What's flowering for honey bees near Greeley, CO (Colorado Piedmont / South Platte River Valley (High Plains-Front Range transition, ~4,700 ft)), month by month — 34 local nectar and pollen sources.
Open the interactive, printable calendar →← More Colorado bee forage calendars
| Plant | Scientific name | Category | Bloom months | Forage value |
|---|---|---|---|---|
| Siberian Elm | Ulmus pumila | Trees | Mar | medium |
| Silver Maple | Acer saccharinum | Trees | Mar–Apr | medium |
| Plains Cottonwood | Populus deltoides | Trees | Mar–Apr | low |
| Peach | Prunus persica | Trees | Apr | medium |
| Apple/Crabapple | Malus domestica / Malus spp. | Trees | Apr–May | medium |
| Golden Currant | Ribes aureum | Shrubs & Vines | Apr–May | medium |
| American Plum | Prunus americana | Shrubs & Vines | Apr–May | medium |
| Skunkbush Sumac | Rhus trilobata | Shrubs & Vines | Apr–May | low |
| Common Dandelion | Taraxacum officinale | Wildflowers & Weeds | Apr–May | medium |
| Black Locust | Robinia pseudoacacia | Trees | May | high |
| Russian Olive | Elaeagnus angustifolia | Trees | May–Jun | high |
| Chokecherry | Prunus virginiana | Shrubs & Vines | May | medium |
| Virginia Creeper | Parthenocissus quinquefolia | Shrubs & Vines | Jun–Jul | low |
| Wild Grape | Vitis riparia | Shrubs & Vines | Jun | low |
| White Sweetclover | Melilotus albus | Clover & Legumes | Jun–Sep | high |
| Yellow Sweetclover | Melilotus officinalis | Clover & Legumes | Jun–Aug | high |
| Alfalfa | Medicago sativa | Clover & Legumes | Jun–Sep | high |
| White Dutch Clover | Trifolium repens | Clover & Legumes | Jun–Aug | medium |
| Red Clover | Trifolium pratense | Clover & Legumes | Jun–Aug | low |
| Purple Prairie Clover | Dalea purpurea | Clover & Legumes | Jun–Aug | medium |
| Field Bindweed | Convolvulus arvensis | Wildflowers & Weeds | Jun–Sep | medium |
| Cutleaf Nightshade / Silverleaf Nightshade | Solanum elaeagnifolium | Wildflowers & Weeds | Jun–Aug | low |
| Prickly Poppy | Argemone polyanthemos | Wildflowers & Weeds | Jun–Aug | low |
| Canada Thistle | Cirsium arvense | Wildflowers & Weeds | Jun–Aug | medium |
| Musk Thistle | Carduus nutans | Wildflowers & Weeds | Jun–Jul | medium |
| Cucumber/Squash (cucurbits) | Cucurbita pepo | Wildflowers & Weeds | Jun–Aug | low |
| Showy Milkweed | Asclepias speciosa | Wildflowers & Weeds | Jun–Jul | medium |
| Sunflower (annual) | Helianthus annuus | Wildflowers & Weeds | Jul–Sep | medium |
| Curlycup Gumweed | Grindelia squarrosa | Wildflowers & Weeds | Jul–Sep | medium |
| Rabbitbrush | Ericameria nauseosa | Shrubs & Vines | Aug–Sep | high |
| Kochia | Bassia scoparia | Wildflowers & Weeds | Aug–Sep | medium |
| Canada Goldenrod | Solidago canadensis | Wildflowers & Weeds | Aug–Sep | high |
| Heath Aster | Symphyotrichum ericoides | Wildflowers & Weeds | Sep–Oct | high |
| Smooth Blue Aster | Symphyotrichum laeve | Wildflowers & Weeds | Sep–Oct | medium |
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.