Help Survey N.E. Native Bees of Conservation Concern

The Northeast Association of Fish and Wildlife Agencies (NEAFWA) has identified several native bee species that are of regional conservation concern in the Northeast.

Now we have an opportunity to help.

Many of these bees are specialists—they visit only one or a handful of plant species for pollen. If we know which plants they depend on and when those plants bloom, we have a much better chance of finding and documenting these remarkable insects.

Will you help?

As you spend time outdoors this season, whether in your own yard, along a trail, at a conservation area, or beside a wetland, keep an eye on the flowering plants listed below. When you find one in bloom, take a few minutes to watch for visiting bees.

If you photograph one of the target bee species—or even an unfamiliar bee visiting one of these plants—please upload your observations to iNaturalist. Every quality observation helps researchers better understand where these bees occur, when they are active, and which habitats continue to support them.

You don't have to be an expert. The beauty of iNaturalist is that observations are reviewed by a community of naturalists and specialists who can often help identify both the bee and the plant.

What to Watch For

Many of the bees of regional concern are closely tied to specific native plants, including:

• Willows (Salix)
• Bellworts (Uvularia)
• Lupines (Lupinus)
• Beardtongues (Penstemon)
• Flowering Raspberry (Rubus odoratus)
• Dogwoods (Cornus)
• Holly (Ilex)
• Maleberry (Lyonia ligustrina)
• Yellow Wild Indigo (Baptisia tinctoria)
• Loosestrifes (Lysimachia)
• Pickerelweed (Pontederia cordata)
• Bee Balm (Monarda)
• Blueberries and Cranberries (Vaccinium)
• Goldenrods (Solidago)
• Native Asters (Symphyotrichum)

A complete list of the target bees, their preferred food plants, bloom times, habitats, and flight seasons is included below.

Bloom in ascending calendar format

Plant	Apr	May	Jun	Jul	Aug	Sept	Oct
Pussy Willow (Salix discolor)	●	●
Black Willow (Salix nigra)	●	●
Heart-leaved Willow (Salix eriocephala)	●	●
Crack Willow (Salix fragilis)	●	●
Weeping Willow (Salix pendulina)	●	●
Meadow Willow (Salix petiolaris)	●	●
Sessile Bellwort (Uvularia sessilifolia)	●	●
Philadelphia Fleabane (Erigeron philadelphicus)	●	●	●
Woodland Strawberry (Fragaria vesca)	●	●	●
Azure Bluets (Houstonia caerulea)	●	●	●
Smooth Yellow Violet (Viola eriocarpa)	●	●	●
Labrador Violet (Viola labradorica)	●	●	●	●
Northern Highbush Blueberry (Vaccinium corymbosum)		●
Pagoda Dogwood (Cornus alternifolia)		●	●
Red-osier Dogwood (Cornus sericea)		●	●
Robin's Plantain (Erigeron pulchellus)		●	●
Starflower (Lysimachia borealis)		●	●
Black Raspberry (Rubus occidentalis)		●	●
Dwarf Red Blackberry (Rubus pubescens)		●	●
Large-flowered Bellwort (Uvularia grandiflora)		●	●
Velvet-leaf Blueberry (Vaccinium myrtilloides)		●	●
Long-spurred Violet (Viola rostrata)		●	●
False Indigo-bush (Amorpha fruticosa)		●	●	●
Bunchberry (Cornus canadensis)		●	●	●
Gray Dogwood (Cornus racemosa)		●	●	●
Wild Geranium (Geranium maculatum)		●	●	●
Winterberry (Ilex verticillata)		●	●	●
Bigleaf Lupine (Lupinus polyphyllus)		●	●	●
Tufted Loosestrife (Lysimachia thyrsiflora)		●	●	●
Virginia Creeper (Parthenocissus quinquefolia)		●	●	●
Allegheny Blackberry (Rubus allegheniensis)		●	●	●
Red Clover (Trifolium pratense)		●	●	●	●
American Cranberry (Vaccinium macrocarpon)		●	●	●
Canada White Violet (Viola canadensis)		●	●	●
Tufted Vetch (Vicia cracca)		●	●	●	●
Maleberry (Lyonia ligustrina)			●	●
Boston Ivy (Parthenocissus tricuspidata)			●	●
Swamp Dewberry (Rubus hispidus)			●	●
Sandbar Willow (Salix interior)			●	●
Small Cranberry (Vaccinium oxycoccos)			●	●
Spreading Dogbane (Apocynum androsaemifolium)			●	●	●
Hemp Dogbane (Apocynum cannabinum)			●	●	●
Prairie Fleabane (Erigeron strigosus)			●	●	●	●
Creeping Jenny (Lysimachia nummularia)			●	●	●
Whorled Yellow Loosestrife (Lysimachia quadrifolia)			●	●	●
Swamp Candles (Lysimachia terrestris)			●	●	●
Purple-flowering Raspberry (Rubus odoratus)			●	●	●
Eastern Daisy Fleabane (Erigeron annuus)			●	●	●	●	●
Fringed Loosestrife (Lysimachia ciliata)				●	●
Bee Balm (Monarda didyma)				●	●
Wild Bergamot (Monarda fistulosa)				●	●
Early Goldenrod (Solidago juncea)				●	●
Beck's Water-marigold (Bidens beckii)				●	●	●
Devil's Beggarticks (Bidens frondosa)				●	●	●	●
Chicory (Cichorium intybus)				●	●	●
Pickerelweed (Pontederia cordata)				●	●	●
Canada Fleabane (Erigeron canadensis)				●	●	●	●
Fen Grass-of-Parnassus (Parnassia glauca)					●	●
White Goldenrod (Solidago bicolor)					●	●
Stout Goldenrod (Solidago squarrosa)					●	●
Bog Goldenrod (Solidago uliginosa)					●	●
Blue-stemmed Goldenrod (Solidago caesia)					●	●	●
Canada Goldenrod (Solidago canadensis)					●	●	●
Zigzag Goldenrod (Solidago flexicaulis)					●	●	●
Giant Goldenrod (Solidago gigantea)					●	●	●
Downy Goldenrod (Solidago puberula)					●	●	●
Rough-stemmed Goldenrod (Solidago rugosa)					●	●	●
Blue Wood Aster (Symphyotrichum cordifolium)					●	●	●
Calico Aster (Symphyotrichum lateriflorum)					●	●	●
New England Aster (Symphyotrichum novae-angliae)					●	●	●
Swamp Aster (Symphyotrichum puniceum)					●	●	●

