A guide to requesting seed samples from the CalBG Seed Conservation Program
The Seed Conservation Program at CalBG can distribute small samples of our seed collections to botanic gardens, as well as conservation, research and educational institutions. Seeds from this collection cannot be distributed to private individuals. Native wildflower seeds are offered to the public through sales at the Grow Native Nursery.



Review the Convention on Biological Diversity, the Seed Distribution and Invasive Exotic Plants, and the Importing Seed Outside the United States at the bottom of this page to ensure that your request for seeds will comply with CalBG’s terms for the distribution of seeds.


Review the Seed List (link below) for an inventory of available seed collections. Refer to the “Codes” tab on the spreadsheet for column descriptions. Pay close attention to the STATUS column and the QTY column, as these columns most affect the availability of the seed collections.


Download and fill out a Seed Request Form (link below) with information on the requested seed samples. The first eight columns of the Seed List can be copied and pasted into the Seed Request Form. We charge a base rate of $30.00 US for each seed request, plus an additional $10.00 US per sample. Each sample contains between 25 - 200 seeds from a single accession. Fill out the “# Seeds Requested” column to indicate how many seeds you would like to request, but please note that a maximum of 10% of a seed collection can be distributed and the final quantity will be determined by the Seed Conservation Program Manager.


Email the completed form to Cheryl Birker at You will receive a confirmation email before you are charged for the seed request. Orders will be filled on a first-come, first-served basis. Due to limited quantities or prior requests, we may not be able to fill all requests.

seed request documents

seed list

seed request form

germination data


Convention on Biological Diversity
In response to the Convention on Biological Diversity, the Garden supplies the seed requested on condition that:

- They are used for the common good in areas of research, trials, breeding, education and conservation.

-If the recipient seeks to commercialize the genetic material, its products or research derived from it, then written permission must be obtained from the California Botanic Garden.

-The genetic material, its products or research derived from it are not to be passed on to a third party for commercialization without written
permission from the California Botanic Garden.

Seed Distribution and Invasive Exotic Plants
California Botanic Garden is concerned about the serious impact that alien plant introductions can have on local native plant populations. It is assumed by this institution that the receiving institution or individual will not order seeds of species that might escape from their garden and become invasive weeds or through their introduction, genetically pollute local native plant populations.

Importing Seed Outside the United States
It is the goal of this institution to abide by all government restrictions regulating the import and export of seed. It is assumed that the receiving institution, in placing an order, is in compliance of any local regulations. Organizations and individuals should therefore contact the Agricultural or Plant Health authorities in their country to check on any restrictions before ordering seed.

The Garden requests copies of any publication produced with reference to this collection, as well as acknowledgment in any such publication. The Garden would appreciate receiving any germination data obtained on seeds from our collection. In addition, any error in identification should be brought to our attention. This will help us monitor and maintain the highest standards in our Seed Storage and Index Seminum Program.

contact us

cheryl BIRKER