What's flowering for honey bees near Fremont, CA (San Francisco Bay Area / Santa Clara Valley (East Bay, Fremont-Niles area), Mediterranean climate, Diablo Range foothills to bay flats), month by month — 36 local nectar and pollen sources.
Open the interactive, printable calendar →← More California bee forage calendars
| Plant | Scientific name | Category | Bloom months | Forage value |
|---|---|---|---|---|
| Coast Redwood (pollen only, wind) | Sequoia sempervirens | Trees | Jan–Feb | low |
| Rosemary | Salvia rosmarinus | Shrubs & Vines | Jan–Apr | medium |
| Almond | Prunus dulcis | Trees | Feb–Mar | high |
| Plum / Cherry Plum | Prunus cerasifera | Trees | Feb–Mar | medium |
| Willow (Arroyo/Sandbar) | Salix lasiolepis | Trees | Feb–Mar | high |
| Black Mustard | Brassica nigra | Wildflowers & Weeds | Feb–Apr | high |
| Wild Radish | Raphanus sativus | Wildflowers & Weeds | Feb–May | medium |
| Filaree / Storksbill | Erodium cicutarium | Wildflowers & Weeds | Feb–Apr | low |
| Coast Live Oak | Quercus agrifolia | Trees | Mar–Apr | low |
| California Lilac (Ceanothus) | Ceanothus spp. | Shrubs & Vines | Mar–Apr | high |
| Crimson Clover | Trifolium incarnatum | Clover & Legumes | Mar–May | medium |
| Bur Clover | Medicago polymorpha | Clover & Legumes | Mar–May | medium |
| Bush Lupine | Lupinus albifrons | Clover & Legumes | Mar–May | medium |
| Vetch | Vicia villosa | Clover & Legumes | Mar–May | medium |
| California Poppy | Eschscholzia californica | Wildflowers & Weeds | Mar–May | medium |
| Fiddleneck | Amsinckia intermedia | Wildflowers & Weeds | Mar–May | medium |
| Black Locust | Robinia pseudoacacia | Trees | Apr–May | medium |
| Blue Elderberry | Sambucus nigra ssp. caerulea | Shrubs & Vines | Apr–Jun | medium |
| Pride of Madeira | Echium candicans | Shrubs & Vines | Apr–Jun | medium |
| White Clover | Trifolium repens | Clover & Legumes | Apr–Jul | high |
| Bristly Ox-tongue | Helminthotheca echioides | Wildflowers & Weeds | Apr–Sep | low |
| California Buckeye | Aesculus californica | Trees | May–Jun | low |
| California Buckwheat | Eriogonum fasciculatum | Shrubs & Vines | May–Sep | high |
| Himalayan Blackberry | Rubus armeniacus | Shrubs & Vines | May–Jul | high |
| Lavender | Lavandula spp. | Shrubs & Vines | May–Aug | medium |
| Red-flowering Gum | Corymbia ficifolia | Trees | Jun–Sep | medium |
| Toyon | Heteromeles arbutifolia | Shrubs & Vines | Jun–Jul | medium |
| Cape Honeysuckle / ornamental vines | Tecoma capensis | Shrubs & Vines | Jun–Oct | low |
| Common Sunflower | Helianthus annuus | Wildflowers & Weeds | Jun–Sep | medium |
| Yellow Star Thistle | Centaurea solstitialis | Wildflowers & Weeds | Jun–Sep | high |
| Telegraph Weed | Heterotheca grandiflora | Wildflowers & Weeds | Jul–Oct | medium |
| Tarweed | Holocarpha virgata | Wildflowers & Weeds | Jul–Sep | medium |
| Goldenrod | Solidago californica | Wildflowers & Weeds | Aug–Oct | high |
| California Aster | Symphyotrichum chilense | Wildflowers & Weeds | Aug–Oct | high |
| Coyote Brush | Baccharis pilularis | Shrubs & Vines | Sep–Nov | high |
| Blue Gum Eucalyptus | Eucalyptus globulus | Trees | Nov–Mar | high |
A bee forage bloom calendar shows which nectar and pollen plants are blooming in a given area, month by month, so beekeepers can plan colony buildup, splits, and honey harvests around the local bloom.
Every calendar starts with your zip code's specific growing region — its climate, elevation, and local ecology. From there, we use AI trained on horticultural and beekeeping knowledge to work out which nectar and pollen plants actually grow there and when they typically bloom, the same kind of judgment call an experienced local beekeeping mentor or extension agent would make, just automated so any US zip code can get a calendar in minutes instead of years of local observation. Each calendar typically covers 25-40 plants across trees, shrubs and vines, clover and legumes, and wildflowers, plus the area's named honey flows. We keep the exact generation process under wraps, but the goal is always the same: real, locally-grounded bloom timing instead of generic national averages.
The region-specific bloom timing, honey flows, and beekeeping notes are produced by an AI system drawing on general horticultural, ecological, and beekeeping knowledge, applied to your area's specific climate and geography — rather than looked up from a single official bloom-timing database, since no such nationwide dataset exists at this level of local detail.
A nectar dearth (or dearth period) is a stretch of the year when little or no medium-to-high value forage is blooming. Colonies may need supplemental feeding during a dearth to avoid starvation or robbing behavior.
A honey flow (or nectar flow) is a period when nectar is abundant enough for a colony to produce surplus honey beyond what it needs to survive, often tied to a specific major regional bloom like clover or black locust.
Bloom timing is generated from regional climate and ecology data and is intended as a general planning reference. It may not perfectly match a specific microclimate, so it's worth cross-checking against your own field observations.
Yes. Enter any US zip code to get a free, printable bee forage bloom calendar — no signup required.