The Details
Why Biochar?
At Circle Soil, we believe better soil starts with better ingredients—and there’s no ingredient more powerful or sustainable than biochar.
Made from wildfire mitigation wood waste in Utah, our biochar isn't just eco-friendly—it's plant-friendly. This ancient, carbon-rich material does wonders for your soil, supercharging plant health while helping heal the planet.
Biochar acts like a sponge in your soil—holding water in its porous structure and releasing it slowly as your plant needs it. This means:
- Less frequent watering for you
- Consistent hydration for your plants
- Reduced risk of root rot from overwatering
Studies show biochar can increase water holding capacity by 20–60%, especially in lighter soils like those used in houseplant mixes.
Fertilizer isn’t much good if it washes away. Biochar holds onto essential nutrients like nitrogen, potassium, and phosphorus—making them more available to your plant’s roots over time.
- Enhances nutrient retention and reduces leaching
- Boosts fertilizer efficiency, so you use less
- Improves long-term soil fertility
It acts as a buffer, keeping nutrients where they belong: in the root zone.
Biochar’s porous structure creates the perfect habitat for beneficial soil microbes and fungi. These microscopic helpers:
- Break down organic matter to release nutrients
- Form symbiotic relationships with roots to boost uptake
- Build a living, breathing soil ecosystem
Biochar creates the biological foundation your plant needs to thrive in an indoor container environment.
Unlike traditional soil ingredients, biochar is a carbon-negative material. It locks carbon away for centuries—instead of releasing it as CO₂.
By choosing Circle Soil, you're:
- Diverting wood waste from open burns or landfills
- Reducing smoke pollution in nearby communities
- Helping keep carbon in the ground, where it belongs
Every handful of Circle Soil helps combat climate change. That’s real impact in every pot.
Biochar acts like a sponge in your soil—holding water in its porous structure and releasing it slowly as your plant needs it. This means:
- Less frequent watering for you
- Consistent hydration for your plants
- Reduced risk of root rot from overwatering
Studies show biochar can increase water holding capacity by 20–60%, especially in lighter soils like those used in houseplant mixes.
Fertilizer isn’t much good if it washes away. Biochar holds onto essential nutrients like nitrogen, potassium, and phosphorus—making them more available to your plant’s roots over time.
- Enhances nutrient retention and reduces leaching
- Boosts fertilizer efficiency, so you use less
- Improves long-term soil fertility
It acts as a buffer, keeping nutrients where they belong: in the root zone.
Biochar’s porous structure creates the perfect habitat for beneficial soil microbes and fungi. These microscopic helpers:
- Break down organic matter to release nutrients
- Form symbiotic relationships with roots to boost uptake
- Build a living, breathing soil ecosystem
Biochar creates the biological foundation your plant needs to thrive in an indoor container environment.
Unlike traditional soil ingredients, biochar is a carbon-negative material. It locks carbon away for centuries—instead of releasing it as CO₂.
By choosing Circle Soil, you're:
- Diverting wood waste from open burns or landfills
- Reducing smoke pollution in nearby communities
- Helping keep carbon in the ground, where it belongs
Every handful of Circle Soil helps combat climate change. That’s real impact in every pot.
Most soil brands don’t include biochar—because it’s harder to source and more expensive to produce. But at Circle Soil, it’s our core ingredient. Why? Because we’ve seen the difference it makes:
Happier Houseplants
Biochar creates the ideal environment for plants to thrive—improving aeration, balancing moisture, and fostering beneficial microbes.
Healthier Root Systems
Thanks to its porous structure, biochar keeps roots oxygenated and supports microbial life, promoting stronger, more resilient growth.
Less Watering & Feeding
Biochar acts like a sponge, holding water and nutrients in the soil and releasing them slowly when your soil needs it—reducing the need for constant care, and using less water!
Longer-lasting Soil Vitality
Unlike other amendments that break down quickly, biochar stays active in the soil for years, supporting larger, healthier plants, season after season.
Biochar creates the ideal environment for plants to thrive—improving aeration, balancing moisture, and fostering beneficial microbes.
Thanks to its porous structure, biochar keeps roots oxygenated and supports microbial life, promoting stronger, more resilient growth.
Biochar acts like a sponge, holding water and nutrients in the soil and releasing them slowly when your soil needs it—reducing the need for constant care, and using less water!
Unlike other amendments that break down quickly, biochar stays active in the soil for years, supporting larger, healthier plants, season after season.
Ready to Grow Better?
Experience what biochar-powered soil can do for your houseplants.
Simple. Sustainable. Soil.