Food/Host Plants that support Bees of Regional Concern

Bloom time	1st Mo.	Last Mo.	plant species	Common Name	Bee species	Flight season
between late March and early May	3	5	Salix discolor	Pussy Willow	Andrena nida	Spring
late March through May	3	5	Salix nigra	black willow	Andrena nida	Spring
April and running through early May	4	5	Salix eriocephala	Heart-leaved Willow or Woolly-headed Willow	Andrena nida	Spring
April through May	4	5	Salix fragilis	Crack Willow	Andrena nida	Spring
April to May	4	5	Salix pendulina	common weeping willow hybrid	Andrena nigrae	May
mid-April through May	4	5	Salix petiolaris	Meadow Willow	Andrena nida	Spring
mid-August through September	4	5	Solidago bicolor	White Goldenrod or Silverrod	Andrena braccata	August-October
late April through May	4	5	Uvularia sessilifolia	sessile-leaved bellwort or wild oats	Andrena uvulariae	Spring
late April through June	4	6	Erigeron philadelphicus	Philadelphia fleabane	Protandrena aestivalis	Late summer to fall
April to June	4	6	Fragaria vesca	woodland strawberry	Osmia lignaria	March-June
April, May, and June	4	6	Houstonia caerulea	Azure bluets or Quaker ladies	Macropis ciliata	May-August
April to early June. Peak mid to late April	4	6	Viola eriocarpa	smooth yellow violet	Osmia lignaria	March-June
April to June or July	4	7	Viola labradorica	Labrador violet	Osmia lignaria	March-June
May	5	5	Vaccinium corymbosum	Northern Highbush Blueberry	Habropoda laboriosa	March-May
mid-May through June	5	6	Cornus alternifolia	pagoda dogwood or alternate-leaf dogwood	Andrena persimulata	May-July
late May to early June	5	6	Cornus sericea	Red-osier Dogwood	Andrena persimulata	May-July
late May through June	5	6	Erigeron pulchellus	Robin's Plantain	Protandrena aestivalis	Late summer to fall
Mid-May - June	5	6	Lysimachia borealis	Starflower	Macropis ciliata	May-August
May and June	5	6	Rubus occidentalis	black raspberry	Osmia felti	June-August
late May through June	5	6	Rubus pubescens	dwarf red blackberry or dwarf raspberry	Osmia lignaria	March-June
May and early June	5	6	Uvularia grandiflora	Large-flowered Bellwort or Merrybells	Andrena uvulariae	Spring
mid-May and June.	5	6	Vaccinium myrtilloides	elvet-leaf blueberry or sour-top blueberry	Habropoda laboriosa	March-May
peaking between late May and late June	5	6	Viola rostrata	Long-spurred violet	Osmia lignaria	March-June
late May through July	5	7	Amorpha fruticosa	False Indigo-Bush	Hylaeus saniculae	June-August
late May through early July	5	7	Cornus canadensis	bunchberry or creeping dogwood	Andrena persimulata	May-July
late May through early to mid-July	5	7	Cornus racemosa	Gray Dogwood	Andrena persimulata	May-July
May to July	5	7	Geranium maculatum	wild geranium or spotted cranesbill	Osmia lignaria	March-June
late May through July	5	7	Ilex verticillata	Winterberry	Colletes banksi	April-July
late May to early July	5	7	Lupinus polyphyllus	Bigleaf or Garden Lupin	Habropoda laboriosa	March-May
late May through July. Peak early June - July	5	7	Lysimachia thyrsiflora	Tufted loosestrife	Macropis ciliata	May-August
late May through July	5	7	Parthenocissus quinquefolia	Virginia Creeper	Lasioglossum marinum	April-October
late May through July	5	7	Rubus allegheniensis	Allegheny blackberry	Osmia felti	June-August
May through September. Peak - June, July.	5	7	Trifolium pratense	Red Clover	Osmia proxima	May-September
late May through mid-July	5	7	Vaccinium macrocarpon	American Cranberry	Habropoda laboriosa	March-May
May to July	5	7	Viola canadensis	Canada White Violet	Osmia lignaria	March-June
late May through August	5	8	Vicia cracca	tufted vetch, cow vetch, or bird vetch	Osmia lignaria	March-June
June–July	6	7	Lyonia ligustrina	Maleberry or he-huckleberry	Melitta melittoides	May-September
typically June through July	6	7	Parthenocissus tricuspidata	Boston Ivy	Lasioglossum marinum	April-October
