Healthy soil is at the heart of everything we do at Hart Farm Midvale. Across the property—whether in the orchard, the market garden, or the rolling grassland and wetland spaces—we work to build soil that supports a diverse and resilient landscape. We follow organic principles and return natural materials to the land through composting, vermiculture, and other practices that strengthen soil structure, biology, and long-term fertility. As we improve different areas of the property, we incorporate plant species that fit the local conditions and grow naturally alongside the native vegetation. The sections below describe the methods we use to build and support healthy soil throughout the farm.
We create compost using a balanced mix of carbon-rich and nitrogen-rich materials sourced from our home, our farm, and local businesses. We also supplement with locally sourced OMRI-certified compost when establishing new plantings or expanding growing areas. As our on-farm composting and vermiculture systems continue to develop, our goal is to meet more of our soil-building needs directly on the farm.
As part of this process, we also incorporate biochar blended with compost and vermicompost. Biochar adds long-lasting carbon to the soil, improves moisture retention, and provides stable habitat for beneficial soil organisms.
High-Carbon Inputs
Chipped sunflower stalks
Ramial wood chips (small hardwood branches chipped on-site)
Fallen leaves and leaf mold
Straw and dry animal bedding
High-Nitrogen Inputs
Rabbit manure, urine, and bedding
Chicken manure and used coop bedding
Used coffee grounds sourced from a local coffee shop
Untreated grass clippings
Kitchen scraps and vegetable trimmings
Spent plants and crop residues from the market garden
This balanced blend, combined with the addition of biochar, supports healthy decomposition and a thriving microbial community, forming a strong foundation for soil fertility and structure across the farm.
We maintain a large vermiculture windrow populated with red wiggler composting worms (Eisenia fetida), a species known for efficiently breaking down organic matter. These worms transform diverse organic inputs into nutrient-rich vermicompost that supports healthy soil biology across the property.
A key part of our process is feeding alternating sides of the windrow. By adding fresh material to one side at a time, we encourage the worms to naturally migrate toward the newest food source. This allows us to harvest finished castings from the opposite side with minimal disturbance to the worms and without mechanical separation.
Inputs for the Worm Beds
Food scraps
Rabbit and chicken bedding
Coffee grounds
Leaf mold
Chipped sunflower stalks
Crop residues
Seasonal surplus pumpkins and other produce
Vermicompost from the Eisenia fetida beds adds beneficial microbes, improves soil structure, and supports resilient plant growth throughout the orchard, market garden, and habitat areas across the farm.
We brew actively aerated compost teas during the growing season to support microbial diversity and healthy soil biology. These teas rely on our own worm castings and farm-made compost, which supply beneficial organisms that help build living soil structure and support resilient plant growth.
Compost Tea Components
Worm castings
Farm-made compost
Non-chlorinated well water
Continuous aeration using electric pumps powered by our off-grid solar system
Where We Apply Compost Teas
Orchard tree wells
Young seedlings and transplants
Market garden beds
Mulched areas around shrubs and perennials
Woodland and wetland edges as appropriate
As a foliar application to plant surfaces
These teas help introduce beneficial soil organisms, improve nutrient cycling, and strengthen root systems throughout the property.