The resin question at a Minnesota lake cabin

The sap is the planting decision. Dovetail Partners (2017): trees with evergreen needles are more flammable than broadleaved deciduous trees because most needle-leaved evergreens have leaves with lower moisture content, especially during drought, and sap containing flammable resins. In northeastern Minnesota the two most flammable tree species are balsam fir and black spruce. This site currently has no Picea mariana species record. Abies balsamea currently computes as avoid and includes MN. Minnesota DNR (2004): plant nothing within 3 to 5 feet of the structure, particularly if it is sided with wood, logs, or other flammable materials.

You are at an Ely cabin putting balsam against the logs for privacy because the tree already grows in the yard. Dovetail is telling you that tree is the ladder. The 2004 sheet is telling you the first three to five feet of a log wall is not a planting bed.

This is not a Minnesota doorway.

Why it matters

“Native conifer” is easy to hear as “safe at a cabin.” Dovetail’s opened guide is resin and moisture, then pull the fir. What do you plant when the forest is the fuel is Alaska black spruce with a species page. This page is a missing P. mariana record plus balsam avoid on a Minnesota lake lot. Zone 0 is still not a planting list.

This site’s Minnesota plant evidence combines 406 occurrence records with 38 exact Dovetail owners bounded to northeastern Minnesota. That is regional fire evidence, not a statewide balsam screen.

How it works

The resin (Dovetail, 2017):

• Needle evergreens vs broadleaf: lower moisture, especially in drought, and flammable resins in the sap.
• Two most flammable trees in northeastern Minnesota: balsam fir and black spruce.
• Also quite flammable: jack pine and white spruce. Somewhat less: white pine, red pine, white cedar.
• Balsam fir is typically considered the most hazardous wildfire fuel tree in northeastern Minnesota.
• Shade-tolerant fir and spruce fill in as dog-hair understories after decades of suppression.
• Jack pine requires fire to fully open cones. That is a forest fact, not a five-foot planting.

The fires Dovetail printed:

• About 200 ignitions a year in northeastern Minnesota (Dovetail citing MN DNR wildfire GIS, 2016).
• Ham Lake 2006, about 76,000 acres.
• Pagami Creek 2011, about 93,000 acres.
• Thin or sandy soils that dry in drought.

The cabin (Minnesota DNR):

• 2004: plant nothing 3 to 5 feet, especially on wood or log siding. Decorative rock as nonflammable ground cover.
• 2004 exception: if siding is noncombustible, widely spaced low shrubs or other “fire resistant” plants are acceptable. Do not plant under windows or next to foundation vents. That exception is not Dovetail’s “plant nothing” sentence, and it is not IBHS Zone 0.
• 2004: ideally remove all conifer trees from the 30-foot Intensive Zone. Keep a few favorites only if crowns are 10 feet apart and pruned at least 8 feet.
• 2004: heavier fuels — brush and coniferous trees — produce a more intense fire than grassy fuels.
• 2024 handbook: DNR averages over 1,000 wildfires a year; over 90% people-caused; 2021, over 2,000. If the house is surrounded by evergreens, firefighters may bypass. Defensible space up to 100 feet around a home or cabin.

Two tables, two authors:

• Dovetail Table 2 is Dovetail’s own work: UF/IFAS Circular 1453 key on 38 non-invasive plants. Low = 3 to 30 feet. Moderate = beyond 30 feet. These are mostly perennials and groundcovers, not spruce.
• Dovetail Table 1 is Manitoba FireSmart, reprinted. Aspen Very Low. Birch Low. Black spruce Very High. Balsam fir Very High. White spruce High. Jack pine High. Tamarack Low. Do not store Table 1 as if Dovetail scored those trees.

The Wisconsin guide Minnesota hosts:

• PUB-FR-417-2008 (September 2008), on files.dnr.state.mn.us. First 3-to-5 feet free of any fuel. Within 30 feet, not more than a few scattered evergreens. Deciduous trees typically burn with much less intensity than evergreens. Plant deciduous trees, not evergreens, if you plant close.

This directory:

• Minnesota: 406 records. 260 on-list, 32 avoid, 3 conflict, 111 candidate.
• No Picea mariana. No Pinus banksiana.
• Abies balsamea avoid, limited-evidence, MN.
• Picea glauca conflict, MN.
• Pinus strobus avoid, MN.
• Pinus resinosa avoid, MN.
• Populus tremuloides on-list, consensus, MN.
• Betula papyrifera on-list, limited-evidence, MN. Stored FPS claim: peeling papery bark and multi-trunk trees add fire potential. That caveat stays on the row.
• Asclepias tuberosa on-list, consensus, MN, with a stored Dovetail Low row (plantable 3–30 feet).
• Diervilla lonicera on-list, limited-evidence, MN, with a stored Dovetail Low row.
• Larix laricina candidate, MN. Manitoba’s table says tamarack Low. Candidate is not on-list.

See how to read a plant page.

The paths

What people mix up

• A native balsam with a fire-resistant cabin tree.
• Dovetail’s Table 2 (perennials they scored) with Table 1 (Manitoba’s boreal trees).
• White spruce on this site with black spruce. One has a page (conflict). The other does not.
• Jack pine’s serotinous cones with a yard pine. This site has no Pinus banksiana page. See Kirtland’s warbler country.
• Alaska black spruce (FEIS + Firewise Alaska) with Minnesota black spruce (named by Dovetail, no YAML here).
• The 2004 noncombustible-siding exception with Dovetail’s plant nothing and with IBHS 0–5-foot noncombustible.
• On-list aspen or birch with a five-foot planting.
• 1894’s 413 dead, or Ham Lake and Pagami Creek, with “Minnesota doesn’t burn.”
• A 30-foot Intensive Zone with the first five feet.

How to check

1. Open Dovetail 2017. Read the resin sentence. Read “balsam fir and black spruce.” Read the Table 1 footnote: Manitoba FireSmart.
2. Search this site for Picea mariana. There is no species page.
3. Open Abies balsamea and Picea glauca.
4. Open Creating a Firewise Property (2004) and the 2024 handbook. Read 3 to 5 feet, “ideally remove all conifer trees,” and “surrounded by evergreens.”
5. Open Minnesota plant evidence. Distribution is not a recommendation.
6. Do not plant in Zone 0.

Limits

This page quotes the opened Dovetail 2017 PDF, the opened 2004 Minnesota DNR property sheet, the opened 2024 Minnesota Firewise Handbook, and the opened 2008 Wisconsin guide hosted by Minnesota DNR. Live dnr.state.mn.us HTML (Firewise index, landscaper, defensible-space pages) returned HTTP 403 to curl this session and is not quoted. Ham Lake and Pagami Creek acreage and the “200 ignitions a year” line are printed as Dovetail printed them, with Dovetail’s footnotes; this page does not independently recount those fires. Table 1 values are Manitoba FireSmart as reprinted by Dovetail, not Dovetail’s UF/IFAS scores. The 406 occurrence rows and 38 Dovetail owners are directory counts, not DNR statistics. There is no Picea mariana record and no Pinus banksiana record; this page does not invent them. The 2004 sheet compiles Colorado, Wyoming, and Wisconsin publications; it is not a Minnesota-original species list. Zone 0 is not a planting list.

Related records

• Abies balsamea
• Picea glauca
• Asclepias tuberosa
• Minnesota plant evidence
• What do you plant when the forest is the fuel
• What Kirtland’s warbler country teaches
• Glossary: Zone 0