June to July	6	7	Rubus hispidus	swamp dewberry or bristly dewberry	Osmia felti	June-August
late June and early July	6	7	Salix interior	Sandbar Willow	Andrena nida	Spring
June and July	6	7	Vaccinium oxycoccos	small cranberry	Habropoda laboriosa	March-May
Mid June-Aug	6	8	Apocynum androsaemifolium	Spreading Dogbane	Macropis ciliata	May-August
June through August	6	8	Apocynum cannabinum	hemp dogbane or Indian hemp	Macropis ciliata	May-August
May through October. Peak June - Aug	6	8	Erigeron strigosus	Prairie or Rough Fleabane	Protandrena aestivalis	Late summer to fall
June through August	6	8	Lysimachia nummularia	Creeping Jenny or Moneywort	Macropis nuda	June-September
June through August	6	8	Lysimachia quadrifolia	Whorled Yellow Loosestrife	Epeoloides pilosulus	June-July
late June through August. Peak inJuly	6	8	Lysimachia terrestris	Swamp Candles or Swamp Yellow Loosestrife	Macropis nuda	June-September
June to August	6	8	Rubus odoratus	purple-flowering raspberry	Osmia proxima	May-September
June through October	6	10	Erigeron annuus	Eastern Daisy Fleabane	Protandrena aestivalis	Late summer to fall
July–August	7	8	Lysimachia ciliata	Fringed loosestrife	Epeoloides pilosulus	June-July
mid-July to late August	7	8	Monarda didyma	Bee Balm or Scarlet Bee Balm	Dufourea monardae	July and August
mid-July to late August	7	8	Monarda fistulosa	Bee Balm or Scarlet Bee Balm	Dufourea monardae	July and August
July through August	7	8	Solidago juncea	Early Goldenrod	Andrena braccata	August-October
July through September	7	9	Bidens beckii	Beck's water-marigold	Lasioglossum marinum	April-October
late July through October. Peak late Aug - Sept	7	9	Bidens frondosa	Devil's Beggarticks or Common Beggarticks	Lasioglossum marinum	April-October
July–September	7	9	Cichorium intybus	Chicory	Dufourea monardae	July and August
July–September	7	9	Pontederia cordata	Pickerelweed	Melissodes apicatus	March-July
July–September	7	9	Pontederia cordata	Pickerelweed	Melissodes apicatus	March-July
July to October	7	10	Erigeron canadensis	Canadian horseweed or Canada fleabane	Protandrena aestivalis	Late summer to fall
August–September	8	9	Parnassia glauca	Fen grass of Parnassus	Andrena parnassiae	August-October
August through September	8	9	Solidago squarrosa	stout or squarrose goldenrod	Andrena braccata	August-October
August through September	8	9	Solidago uliginosa	Bog Goldenrod	Dianthidium simile	July-September
between August and October. Peak in Sept.	8	10	Solidago caesia	Blue-stemmed or Wreath Goldenrod	Andrena braccata	August-October
between August and October. Peak in Sept.	8	10	Solidago canadensis	Blue-stemmed or Wreath Goldenrod	Andrena braccata	August-October
August and peaking through September and October.	8	10	Solidago flexicaulis	Canada Goldenrod	Andrena canadensis	August-September
August through October	8	10	Solidago gigantea	Giant Goldenrod or Late Goldenrod	Andrena braccata	August-October
August through October	8	10	Solidago puberula	Downy Goldenrod	Andrena braccata	August-October
August through October	8	10	Solidago rugosa	wrinkle-leaf goldenrod or rough-stemmed goldenrod	Andrena braccata	August-October
late summer through mid-to-late fall, peaking in September and October	8	10	Symphyotrichum cordifolium	Blue Wood Aster or Heart-leaved Aster	Protandrena aestivalis	Late summer to fall
late summer through mid-to-late fall, peaking in September and October	8	10	Symphyotrichum lateriflorum	Blue Wood Aster or Heart-leaved Aster	Protandrena aestivalis	Late summer to fall
August through October	8	10	Symphyotrichum novae-angliae	New England Aster	Dianthidium simile	July-September
August through October or through first frost	8	10	Symphyotrichum puniceum	Swamp Aster or Purplestem Aster	Dianthidium simile	July-September

