Digging Deeper: Soil's Role in Water Stewardship
In California, water is always part of the conversation.
Some years we have too much.
Some years not nearly enough.
And every year, it matters.
At Earth Wake, water stewardship isn’t a marketing phrase.
It’s daily practice.
And it all starts underground.
__________________________________________________________
Why Organic Matter In The Soil Changes Everything
First…what is organic matter?
Organic matter is decomposed plant and animal material, things like composted leaves, cover crops, roots, and natural manure that break down and become part of the soil. It’s the living and once-living material that gives soil structure, life, and resilience.
Here’s something powerful:
For every 1% increase in organic matter, soil can hold up to 20,000 more gallons of water per acre.
That means:
Healthier soil
= more water stored naturally
= less irrigation needed
= less runoff
= less waste
Organic matter improves water retention the natural way by increasing cation exchange, and it has other benefits as well.
We’d rather build soil than chase inputs.
__________________________________________________________
Soil Is Like a Magnet?!
It’s a little more complicated than this, but here’s the basic idea.
Soil particles carry positive and negative magnetic charges (aka cations and anions).
Nitrogen and other nutrients carry magnetic charges too.
If the soil doesn’t have enough “magnetic pull” (what scientists call cation exchange capacity), nutrients – like nitrogen - don’t stick around.
They leach.
They move past the roots.
They move toward groundwater.
They move into waterways.
Increasing organic matter increases the natural magnetic charges in the soil (cation exchange).
Instead of nutrients and water easily leaching away, they’re held in place similarly to how a magnet holds on to iron, keeping them available for the plant when it needs them.
Ever spray water on dry dusty ground on a sunny summer day and notice it beads up?
That interaction? That’s the electric charge at work.
Nature already built the system.
We work in harmony with it.
__________________________________________________________
How We Build Living Soil
Cover Crops & Mulch
Cover crops are plants we grow between orchard rows, not to harvest, but to protect and nourish the soil. Think grasses, legumes, and other soil-building plants that keep the ground covered instead of bare.
But the real magic isn’t just what you see above ground.
It’s what’s happening below.
The root systems of cover crops grow deep into the soil, creating tiny channels that improve structure and airflow. Those roots:
• Break up compacted soil
• Help water move downward instead of running off
• Feed beneficial microbes through natural root exudates
• Leave behind organic matter when they decompose
When we mow them down and work them back into the soil, they become mulch, a protective layer of plant material that breaks down over time and feeds the earth.
That organic matter:
• Improves water holding capacity
• Increases nutrient retention
• Supports microbial life
• Reduces erosion
Instead of leaving soil exposed to sun, wind, and runoff, we keep it living and protected, above and below the surface.
It’s one of the simplest, and most powerful, tools we have.
__________________________________________________________
Composting
We use a blend of plant material and composted animal manure to feed the soil.
It’s rich.
It’s alive.
And it builds structure underground.
Food scraps don’t belong in landfills. They belong back in the soil.
When organic matter returns to the earth, it becomes part of the water cycle again — not waste.
__________________________________________________________
Mycorrhizal Fungi: Nature’s Underground Network
Before we plant our trees, we inoculate the roots with beneficial fungi — called mycorrhizae.
There are two main types:
- Endomycorrhizae
- Ectomycorrhizae
These fungi form a symbiotic relationship with the roots.
Think of them as microscopic extensions of the tree’s root system.
They help:
• Increase water uptake
• Improve nutrient absorption
• Build drought resilience
• Strengthen overall plant health
We mix the inoculant in a large tub and treat the roots before planting. Throughout the summer, we continue encouraging microbial life in the soil.
Stronger soil biology = stronger trees.
__________________________________________________________
How We Irrigate
Our irrigation season runs from April through September.
We open our pipeline from the reservoir and flood irrigate the orchard every 20–25 days based on plant needs and our water allotment.
It takes about 4–5 hours to flood a 20-acre orchard.
But here’s the key:
Because our soil holds water well and our trees are robust, they’re resilient. If irrigation timing needs to be stretched, they can handle it.
That resilience comes from soil health…not overwatering.
__________________________________________________________
The Bigger Picture in California
California has historically relied heavily on dams for water storage.
And while they’ve played a role, we now know large-scale systems don’t always work in harmony with natural cycles.
What we urgently need are smarter, sustainable reservoir strategies, systems that capture excess water in wet years before it runs off into the ocean.
Right now, California’s water situation is stable.
But stability can change quickly.
That’s why we focus on long-term resilience:
Better soil.
Smarter water use.
Practices that align with nature.
Because resilience isn’t reactive.
It’s built over time.
__________________________________________________________
At Earth Wake, everything we do, from soil building to water management, is about long-term thinking.
Because healthy soil doesn’t just grow better healthier fruit.
It conserves water.
It protects ecosystems.
And it creates a future we can feel good about.
Eat well.
Wake up your food.
And remember, the real work happens underground.