• Skip to primary navigation
  • Skip to main content
  • Skip to footer

Organic Seed Alliance

Putting the power of seed into the hands of growers

  • News
  • Programs
    • Education
      • 2026 Organic Seed Production Online Course
      • 2026 On-Farm Plant Breeding for Resilient Organic Systems | Online Course
    • Research
      • The OSPREY Project
    • Advocacy
    • Outreach
  • Publications
    • Recent Publications
    • How-to Guides
    • Reports
    • Webinars
    • Worksheets & Record-keeping
    • Conference Proceedings
    • All Publications
  • Resources
    • Courses
      • Organic Seed Production
      • On-Farm Plant Breeding for Resilient Organic Systems
      • Asynchronous Organic Seed Production
      • Midwest Organic Seed Production
    • Online Toolkits
      • Variety Trial Tool
      • Seed Economics Toolkit
      • Seed Cleaning Toolkit
    • Organic Seed Producers & Farm Directory
    • Seed Policy Platform
    • State of Organic Seed
    • Organic Seed Commons
    • Intellectual Property Rights on Seed
    • OSA’s YouTube Channel
  • Events
    • Upcoming Events
    • Open House Quarterly Call Series
    • Organic Seed Growers Conference
  • About
    • About OSA
    • Impact
    • Staff & Board
      • Employment Opportunities
    • Press & Media
    • Seed FAQ
    • Contact Us
  • Give

Crop: Tomatoes

July 23, 2018

Tomato Seed Production: Quick Reference


Tomato Seed Production Tomato plant spacing is affected by the growth habit of the variety. The three main growth habits …

Continue Reading

Resources · March 13, 2018

Webinar: How to Manage Tomato Diseases Organically


Join the Tomato Organic Management and Improvement (TOMI) project and eOrganic for a webinar on managing foliar pathogens organically on …

Continue Reading

Events · January 16, 2018

Learn How to Grow Your Own Tomato Seed


Tomatoes are one of the most popular fresh market vegetables, with a rich assortment of varieties that vary in appearance, flavor, and …

Continue Reading

December 18, 2017

Organic Tomato Foliar Pathogen IPM Webinar

March 21, 2018
2:00 P.M. EASTERN, 1:00 P.M. CENTRAL, 12:00 P.M. MOUNTAIN, 11:00 A.M. PACIFIC | EORGANIC WEBINAR

Join the Tomato Organic Management and Improvement (TOMI) project and eOrganic for this webinar on how to manage foliar pathogens …

Continue Reading

December 18, 2017

Organic Tomato Seed Production Webinar

January 30, 2018
2:00 p.m. Eastern, 1:00 p.m. Central, 12:00 p.m. Mountain, 11:00 a.m. Pacific | eOrganic Webinar

Join the Tomato Organic Management and Improvement (TOMI) project and eOrganic for this webinar on growing your own organic tomato …

Continue Reading

Events · September 8, 2017

3rd Annual Tomato Taste-Off!


The August heat delivered an exceptional tomato season this year in Jefferson County, Washington, home of our research farm. Last weekend …

Continue Reading

Events · September 7, 2017

Seed to Kitchen Event Highlights Organic Breeding


Farmers, plant breeders, seed companies, and other agriculturalists gathered last week in Madison for a tour of field trials hosted by the …

Continue Reading

Events · August 23, 2017

Evaluating the Fruits of our Labor


Farmers, researchers, and chefs gathered this week to learn about seed saving and plant breeding as part of a Purdue University field tour …

Continue Reading

Events · June 14, 2017

Join Us: Organic Seed Training in Indiana


Join OSA's Micaela Colley and our partners from the Carrot Improvement for Organic Agriculture (CIOA) and Tomato Organic Management and …

Continue Reading

Field Notes · May 4, 2017

Spring Days at the OSA Research Farm


Here at the OSA research farm in Chimacum, Washington, the days are getting longer, the soil is slowly drying out, greenhouse starts are …

Continue Reading

California


California leads the nation in vegetable seed production, yet less than half of the vegetable seed planted on organic farms in the state is …

Continue Reading

Pacific Northwest


The Pacific Northwest has some of the best seed producing areas in the world. For example, Brassica vegetable seed crops produced in …

Continue Reading

« Previous Page
Next Page »

Footer

Seed Alliance logo

Putting the power of seed into the hands of growers

  • Email
  • Facebook
  • Instagram
  • LinkedIn
  • YouTube
Subscribe to Our Newsletter

Copyright © 2026 Organic Seed Alliance · All Rights Reserved · Website by Tomatillo Design

Putting the power of seed into the hands of growers

PO Box 772
Port Townsend, WA 98368

  • Facebook
  • Instagram
  • LinkedIn
  • YouTube

About
About OSA
Staff & Board
Impact
Careers
Contact Us

Programs
Research
Education
Advocacy
Outreach

Organic Seed Commons
State of Organic Seed

Get Involved
Advocate
Donate
Participate

Subscribe

Organic Seed Alliance is a 501(c)(3) nonprofit organization. EIN 51-0175667.

© 2026 Organic Seed Alliance. All Rights Reserved.

Privacy Policy

Charitable Disclosure

OSGC Request for Proposals are LIVE!

In 2027, Organic Seed Growers Conference will have separate In-person (March 26th & 27th) and Virtual (March 30th & 31st) components, providing an interactive agenda of workshops, demonstrations, farm tours, lightning talks, art, seed swaps, affinity spaces, keynote presentations, and of course – celebration!

RFP due July 15th, 2026
Submit a proposal