- Credited authors
- Smither-Kopperl, Margaret; Edwards, Annie; Kay-Cruz, Jessa.
- Organization
- USDA NRCS - Lockeford Plant Materials Center Lockeford, California
- Record year
- 2023
- Propagation method
- Seed
- Product type
- Container (plug)
- Seed origin
- northern California
- Stock type
- Container plugs (1”x 1” x 2”) and deep-pots (DPs, 1.5”x 1.5” x7”)
- Reported growing time
- Peak germination for all treatments occurred within 25-32 days after planting
Asclepias cordifolia (Heart-leaf milkweed, purple milkweed) — propagation references
Propagation method: Seed; Plant family: Asclepiadaceae. Find the plant identity and credited nursery records together. Follow the original protocol for the full method and its growing conditions.
Common nameHeart-leaf milkweed, purple milkweed
Record year2018
- Scientific name
- Asclepias cordifolia
- Common name
- Heart-leaf milkweed, purple milkweed
- Plant family
- Asclepiadaceae
Documented protocol references
Each entry describes a particular nursery record. Follow its source link for the complete growing procedure.
- Credited authors
- Riley, Lee E.; Klocke, Allison.
- Organization
- USDA FS - Dorena Genetic Resource Center Cottage Grove, Oregon
- Record year
- 2018
- Propagation method
- Seed
- Product type
- Container (plug)
- Seed origin
- Rogue River-Siskiyou National Forest, Oregon
- Stock type
- 262 ml (16 in3) container
- Reported growing time
- 16 weeks
Sources & dates
Source checked 2026-10-10. Source conditions and dates matter; this archive does not imply publisher endorsement.