Native bee species that are of regional concern in the Northeast 

From The Northeast Association of Fish and Wildlife Agencies (NEAFWA)

Bee Species	Food/host plants	Habitat	Flight Season	Threats
Andrena braccata	Solidago specialist (has been collected on other Asteraceae)	open deep sandy soils/dunes, meadows, pollinator plantings	August-October	Habitat loss from development, herbicides killing host plant
Andrena nida	Salix (Willow) specialist	hardwood forest,  wetlands, Wet areas with willow	Spring	Loss of host plant/draining of wetlands
Andrena rehni	Specialist on Castanea; Castanea dentata (American chestnut) and C. pumila (chinquapin)	Forest edges and openings where chinquapin can bloom along with American chestnut backcross orchards and plantings	May-July	Loss of chestnuts from chestnut blight
Andrena uvulariae	Bellwort (Uvularia) specialist, U. sessilifolia	Woodlands and forests with Uvularia populations (can be scattered), forest edges	Spring	invasive species
Epeoloides pilosulus	Host species collect pollen and oils from native Lysimachia; Lactuca pulchella (DL)	This species is found in prairies, fields, and wetlands	June-July	Loss of habitat due to development, agriculture, invasive species and utility corridors
Lasioglossum marinum	range of herbaceous plants; Bidens, Helianthus and Parthenocissus, Alternanthera floridana	Only in dunes and open sandy beaches adjacent to salt water including urban areas	April-October	Habitat loss, sea level rise
Macropis ciliata	Collect oils from Lysimachia. Specialist on Lysimachia, but nectars on Apocynum, Houstonia, Hydrangea, Rhus glabra, Melilotus officinalis, Ceanothus americanus	Open area with loosestrife usually wetlands or shrubby areas	May-August	Loss of habitat (host plant)
Macropis patellata	Lysimachia specialist (L. ciliata)	variety of wetland habitats with native Lysimachia	June-August	Loss of specialist host plant from development, climate change
Melissodes apicatus	Pickerelweed specialist (Pontedaria cordata)	Extensive Pontedaria cordata beds in freshwater tidal areas	March-July	Loss of pickerelweed beds
Melitta melittoides	Specialist on Lyonia (has only records for Lyonia ligustrina and not other species)	Scrub, transitional habitats, edges of wetlands where Lyonia occurs	May-September	Reduction of host plant
Osmia felti	Ribes missouriense (DL), Rubus, Vaccinium angustifolium, Viola sagittata, Sericocarpus linifolius,  (iNat)	Associated with sandy barrens	June-August	Habitat loss, Fire suppression, competition and pathogens from non-native bees
Protandrena aestivalis	Late season Asteraceae; Asteraceae: Astereae: Chrysopsis (Nutt.) Elliott, Erigeron L., Solidago L., Symphyotrichum Nees	Likely associated with sandy open fields. Summer Miner Bee has been observed near managed grasslands and floodplain forest habitat types, but has also been observed in shrublands	Late summer to fall
Andrena canadensis	Aster and Solidago	Sandy areas	August-September	Habitat and host plant loss
Andrena nigrae	Salix (willow) pollen specialist, might use other plants for nectar	old field, cropland, orchard, wetland, Wetlands and cultural landscapes with willow	May	Habitat/host plant loss
Andrena parnassiae	Parnassia caroliniana, Parnassia glauca, other Parnassia?	conifer forest, mixed forest, hardwood forest, wetlands, bogs/fens, seeps	August-October	Habitat loss, hydrological alteration that disrupts wetlands, climate change, invasion by exotic plants, water pollution, pathogens, insecticides, herbicides, off-road vehicles, mowing of roadside host plants
Andrena persimulata	Dogwood specialist, also collected on Viburnum, subgenus Swida	Wet Meadow/Shrub Swamp, forest, open habitat	May-July	Habitat loss and degradation, invasive plants and pathogens, pesticides, climate change
