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Alder
Alnus spp.
In the United States:
Native
Honeybees forage on red alder primarily for its abundant pollen from male catkins in early spring, aiding colony buildup after winter; peak bloom occurs February to April depending on location; it thrives in moist soils and fixes nitrogen but can be susceptible to pests like alder aphids.
| Nectar | low |
|---|---|
| Pollen | high |
| Bloom (US) | February–April |
| Hardiness zones | 2-9 |
| Duration | ~2 weeks |
| Type | Perennial |
| Sun | partial |
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