🐝 Bee Forage Bloom Calendar for Portland, OR (97201)

What's flowering for honey bees near Portland, OR (Willamette Valley), month by month — 35 local nectar and pollen sources.

Open the interactive, printable calendar →

Named honey flows

Spring Maple/Willow Buildup Flow (minor): Mar–Apr
Blackberry Flow (major): Jun–Jul
Clover & Meadow Flow (major): May–Aug
Fall Goldenrod/Aster Flow (minor): Aug–Oct

Bloom timing by plant

Plant	Scientific name	Category	Bloom months	Forage value
Filbert (Hazelnut)	Corylus avellana	Trees	Jan–Feb	low
Red Alder	Alnus rubra	Trees	Feb–Mar	medium
Willow (Pussy Willow/Scouler)	Salix scouleriana	Trees	Feb–Apr	high
Sweet Cherry	Prunus avium	Trees	Mar–Apr	medium
Red-flowering Currant	Ribes sanguineum	Shrubs & Vines	Mar–Apr	medium
Oregon Grape	Mahonia aquifolium	Shrubs & Vines	Mar–Apr	medium
Salmonberry	Rubus spectabilis	Shrubs & Vines	Mar–May	medium
Dandelion	Taraxacum officinale	Wildflowers & Weeds	Mar–May	high
Bigleaf Maple	Acer macrophyllum	Trees	Apr–May	high
Domestic Apple	Malus domestica	Trees	Apr	medium
Oregon White Oak	Quercus garryana	Trees	Apr–May	low
Douglas Fir	Pseudotsuga menziesii	Trees	Apr–May	low
Vine Maple	Acer circinatum	Shrubs & Vines	Apr–May	low
Black Locust	Robinia pseudoacacia	Trees	May	high
Trailing Blackberry	Rubus ursinus	Shrubs & Vines	May–Jun	medium
Wild Rose	Rosa nutkana	Shrubs & Vines	May–Jun	low
White Dutch Clover	Trifolium repens	Clover & Legumes	May–Sep	high
Crimson Clover	Trifolium incarnatum	Clover & Legumes	May–Jun	medium
Vetch	Vicia sativa	Clover & Legumes	May–Jul	medium
Big Leaf Lupine	Lupinus polyphyllus	Clover & Legumes	May–Jul	low
American Basswood	Tilia americana	Trees	Jun–Jul	high
Himalayan Blackberry	Rubus armeniacus	Shrubs & Vines	Jun–Jul	high
Snowberry	Symphoricarpos albus	Shrubs & Vines	Jun–Jul	medium
Red Clover	Trifolium pratense	Clover & Legumes	Jun–Aug	medium
Birdsfoot Trefoil	Lotus corniculatus	Clover & Legumes	Jun–Aug	medium
Canada Thistle	Cirsium arvense	Wildflowers & Weeds	Jun–Aug	medium
Self-heal	Prunella vulgaris	Wildflowers & Weeds	Jun–Aug	low
Phacelia (Lacy Phacelia)	Phacelia tanacetifolia	Wildflowers & Weeds	Jun–Jul	high
Common Fireweed	Chamaenerion angustifolium	Wildflowers & Weeds	Jul–Sep	high
Himalayan Balsam	Impatiens glandulifera	Wildflowers & Weeds	Jul–Sep	medium
Common Tansy	Tanacetum vulgare	Wildflowers & Weeds	Jul–Sep	low
Yellow Star Thistle	Centaurea solstitialis	Wildflowers & Weeds	Jul–Sep	medium
Canada Goldenrod	Solidago canadensis	Wildflowers & Weeds	Aug–Oct	high
Douglas Aster	Symphyotrichum subspicatum	Wildflowers & Weeds	Aug–Oct	high
English Ivy	Hedera helix	Shrubs & Vines	Sep–Oct	medium