Humico - Brown Seaweed Extract Manufacturer in China

Humico has been manufacturing Brown Seaweed Extract for 10+ years.
Supplying HumxSea Osmos (brown seaweed extract powder) with 40% total content of Alginic Acid & Seaweed Oligosaccharide.
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HumxSea Osmos (Brown Seaweed Extract)

HumxSea Osmos (Brown Seaweed Extract) is a 100% organic, water – soluble plant biostimulant made from brown algae. Our factory adopts cold – processing technology to fully preserve its natural bioactivity.
Humico Brown Seaweed Extract contains various trace minerals and growth – promoting substances. It can strengthen crop roots, increase harvest yields, and enhance resistance to environmental stress. You can use it for the healthy growth of crops from soil care to harvest time.

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Humico HumxSea Osmos (Brown Seaweed Extract Powder)

Brown Seaweed Extract Powder

Alginic Acid & Seaweed Oligosaccharide: ≥40%
Organic Matter: ≥40%
Mannitol: ≥5%
Betaine: ≥5%
pH: 6–8

Appearance: Yellow Powder
Oligosaccharide: ≥90%
pH: 6–7.5
Water-Solubility: 100%

Appearance: Brown Liquid
Oligosaccharide: 100~220g/L
pH: 5–8
Water-Solubility: 100%

Brown Seaweed Extract Powder Specification & ingredients

Alginic Acid & Seaweed Oligosaccharide ≥40%
Organic Matter ≥40%
Mannitol ≥5%
Betaine ≥5%
N ≥1%
K2O ≥16%
pH 6–8
Water Solubility 100%

100% Natural & Organic

Humico Brown Seaweed Extract is OMRI-listed and sourced from fresh, wild-harvested brown kelp (primarily Ascophyllum Nodosum).
Our HumXSea Osmos process utilizes specialized cold-extraction technology – preserving the maximum bioactive power and natural hormones of the seaweed.

Humico OMRI - Seaweed Extract - China Organic Fertilizer & Animal Feed Manufacturer 1 Mar 2026

Humico Brown Seaweed Extract Benefits

1. Plant Growth
Humico brown seaweed extract is rich in primary nutrients like Nitrogen, Phosphorus (P2O5), and Potassium (K2O) from natural kelp and brown seaweed. It can promote vigorous plant growth from seedlings to maturity and ensure plants develop robust stems and lush foliage.

2. Deep Root Growth
Alginic Acid and Laminarin in our HumxSea Osmos can enhance root branching and absorption capacity.

3. Nutrient Uptake
Our brown seaweed algae extract can improve nutrient uptake with the content of macro and micronutrients (Calcium, Magnesium, Iron, Boron) and organic compounds like Mannitol and Fucoidan. These bioactive substances can help plants absorb nutrients efficiently and reduce leaching losses.

4. Stress Tolerance
Plants can gain better stress tolerance from natural compounds such as Betaines, Polyamines, and Phlorotannins found in brown seaweed and marine algae. And these molecules can help crops withstand drought, temperature extremes, and salinity under adverse conditions.

5. Enhanced Plant Health
Amino acids, vitamins (B1, B12, C, E), and natural enzymes present in HumxSea Osmos (brown seaweed extract). These nutrients can support protein synthesis, antioxidant activity, and overall metabolic function, keeping plants vigorous and disease-resistant.

6. Soil Microbial Activity
Organic matter like seaweed oligosaccharide, laminarin, and alginates in our brown algae extract can enrich the soil, promote soil microbial activity. Healthy microbial populations from marine bio-active substances can improve nutrient cycling, soil structure, and root-microbe interactions.

7. Flower Development Enhanced
Plant hormones like Auxins, Cytokinins, and Gibberellins in organic brown seaweed extract, combined with trace elements such as Boron and Molybdenum, they can help plants produce more blooms, leading to better fruit set.

8. Fruit Development
Our seaweed extract from brown algae can support fruit development with organic carbon, amino acids, and vitamins. And it can ensure proper cell division, sugar accumulation and promote size, color, and uniformity in fruits.

9. Higher yield
Primary and secondary nutrients, seaweed-specific organic compounds, our extracts from kelp and brown algae optimize photosynthesis, flowering, and fruiting, resulting in more productive crops.

10. Improved Crop Quality
The compounds of Phlorotannins, natural enzymes, vitamins, and amino acids in our brown algae extract are derived can enhance taste, nutritional value, texture, and shelf-life of fruits and vegetables.

