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Birch
Betula spp.
In the United States:
Native
Honeybees forage on birch catkins for pollen in early spring, offering a vital protein boost for brood rearing when few other sources are available; peak bloom aligns with April to May in most ranges. No nectar is produced as trees are wind-pollinated. Susceptible to bronze birch borer in stressed or warmer conditions, requiring good site selection for longevity.
| Nectar | low |
|---|---|
| Pollen | medium |
| Bloom (US) | March–May |
| Hardiness zones | 2-9 |
| Duration | ~1 week |
| Type | Perennial |
| Sun | full |
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