Douglas Fir Sapling Mortality Calculator for Urban Forestry
Targeting Green infrastructure? Calculate the exact Douglas Fir order volume needed to overcome Soil compaction.
Project Goals
Trees to Order
Buy 34 extra to account for loss.
"To have 50 survivors in your Urban Forestry project, you need to plant 68% more trees."
The Challenge
Every restoration project faces unique pressures. In the context of Urban Forestry, the primary failure point is often Soil compaction.
Urban soils often lack the pore space necessary for rapid root expansion. To achieve Green infrastructure, project managers cannot rely on "best-case" survival rates. Budgeting for a 40% mortality rate is a realistic baseline.
Planning Breakdown
The Goal
Establish 50 mature stems/acre.
The Risk
At 40% mortality, you will lose 34 trees/acre.
The Solution
Order 84 seedlings. This "gross-up" ensures you hit targets despite natural loss.
Silvics of Douglas Fir
Pseudotsuga menziesiiGrowth Profile
Classified as a Large evergreen conifer. While valuable for Structural lumber, it is notably susceptible to Root rot in wet soils during establishment.
Planter's Tip
"Ensure planting sites have excellent drainage to prevent fungal pathogens."