Just Gerald Seaweed Company — Roberts Creek, BC — Pacific Northwest

The Preparations

I start with fresh Saccharina latissima from the BC coast, rinse it clean, and ferment it myself, slowly, for 2–6 months. No shortcuts. No industrial equipment. Two products: a foliar preparation and a more concentrated soil preparation. Small batches. Seasonal. Used by growers across the Pacific Northwest — Zones 6b through 9a. That's the whole story.

How I Make It

Slow Fermentation —
My Way, 2 to 6 Months

I start with fresh Saccharina latissima from the BC coast. I rinse it thoroughly, then ferment it. The species is naturally stress-adapted — that's part of what makes it biochemically interesting. I've been working with it long enough to know the process well.

Slowly. Anywhere from 2 to 6 months depending on the batch. No synthetic additives. No industrial equipment. Just the kelp, time, and my process. I do every step myself, here in Roberts Creek.

What comes out is a dark, aromatic liquid with a complex biochemical profile — shaped by the kelp and the slow passage of time. I bottle it in small seasonal batches.

Fermentation process
FERMENTATION VESSEL
Saccharina latissima — Anaerobic Fermentation
Roberts Creek, BC · 2–6 month process
01
Rinse

Fresh Saccharina latissima from the Sunshine Coast is rinsed clean before fermentation begins

02
Prepare

Kelp is cleaned and prepared for fermentation — no synthetic additives

03
Ferment

Slow anaerobic fermentation for 2–6 months — founder-led, no synthetic additives, no shortcuts

04
Extract

The fermented liquid is extracted and bottled in small seasonal batches — as a foliar preparation or a more concentrated soil preparation

Product Range

Two Formulations

Foliar Spray
PRODUCT 01
Foliar Spray
Saccharina latissima fermentate — foliar preparation

A ready-to-use foliar preparation applied as a fine mist to leaf surfaces. Made from slow-fermented Saccharina latissima from the BC coast. Dark amber in colour with a characteristic coastal aroma. Contains the naturally occurring biochemical profile of fermented kelp — polysaccharides, amino acids, minerals, and phytohormones as documented in the nutrient table below.

Ready to use — no dilution required
Small-batch, seasonal production from Roberts Creek, BC
Saccharina latissima — fresh, rinsed, Sunshine Coast
Slow fermentation: 2–6 months, founder-led process
No synthetic additives or preservatives
APPLICATION RATE
Ready to use — no dilution required. Apply as a fine mist to leaf surfaces in early morning or evening. Store in a cool, dark place. Shake before use.
PRICING (CAD)
$28
500 mL
$48
1 L
Order by Email
Root drench application — liquid concentrate poured into root zone
PRODUCT 02
Root Drench
Saccharina latissima fermentate — soil preparation

A more concentrated soil preparation applied directly to the root zone. Made from the same slow-fermented Saccharina latissima as the foliar preparation, but processed to a higher concentration. Deep brown in colour with a rich, earthy-coastal aroma. Contains the naturally occurring biochemical profile of fermented kelp as documented in the nutrient table below.

Ready to use — no dilution required
More concentrated formulation than the foliar preparation
Small-batch, seasonal production from Roberts Creek, BC
Saccharina latissima — fresh, rinsed, Sunshine Coast
No synthetic additives or preservatives
APPLICATION RATE
Ready to use — no dilution required. Apply directly to the root zone. Store in a cool, dark place. Shake before use.
PRICING (CAD)
$34
500 mL
$58
1 L
Order by Email
Biochemical Analysis

Nutrient Profile — Saccharina latissima

The following compounds are naturally present in Saccharina latissima. Values are approximate and based on published scientific literature for this species (DW = Dry Weight basis). The "Plant Benefit" column reflects information from published phycological research and is provided for educational purposes only.

COMPOUNDCATEGORYCONCENTRATIONDOCUMENTED IN LITERATURE
AlginatesPolysaccharide15–30% DWSoil water retention, structure improvement
FucoidanPolysaccharide2–8% DWImmune elicitor, stress resistance
LaminarinPolysaccharide1–5% DWPlant defence activation
MannitolOsmolyte10–20% DWOsmotic stress tolerance
CytokininsPhytohormoneTrace–LowCell division, shoot growth
Auxins (IAA)PhytohormoneTraceRoot initiation and elongation
BetainesAmino acid derivativePresentDrought and salt stress protection
Amino AcidsNitrogen source~10% DWProtein synthesis, soil microbiome
Potassium (K)MacronutrientHighStomatal regulation, fruit quality
Calcium (Ca)MacronutrientModerateCell wall integrity
Magnesium (Mg)MacronutrientModerateChlorophyll synthesis
Iron (Fe)MicronutrientPresentEnzyme function, chlorophyll
Zinc (Zn)MicronutrientPresentEnzyme activation, growth regulation
Iodine (I)MicronutrientHighAntioxidant, plant stress response

Sources: Published phycology literature. Fermentation may alter concentrations and bioavailability.

How to Order

Order by Email

We are a small, home-based operation in Roberts Creek, BC. All orders are handled personally by email. Please include the preparation(s) you're interested in, your location, and any questions you have about the product or the process.

Foliar Spray
Available in 500mL and 1L bottles
Root Drench
Available in 500mL and 1L bottles
Combined Kit
One of each — ideal for new customers
Email to Order

[email protected]

Applying kelp spray
Merch — Metal Plates & Signs

Get the Badge on Metal

The Just Gerald logo is available as a real metal plate — the kind you bolt to something and leave there for 40 years. Order one-off through any of the services below, or contact us if you want a batch for your greenhouse, shed, or Land Rover.

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Print-on-demand vintage tin signs in multiple sizes. The rustic amber plate look at a low price point. Good for gifting or decorating a potting shed.

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To order a custom plate with the Just Gerald logo, download the logo files from this page and upload them to your chosen service. For bulk orders or custom sizing, email us at [email protected].