Anthophora walshii	yellow wild indigo (Baptisia tinctoria), orange milkweed (Asclepias tuberosa) and goldenrods (Solidago spp.), and more	open coastal habitats on sandy soil where yellow wild indigo (Baptisia tinctoria) is relatively abundant. Habitats include sandplain grasslands and similar anthropogenic habitats such as utility rights-of-way and fire breaks.	July-September	habitat loss, fire suppression, introduced pathogens, aerial insecticide spraying, non-target herbicide application, excessive deer browse of host plants, and off-road vehicles
Colletes banksi	Ilex (holly) specialist	areas of shrubby Ilex; sandy or wetland	April-July	Loss of host plant; rare species and much is unknown
Colletes solidaginis	Solidago (goldenrod) specialist	Open landscapes containing Solidago populations, possibly restricted to sandy areas, coastal areas	July-September	Habitat and host plant loss
Dianthidium simile	Symphyotrichum, Solidago	Sandy areas, lakeshores, coastal	July-September	Habitat and host plant loss
Dufourea monardae	Monarda (bee balm) specialist; sometimes others, M. fistulosa, Cichorium intybus, Amorpha canescens,  Nepeta cataria, Fagopyrum esculentum	Shrublands, Wet Meadow/Shrub Swamp, Mixed Northern Hardwoods, Floodplain Forest/Freshwater Marsh, Old Field/Managed Grasslands	July and August	Loss of host plant, habitat loss and degradation, invasive plants, pathogens, pesticides, climate change
Epeolus canadensis	Rudbeckia hirta (DL)	Forest edges, meadows, disturbed sandy areas	Summer	unknown, but regionally rare
Habropoda laboriosa	Cercis L., Lupinus L., Vaccinium L.	deep well-drained sandy soils where Vaccinium blooms	March-May	Habitat loss, reduction in blueberries from forestry production
Hylaeus saniculae	Generalist: Aralia hispida,  Amorpha fruticosa, Cicuta maculata, Crataegus crus-galli, Cryptotaenia canadensis, Eulophus americanus, Heracleum lanatum, Polygonum scandens, Sanicula canadensis, Sanicula marilandica, Taenldia integerrima and Thaspium trifoliatum (DL)	open areas	June-August	Unknown but the species is very rare
Lasioglossum georgeickworti	Baptisia, Lindernia, not totally clear	Coastal beach, maritime dune and grassland, some interior sand	all seasons	Erosion of coastal dunes.
Macropis nuda	Lysimachia ciliata specialist; also other Lysimachia Apocynum,  Lactuca pulchella	Intact wetland habitat where native loosestrifes occur is critical foraging habitat for this species. M. nuda is known from prairie fens, wet-mesic prairies, ephemeral wetlands, ditches, and along waterways	June-September	Climate change, land use change, invasive plant species, pesticides
Melitta americana	Vaccinium specialist	Cranberry bogs and other boggy habitats; nests in sandy/loose soils, sandhill	April-July	Important pollinators of cranberry/blueberry so vulnerable to pesticides
Nomada electa	Host is Solidago specialist	Same as Andrena braccata, potentially deep sandy soils	August-October	Threats to host species
Osmia lignaria	Wide range of herbaceous and woody plants; Cercis, Fragaria, Geranium, Lupinus, Malus, Prunus, Rubus, Salix, Vicia and Viola (DL)	This species is found in many habitat types, including orchards and gardens, is a generalist floral visitor. Woodlands, edges, gardens, and nearby open areas	March-June	Pesticides, fungicides, pathogens, climate change, introduced species
Osmia proxima	Round-leaf orchid (Galearis rotundifolia) and Houstonia, Pentstemon, Rubus and Trifolium.	unknown? Mixed forest?	May-September
Perdita novaeangliae	Lyonia	Brushy areas with Lyonia shrubs, wet areas	Early summer	Loss of host plant
Ptilothrix bombiformis	Hibiscus specialist; also morning glory (Ipomoea)	Freshwater wetland edges with native Hibiscus growing as well as plantings of Hibiscus species in suburban and urban areas	June-August	Altering hydrology and wetland forage plants

