Propagation Protocol Sources - Anne Klingensmith 2026

The first two are ones I always consult, but the second two are interesting, #3 very scientific, and #4 very anecdotal but practical.

1) Norman Deno. Seed Germination Theory and Practice 2nd edition, plus useful info in 1st edition and the Supplement to the 2nd Edition.  Notes whether dry storage is tolerated, whether starting at cool temps or warm temps makes a difference, if multiple cycles of cold and warm are necessary.  The introductory chapters have lots of great information about germination schemes that plants use.
Free pdf download here: https://www.gardenmyths.com/seed-germination-dr-deno/

2) Tom Clothier: separate databases with specific info on Perennials/ Annual Biennials/ Penstemon/ Trees and Shrubs: https://tomclothier.hort.net/

3)Native Plant Network propagation database: takes a little digging: https://rngr.net/npn/propagation/protocols/
"Establishing in 2001, the goal of the Native Plant Network is to provide technical and practical information on the growing and planting of North American ... native plants for restoration, conservation, reforestation, landscaping, roadsides, and so on. The Network includes the Native Plants Journal and the Propagation Protocol Database."

4) Botany CA:  info on native and hard to germinate species: https://botanicallyinclined.org/germination-page/

Editorial Note: My first reference for native plant propagation is always the William Cullina triad. But if you cannot find a copy, at least the above references are available wherever the internet can be accessed. Another great source is Prairie Moon Nursery https://www.prairiemoon.com/
[Rosemarie Parker]

1. Cullina, William, Wildflowers: A Guide to Growing and Propagating Native Flowers of North America (The New England Wild Flower Society), Houghton Mifflin Harcourt, 2000
2. Cullina, William, Native Trees, Shrubs, and Vines: A Guide to Using, Growing, and Propagating North American Woody Plants, Houghton Mifflin Harcourt, 2002
3. Cullina, William, Native Ferns, Moss, and Grasses: From Emerald Carpet to Amber Wave, Serene and Sensuous Plants for the Garden, Houghton Mifflin Harcourt, 2008