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Kelp Core Lab

Ledger Entry — Coastal Feeds

Seaweed feeds, measured out the way a ledger keeps its rows.

We prepare organic fertilizers and growth feeds from coastal kelp for vegetable beds across Japan, each batch dated, dosed, and noted the way a grower would want it recorded.

Ask About Your Beds
Coastal kelp beds used for seaweed extract

What We Deliver

A vegetable bed rarely fails for one obvious reason — it is usually a slow mismatch between what the soil holds and what the crop is asking for. We work from sampling and observation first, then supply feeds sized to what a plot actually needs, rather than a standard dose applied everywhere. The aim is a bed that keeps producing across a season, not a single strong flush followed by a decline.

Key Benefits

01

Batch-Dated Extracts

Every extract carries a collection date and drying method, so you know exactly what season's harvest went into the bottle.

02

Sampling Before Supply

We would rather test a bed than guess. Readings guide what, if anything, we recommend applying.

03

Crop-Specific Dilution

Fruiting crops, leaf crops, and root crops are dosed differently. Our ledgers reflect that rather than flattening it.

How It Works

Step 1

Send us a note on your plot size and what you're growing.

Step 2

We suggest sampling or a feeding plan depending on what you already know.

Step 3

You receive a written plan or blended extract with dosing instructions.

Step 4

You apply on schedule and adjust with our guidance as the season moves.

Recorded Practice

20–400m²

Typical plot sizes we work with

5 days

Turnaround on sampling results

Osaka Bay

Coastal region of collection

Our Offers

Soil and leaf sampling consultation

Soil and Leaf Sampling Consultation

A structured visit to see what your beds actually need before anything is applied.

Learn More →
Seasonal feeding plan for vegetable beds

Seasonal Feeding Plan

A written schedule built around your rotation, climate, and sampling results.

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Seaweed extract blending for tomato and fruiting crops

Seaweed Extract Blending

Liquid extract adjusted for fruiting crops like tomato, pepper, and cucumber.

Learn More →

Have a Bed That Needs a Closer Look?

Tell us about your plot and we'll suggest where to start — sampling, a feeding plan, or a blended extract, whichever fits what you're growing.

Start the Conversation

Get in Touch

Send a short note about your plot and we'll write back with next steps.

Company Record

Legal Entity: Kelp Core Lab

Address: 2-10-31 Chuo, Joto-ku, Osaka 536-0005

Phone: +81 6 6933 3757

Email: info@kelp-corelab.com

Domain: kelp-corelab.com