Humico Brown Algae Extract Uses & Applications

Humico Avocado

Avocado

Humico Strawberry

Strawberry

Humico Cantaloupe

Cantaloupe

Humico Citrus

Citrus

Humico Durian

Durian

Humico Pawpaw

Pawpaw

Humico Pitaya

Pitaya

Humico Tomatoes

Tomatoes

Humico Apricots

Apricots

Humico Cherry

Cherry

Humico Bayberry

Bayberry

Humico Watermelon

Watermelon

Humico Banana

Banana

Humico Grapes

Grapes

Humico Guava

Guava

Humico Apples

Apples

Humico Lemon

Lemon

Humico Grapefruit

Grapefruit

1. Target Plant Types
Our natural extract from brown algae is suitable for a vast range of plants and supports healthy development during all growth stages, from seedling to fruiting.
It is highly effective for edible crops such as vegetables (e.g., tomatoes, peppers, cucumbers, zucchini, broccoli, and leafy greens) and fruit trees/berry plants (e.g., strawberries, blueberries, grapes, citrus trees, and apple trees).
For ornamental purposes, it benefits flowers (e.g., roses, lilies, and orchids such as Phalaenopsis), turfgrass, shrubs and trees (e.g., azaleas, rhododendrons), and is excellent for potted plants, including indoor houseplants (e.g., spider plants, pothos, and peace lilies) and specialized bonsai.

2. Application Methods
Humico brown seaweed extract offers versatile application methods to suit various gardening and farming practices. It can be applied directly as a foliar spray or used as a soil drench.
For larger-scale or automated systems, it is fully compatible with irrigation and fertigation systems, including drip and sprinkler setups.
Additionally, it is effective for seed treatment or soaking to promote vigorous germination and early seedling growth.

3. Growing Systems & Contexts
HumxSea Osmos (Brown Seaweed Extract) can be used into diverse growing systems and agricultural contexts. It is equally effective in soil-based gardens, container and potting mixes, and soilless cultivation systems such as hydroponics.

4. Product Compatibility
Our brown seaweed extract can be compatibility with other fertilizers. It can be safely mixed with many common organic or synthetic fertilizers to create enhanced formulations.

Brown Seaweed Extract
MSDS/TDS

MSDS.pdf

HumxSea Osmos (Brown Seaweed Extract)

TDS.pdf

HumxSea Osmos (Brown Seaweed Extract)

HumxSea Osmos (Brown Seaweed Extract) Documents

OMRI, ISO 9001, COA, CO, Form E, and other original certification documents

HumxSea Osmos (Brown Seaweed Extract) Certificates

Humico HumxSea Osmos (Brown Seaweed Extract) is manufactured under the highest international benchmarks for modern agriculture.
OMRI Listed: Fully compliant with USDA/NOP standards for certified organic farming worldwide.
ISO 9001:2015 Certified: Our production is governed by a rigorous Quality Management System, guaranteeing batch-to-batch consistency and total traceability.
At Humico, we bridge the gap between nature and technology, providing global distributors and growers with sustainable, organic brown seaweed extract powder fertilizer.

Package of HumxSea Osmos

Standard Sizes: 1kg, 2kg, 5kg, 10kg, 20kg, 25kg bags or 1L, 5L, 10L, 20L, 100L, 1000L Tank
OEM & Private Label Services — with your logo, language, and brand design
Strong, Moisture-Proof Bags — to protect your product quality during shipping and storage
Flexible Shipping — Support for pallets, mixed containers, or direct delivery to port
Humico offers a wide range of customizable packaging options to fit your market needs — from small retail packs to large bulk orders.
Whether you’re a distributor, fertilizer manufacturer, or agricultural supplier, HUMICO makes it easy to pack, sell, and ship.

Humico Exhibitions

At HUMICO, we actively participate in the world’s leading agriculture and feed industry exhibitions.
• CAC 2025 – 25th China International Agrochemical & Crop Protection Exhibition
• Sugarex Thailand 2024 & Agri Expo Thailand 2024
• Viv Select China 2024
• CAC 2024 – 24th China Agrochemical & Crop Protection Exhibition

Ultimate FAQ Guide to
Brown Seaweed Extract

Brown seaweed extract is used as a natural plant biostimulant to promote plant growth, root development, nutrient uptake, stress tolerance, flowering, fruiting, and overall crop health and yield.

Yes, absolutely. Brown seaweed is rich in nutrients, plant growth hormones, vitamins, and trace elements. The brown seaweed extracts can promote root development, improves nutrient uptake, enhances soil structure, and helps plants resist environmental stress. It is suitable for vegetables, fruits, flowers, lawns, and hydroponic systems.

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