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Oenothera serrulata |
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| Synonym(s) |
Calylophus serrulatus |
| Common name |
shrubby evening primrose; toothed yellow sundrops |
| Family |
onagraceae |
| Life cycle |
perennial (Z3-9)  |
| Flowers |
yellow (spring-summer) |
| Size |
6-18" |
| Light |
sun |
| Cultural notes |
well-drained soil; drought-tolerant |
Woody-based perennial from the American prairies with cheerful yellow flowers that stay open all day. Its taproot makes this species difficult to transplant.
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This plant used to grow in our garden, but it slipped away... About my plant portraits
PlantLinks to other web pages about Oenothera serrulata
- Seed from NARGS '23/'24 exchange. Baggy 70F (13%G, 7-22d) - 70F with light (7%G, 2d)
Online sources suggest stratification or exposure to fluctuating temperatures is helpful for germination. My seeds were simply stored dry&cold for 9 months, then attempted germination at room temperature.
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Last modified:
January 05, 2025
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