Why It Matters

Native bees are among the most important pollinators in our ecosystems, yet many species remain poorly understood. Some have become uncommon because their preferred habitats have disappeared. Others rely on a single genus of flowering plant that is itself becoming less common.

By documenting bees on their host plants, we can help answer important questions:

• Which bee species are still present?
• When are they active?
• Which plants are they using?
• Where do healthy populations still exist?
• Which habitats deserve additional protection?

These observations contribute to a growing body of biodiversity knowledge that can inform conservation decisions throughout the Northeast.

How You Can Participate

1. Find one of the target plants while it is blooming.
2. Watch the flowers carefully—many specialist bees are tiny and easy to overlook.
3. Photograph any bees you observe from several angles if possible.
4. Upload your observations to iNaturalist.
5. Share this project with fellow gardeners, hikers, birders, photographers, botanists, and naturalists.

Together, we can build a clearer picture of the Northeast's native bee fauna while enjoying one of nature's most fascinating groups of insects.

Every observation counts. Every photograph has the potential to document something important. And perhaps your next visit to a patch of wildflowers will reveal a bee that few people have ever noticed.

Happy "inverting!"

— Bernie Paquette
Vermont Entomology Academy

The 10-Minute Native Bee Survey Protocol

To make everyone's observations comparable, I encourage volunteers to use the same survey method whenever possible. A standardized approach helps us better understand where these bees occur, when they are active, and which plants they rely on.

What You'll Need

• Camera or smartphone for photographs

• GPS-enabled phone (or GPS unit) to record survey coordinates

• Timer or phone

• Notebook (or note-taking app)

Before You Go

• Visiting known populations in your area

• Learn to recognize the target plant before your visit.

• Review the bee species associated with that plant.

• Remember that you should photograph all bee visitors, even if they are not one of the target species.

Best Survey Conditions

• Between 9:00 a.m. and 4:00 p.m.

• Air temperature between 50°F and 110°F

• Little or no cloud cover

• Light winds (less than about 10 mph)

• No rain

Selecting a Survey Plot

• Choose a flowering patch approximately 3–10 feet across.

• Larger patches generally attract more bee activity.

• A patch containing mostly one plant species is ideal.

• If another flowering species is mixed in, simply note it.

• Record the GPS coordinates of your survey plot.

The 10-Minute Survey

1. Start a timer.

1. Observe the flowers continuously.

1. Photograph every bee—or possible bee—that visits the flowers.

1. If no insects visit during the first five minutes, move to another suitable patch and begin again.

1. If you observe any flower visitors during the first five minutes, continue observing for another five minutes, for a total survey time of 10 minutes.

