Cottonwood Connections December 2025

Building and Sustaining Seed Libraries

Rebecca Newburn, Seed Library Network, Co-founder of Richmond Grows Seed Lending Library

Discover valuable resources from the Seed Library Network to help start and maintain seed libraries in your community. Learn about seed-saving courses that can be integrated into programs, strategies for engaging others in seed sharing, and best practices for vetting and managing donated seeds. This class will provide practical tools to enhance seed libraries and foster a deeper commitment to sustainability and seed stewardship.

Checking Your Seed Viability

• Most seeds remain viable for about 3 years when stored in a cool, dark, dry place.

• Exceptions: members of the carrot family (carrots, parsley, dill) are short-lived and usually good

for only 1–2 years.

How to test seed viability:

1. Place 10 seeds on a paper towel moistened with warm water.

2. Cover with another moistened towel, roll it up, and place in a plastic bag with

small holes.

3. Keep the bag in a warm spot (like on top of the fridge). Re-moisten if needed.

4. After one week, check for germination. Remove sprouted seeds.

5. Check again after another week.

The percentage of seeds that sprout = your germination rate. Use this to decide whether to plant or purchase new seed.

Poinsettia Care

Modern poinsettia varieties hold their beauty for a long time with proper care:

• Place in bright light, but avoid cold window panes or drafty areas.

• Day temperature: 65–75°F; night temperature: 60–65°F.

o Above 75°F → shortens bloom life.

o Below 60°F → may cause root rot.

• Avoid saturated soil. Overwatering leads to root issues, while underwatering causes leaf drop.

• Check soil daily:

o Finger test (½ inch deep) or moisture meter (ideal level: 3–4).

• Water with lukewarm water, let the plant drain completely, then return it to its saucer or foil wrap.

Cottonwood Connections December 2025 | Page 8