Pine Rider Regeneration Project (St. Louis Cty, MN)

State or Province
Nearest city or town
St. Louis County
Cover type
Plant community detail and growth stage
White pine with a red pine component
Forest health threats
Adaptive silviculture options
Silviculture system
Estimated year of stand origin
Site index
67 feet
for species
white pine
Brief silvicultural objective
Regenerate white and red pine using a shelterwood system and controlling competition with herbicide
Site preparation method
Soil texture
Soil details
Well drained sandy loam

47.05776, -92.097232


This project is for White and Red Pine regeneration by shelterwood.

Silviculture Objective(s)

This project is to regenerate the pine types in the stand by partial harvest and the following site treatments:

  • Herbicide to control competition
  • Seedbed preparation by mechanical scarification 
  • Control of browse damage to regeneration as needed
  • Final removal of over story when white pine regeneration is established.

Pre-treatment stand description and condition

Stand establishment and management history: 

  • Harvesting of White pine at the start of the 20th century left large stumps still evident on site. The existing white pine was likely a young understory released by the first harvest.
  • There was some red and white pine planted in part of the site in the 1950’s, not a large area (3+acres).
  • There are stumps that appear to be from cutting done in the 1970’s of primarily small sawtimber white pine. This stand had a medium incidence of white pine blister rust. At that time, nearly all cutting of white pine on county land was done to remove “dead top” pine. 

Figure 1: Pine Rider site in 1939

Figure 2: Pine Rider site in 2013

Figure 3: Pine Rider site hillshade imagery

Figure 4: Pine Rider site pre-treatment

Silviculture Prescription

The site is to be harvested to remove a portion of the over story and most of the understory,  retaining a target of 60 ft2 basal area of predominantly white pine (77%) and red pine (23%). Post-harvest the site is to be treated to create a seed bed for natural seeding. Control of broadleaved competition species was planned to be done by the means of herbicides. The site will also be treated mechanically to create soil exposure, exact means to be determined later. 

What actually happened during the treatment

The original prescription noted the use of herbicide then a mechanical site prep but due to the minimal competition and relatively heavy over story we did not do a herbicide treatment but just trenched the site in fall 2016.  We will now hope for a good seed year for that stand and see what nature will produce. 

Figure 5: Jason Meyer of St Louis County Land and Minerals discussing the Pine Rider site pre-treatment during a September 2015 tour


Figure 6: Looking into a treated area during a September 2015 tour

Other notes

The large diameter made it possible to leave a higher basal area in parts of the site and still allow for equipment use between trees. Some areas in the site exceeded the 60 BA target.