Hemlock Sapling Mortality Calculator for Post-Fire Restoration

Targeting Ecosystem recovery? Calculate the exact Hemlock order volume needed to overcome Hydrophobic soil layers.

Project Goals

Desired Final DensityTrees surviving per acre/hectare

Expected Mortality55% loss expected

0%55%95%

Cost Per Seedling ($)

Trees to Order

889seedlings

Buy 489 extra to account for loss.

Ideal Budget (No Loss)$1,000.00

Real Budget$2,222.50

Cost of Mortality+$1,222.50

"To have 400 survivors in your Post-Fire Restoration project, you need to plant 122% more trees."

The Challenge

Every restoration project faces unique pressures. In the context of Post-Fire Restoration, the primary failure point is often Hydrophobic soil layers.

Breaking up water repellent soil crusts may be necessary to improve water infiltration. To achieve Ecosystem recovery, project managers cannot rely on "best-case" survival rates. Budgeting for a 55% mortality rate is a realistic baseline.

Planning Breakdown

The Goal

Establish 400 mature stems/acre.

The Risk

At 55% mortality, you will lose 489 trees/acre.

The Solution

Order 889 seedlings. This "gross-up" ensures you hit targets despite natural loss.

Silvics of Hemlock

Tsuga spp.

Growth Profile

Classified as a Shade tolerant conifer. While valuable for Winter wildlife cover, it is notably susceptible to Woolly adelgid during establishment.

Planter's Tip

"Treat aggressively if white woolly masses appear on needle undersides."