Who produces seaweed seed in California

Bull Kelp Gametophyte Bank — Alberto Lab / California Sea Grant

California North Coast collection sites; lab in Wisconsin

A conservation gametophyte bank holding cultured bull kelp lines from California North Coast populations.

• Bull kelp

Cal Poly Humboldt — Fisheries Biology / ProvidenSea

Arcata and Humboldt Bay

University hatchery running bull kelp and winged kelp gametophyte culture, seeded twine trials, and the CLASH bioreactor.

• Bull kelp
• Winged kelp

Jamestown S'Klallam Tribe — kelp spore preservation

Sequim, Washington

Washington tribal program preserving bull kelp spores for restoration; a useful comparator for California.

• Bull kelp

Monterey Bay Seaweeds

Marina, near Moss Landing

Land-based tank farm producing dulse, ogo, and sea lettuce as live product for chefs.

• Dulse
• Ogo
• Sea lettuce

Moss Landing Marine Laboratories — Aquaculture Facility

Moss Landing

Research hatchery advancing non-proprietary seaweed hatchery technology under the CLASH project.

• Sea lettuce
• Bull kelp

National Seaweed Nursery Directory

National, includes West Coast entries

The national cross-reference list of seaweed nurseries, updated annually by the National Seaweed Hub.

North Coast Kelp Recovery Consortium

Multiple North Coast sites

Multi-university restoration effort producing outplanting stock for North Coast kelp recovery.

• Bull kelp
• Giant kelp

Ocean Rainforest Inc.

Offshore Santa Barbara and Ventura; Goleta HQ

The only permitted commercial-scale giant kelp farm off California, producing its own outplant seed.

• Giant kelp

Sunken Seaweed

San Diego and Humboldt Bay

Commercial grower operating a kelp hatchery and nursery in Humboldt Bay alongside its San Diego operation.

• Bull kelp
• Sea lettuce

Tolowa Dee-ni' Nation — Kelp Guardians

Del Norte County

Tribal capacity-building program training members in bull kelp gametophyte culture for restoration.

• Bull kelp