya tomentosa | Tree | 85' | 60' | Good drainage, moist, occasionally dry | Full to part sun |
beaked hazelnut | Corylus cornuta | Shrub | 12' | 9' | Prefers medium textured soil | Full sun |
bush honeysuckle | Diervilla lonicera | Shrub | 3' | 4' | Adaptable | Full to part sun |
honeylocust | Gleditsia triacanthos | Shrub, Tree | 60' | 50' | Adaptable; prefers evenly-moist but tolerates alkaline, dry, and sandy soil | Full sun |
chokecherry | Prunus virginana | Shrub, Tree | 25' | 20' | Adaptable | Full sun |
swamp white oak | Quercus bicolor | Tree | 60' | 50' | Prefers evenly-moist but tolerates dry, sandy soil | Full to part sun |
post oak | Quercus stellata | Tree | 50 - 75' | 40 - 70' | Moist, well-drained, adaptable | Full sun |
wild rose | Rosa spp. | Shrub | 5' | 4' | Prefers evenly-moist, loamy soil; tolerates dry | Full to part sun |
eastern hemlock | Tsuga canadensis | Tree | 40' | 25' | Prefers well-drained | Full sun |
American elm | Ulmus americana | Tree | 35-45' | 20-35' | Average to wet soil | Sun to part shade |
Recommended plants for the St. Louis Moraines and Tamarack Lowlands
Common name | Scientific name | Height (inches) | Soil requirements | Light requirements |
---|---|---|---|---|
wild sarsaparilla | Aralia nudicaulis | 8 - 24" | Average to moist soil | Part to full shade |
bearberry | Arctostaphylos uva-ursi | 4 - 8" | Dry sandy or rocky soil | Sun to part shade |
pipsissewa | Chimaphila umbellata | 3 - 10" | Dry soil | Part to full shade |
large-leaved aster | Eurybia macrophylla | 60" | Adaptable | Part to full shade |
Canada mayflower | Maianthemum canadense | 6" | Acidic soil with high organic matter | Part to full shade |
mountain rice grass | Oryzopsis asperifolia | 10 - 26" | Alkaline, average to dry rocky soil | Sun to part shade |
Clayton's sweet cicely | Osmorhiza claytonii | 24" | Medium-wet to medium-dry | Shade |
hairy Solomon's seal | Polygonatum pubescens | 12 - 40" | Average to moist soil | Part to full shade |
dwarf raspberry | Rubus pubescens | 4 - 6" | Moist, organic-rich | Sun to shade |