Castro Valley Library & ForestR.org Seed Sharing Library
Castro Valley, Alameda County, California
Hosted by Alameda County Library
Where to find it: Castro Valley Library (Alameda County Library)
Location
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37.692688, -122.071106
What the listing says
- Seed donations
- Accepted
- Bringing seed back
- Encouraged, not required
- How much you can take
- “Up to 5 varieties”
Not listed: Library card · Reserve online · Browsing · Season – ask the library.
Listing last checked against the library's own page: September 2026
Rules can change by season. Check with the library before you go.
Seed libraries nearby
- Danville Seed Library Danville ≈ 9.7 mi
- Moraga Seed Library Moraga ≈ 10.6 mi
- Foster City Library Seed & Seedling Library Foster City ≈ 14.3 mi
Straight-line distance from Castro Valley Library & ForestR.org Seed Sharing Library.
Nearby counties
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Listings updated November 2026