1、Top 10 Companies in the Seaweed Fertiliser Industry (2026): Market

Seaweed fertilizers have emerged as a superior alternative to synthetic options due to their rich micronutrient content and natural biostimulant properties.

2、2026 Top 10 Foliar seaweed spray Manufacturers in China

Compatibility with Other Pesticides and Fertilizers: The foliar seaweed spray of Shandong Jufeng Biotechnology Co., Ltd. is compatible with many common pesticides and fertilizers.

3、Global Seaweed Fertilizer Market 2026 by Manufacturers, Regions, Type

According to our (Global Info Research) latest study, the global Seaweed Fertilizer market size was valued at USD 15 million in 2023 and is forecast to a readjusted size of USD 23 million by 2030 with a CAGR of 6.9% during review period.

Seaweed

The seaweed-based fertilizers market size was estimated at USD 15.4 billion in 2024 and is expected to grow at a CAGR of 5.6% between 2025 and 2034, driven by the increase in organic and sustainable agriculture.

Seaweed Fertiliser Market Outlook 2026

The processing and extraction of seaweed fertilizers involves specialized techniques that increase production expenses. Compared to synthetic alternatives, seaweed-based products can cost 35-50% more per acre, creating adoption barriers in developing agricultural markets.

Top 3 Manufacturers of Seaweed extract fertilizer in China

There are many companies who making seaweed extract fertilizer or liquid seaweed in China, these 3 which is very powerful enough and enjoys a good reputation in the industry.

Global Seaweed Extract Fertilizers Market 2026 by Manufacturers

This report delivers an in-depth analysis of the global Seaweed Extract Fertilizers market, and provides market size (US$ Million) and compound annual growth rate (CAGR%) for the forecast period (2022–2028), considering 2021 as the base year.

Seaweed Fertilizers Market Size, Share, and Industry Report 2032

The increasing adoption of seaweed fertilizers as a natural and sustainable solution for boosting crop productivity is a major driver propelling the global seaweed fertilizers market.

Seaweed Extract Fertilizer Top Manufacturers and Companies in the Industry

Manufacturers of seaweed extract fertilizer employ cutting-edge technology to extract active compounds without compromising the integrity of the final product. They often source their seaweed sustainably, ensuring that their operations do not harm marine ecosystems.

Global Seaweed Based Fertilizers Market 2026 by Manufacturers, Regions

Chapter 2, to profile the top manufacturers of Seaweed Based Fertilizers, with price, sales quantity, revenue, and global market share of Seaweed Based Fertilizers from 2020 to 2025.

Seaweed foliar fertilizer is a nutrient-providing product applied via foliar spraying, quickly absorbed by plants to enhance growth rates and crop yields. Several companies in the market specialize in producing seaweed foliar fertilizer. Below are some renowned manufacturers:

1. Haiday Biotech Co., Ltd.

   • Address: No. 20, Lanhai Road, Huangdao District, Qingdao, Shandong Province, China
   • Official Website: www.haidaybiotech.com
   • Overview: Haiday Biotech focuses on marine biotechnology research. Its seaweed foliar fertilizers use natural seaweed extracts rich in diverse nutrients, significantly improving crop disease resistance and growth.

2. Qingdao Green Source Biotech Co., Ltd.

   • Address: No. 66, Haier Road, Laoshan District, Qingdao, Shandong Province, China
   • Official Website: www.qingdaogreensource.com
   • Overview: Green Source Biotech specializes in marine bioresource utilization. Its products contain essential trace elements and vitamins, promoting robust root development and photosynthetic efficiency.

3. Shandong Ocean Food Co., Ltd.

   • Address: No. 27, Nanyuan Road, Jiaozhou City, Qingdao, Shandong Province, China
   • Official Website: www.shandongoceanfood.com
   • Overview: Integrating R&D, production, and sales of marine foods, this company’s seaweed fertilizers are rich in minerals and amino acids, enhancing crop quality and yield.

4. Qingdao Haiyi Biotech Co., Ltd.

   • Address: No. 159, Jinshui Road, Licang District, Qingdao, Shandong Province, China
   • Official Website: www.haiyibiotech.com
   • Overview: Haiyi Biotech specializes in seaweed resource development. Its products contain seaweed polysaccharides and alginic acid, boosting crop immunity and growth.

5. Qingdao Huatai Biotech Co., Ltd.

   • Address: Huanxiu Street, Jimo District, Qingdao, Shandong Province, China
   • Official Website: www.huataibiotech.com
   • Overview: Huatai Biotech focuses on biotechnology R&D. Its seaweed fertilizers include beneficial microorganisms, promoting root development and stress resistance in crops.

Each company’s products offer unique advantages: Haiday Biotech’s extracts, Green Source’s trace elements, Shandong Ocean Food’s minerals and amino acids, Haiyi’s polysaccharides and alginic acid, and Huatai’s microorganisms. When selecting seaweed foliar fertilizer, consider crop-specific needs, soil conditions, and follow recommended dosages for optimal results.