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List of Honey Bee Forage Species within Region 2 for the State of OR

Ordered by Begin Bloom Month

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USDA codeFamilyLatin NameCommon NamePlant TypeBegin Bloom MonthEnd Bloom MonthSig
CORYLBetulaceaeCorylusFilbert, hazel, hazelnutSDB13N
ALNUSBetulaceaeAlnus Mill.AlderTDB16N
ARCTO3EricaceaeArctostaphylosManzanita, bearberryS25N
SALIXSalicaceaeSalixWillow, osierTDB28N
TAOFCAsteraceaeTaraxacumDandelion, blow-ballsF39N
BROLBrassicaceaeBrassica oleraceCabbageC47N
TRRE3FabaceaeTrifolium repensWhite, dutch cloverF49N
CEANORhamnaceaeCeanothusNewJersey tea, redroot, wild-lilac, buck-brushS48N
FRPU7RhamnaceaeRhamnus purshianaSagrada, bearberry, cascaraS46N
RUBUSRosaceaeRubusBlackberryS, C47N
RUBUSRosaceaeRubusBlackberryS, C47Y
VACCIEricaceaeVacciniumBlueberry, huckleberrySDB46N
PRAVRosaceaePrunusCherry (cultivated)TDB,C45N
ILEXAquifoliaceaeIlexHolly, yauponTEB45N
BRNABrassicaceaeBrassica rapa and napuscanolaC55N
MESAFabaceaeMedicago sativaAlfalfa, lucerneC510Y
MELILFabaceaeMelilotusSweet clover (white/yellow)F510N
SYMPHSymphoricarposSymphoricarposSnowberry, wolfberry, waxberry,F58N
TRIN3FabaceaeTrifolium incarnatumCrimson / Italian cloverF56N
TRIN3FabaceaeTrifolium incarnatumCrimson / Italian cloverF56Y
TRPR2FabaceaeTrifolium pratenseRed cloverF58N
VICIAFabaceaeViciaVetch, tareF58Y
VAMAEricaceaeVaccinium macrocarponCranberryS, C56N
ROPSFabaceaeRobinia pseudoacaciaBlack locust, false acacia, yellow locustTDB57N
CUCURCucurbitaceaeCucurbita L.Pumpkin, squash, gourdC69N
CUSA4CucurbitaceaeCucumis sativuscucumberC68N
CENTAAsteraceaeCentaureaStar thistle, knapweedF610Y
CHANA2OnagraceaeEpilobium angustifoliumFireweed, willow herb, wickupF68Y
FAES2PolygonaceaeFagopyrum esculentumBuckwheat, brankF, C68N
MENTHLamiaceaeMenthaMintF, C610N
SALVILamiaceaeSalviaSage, romonaF, C67N
ZEMAM2PoaceaeZea maysCorn, maizeC78N

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Plant Type codes:

Sig column

      T    - tree
    TDB - tree, deciduous broadleaf
    TEN - tree, evergreen needleleaf
    TEB - tree, evergreen broadleaf
      S    - shrub
    SEB - shrub, evergreen broadleaf
    SDB - shrub, deciduous broadleaf
      V    - vine
    VDB - vine, deciduous broadleaf
      G    - grass
      F    - forb (herbaceous flowering plants, non-woody)
      C    - crops/cultivated
   This column indicates whether or not the species is considered a very important nectar source species within the state and region selected. If it is a significant source, it is indicated here with a 'Y' and the row is highlighted.

In this context, important is defined by Ayers and Harman as those species that "reliably produce a large percent of the harvested honey" within the selected region.


 For those wishing to see more detailed information about any species in the list, please visit the USDA PLANTS Database web site and search by any of the first three columns from the table.

This output was derived from content created by Ayers and Harman, and published as Chapter 11 "Bee Forage of North America and the Potential for Planting for Bees" from the book The Hive and the Honey Bee, 1992, Graham, J. ed. Dadant and Sons Inc. Hamilton, Illinois.
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Last Updated: September 20, 2021