Repeat as Time Allows
Upload Your Observations

• Date

• Start and end time

• Plant species

• GPS coordinates

• Location name

• Habitat (forest, meadow, roadside, wetland, garden, etc.)

• Weather conditions

• Approximate size of the flowering patch

Every Observation Matters

Choose one of the target host plants during its blooming period. You can locate plants by:

Before heading out, check that your site is publicly accessible or that you have permission to visit.

It also helps to:

Your chances of finding bees are highest when surveys are conducted:

Once you find a blooming host plant:

Sunny patches often produce the greatest bee activity.

Don't worry about identifying bees in the field. Simply take the best photographs you can.

If additional patches of the same plant are nearby, repeat the process. Record the coordinates for each separate survey.

Even surveys that produce few or no bee observations are valuable because they help document when plants were blooming and when target bees were absent.

Upload all suitable photographs of bees and other flower visitors to iNaturalist.

For each survey, try to record:

These details greatly increase the scientific value of your observations.

Finding a target bee is exciting—but observations of common bees, flies, wasps, butterflies, beetles, and even surveys where no bees are observed all contribute valuable information. Together, these standardized 10-minute surveys can help scientists better understand the distribution, habitat requirements, and conservation needs of native bees across the Northeast.

Thank you for contributing to this community science effort. Your curiosity and observations can make a real difference for native bee conservation.

Plant	Common name	Bloom Time (VT)
Amorpha canescens	Leadplant	June-Aug
Apocynum	Dogbane or Indian hemp	Late June-Aug
Asclepias tuberosa	Orange milkweed	Late June-Aug
Asteraceae	Daisy Family	Varies widely; May–October
Baptisia	Wild Indigo	Late May–June
Baptisia tinctoria	Yellow wild indigo	June–July
Bidens	Spanish Needles, Beggar-ticks	July–October
C. pumila	Allegheny chinquapin, or dwarf chestnut	June
Castanea dentata	American chestnut	Late June–July
Ceanothus americanus	New Jersey Tea	Late June–July
Cercis L	Redbuds	Late April–May
Chrysopsis	Golden Asters	August–September
Cichorium intybus	Chicory	July–September
Erigeron L	Fleabane	May–July
Fagopyrum esculentum	Buckwheat	July–August
Galearis rotundifolia	Round-leaf orchid	Late May–June
Helianthus	Sunflowers	July–September
Hibiscus	Hibiscus	July–September
Houstonia	Flowering Bluets	Late April–June
Hydrangea	Hydrangea	July–September
Ilex	Holly	May–June
Lactuca pulchella	Showy Blue Lettuce	July–September
Lindernia	Lindernia	July–September
Lupinus L	Lupines	Late May–June
Lyonia	Staggerbushes	May–June
Lyonia ligustrina	Maleberry or he-huckleberry	June–July
Lysimachia	Loosestrifes	June–August
Lysimachia ciliata	Fringed loosestrife	July–August
M. fistulosa	Wild Bergamot or Bee Balm	July–August
Melilotus officinalis	Yellow sweet clover	June–September
Monarda	Bee balm	July–August
Nepeta cataria	Catnip	June–September
Parnassia caroliniana	Carolina grass-of-Parnassus	August–September
Parnassia glauca	Fen grass of Parnassus	August–September
Parthenocissus	Virginia Creeper	Late May–June
Pentstemon	Beardtongues	Late May–June
Pontedaria cordata	Pickerelweed	July–September
Rhus glabra	Smooth sumac	June–July
Ribes missouriense	Missouri gooseberry or wild gooseberry	Late April–May
Rubus	Brambles (blackberries, raspberries)	May–June
Rudbeckia hirta	Black-eyed Susan	July–September
Sericocarpus linifolius	Narrow-leaved white-topped-aster	August–September
Solidago spp	Goldenrods	Late July–September
Symphyotrichum	American Asters	August–October
Symphyotrichum Nees	American Asters	August–October
Trifolium	Clovers	May–September
Uvularia,  U. sessilifolia	Sessile Bellwort	May
Vaccinium angustifolium	Lowbush blueberry	May–June
Vaccinium L.	Blueberry, Cranberry, Bilberry, and Lingonberry.	April–June (species dependent)
Viola sagittata	Arrowleaf violet or arrowhead violet	May–June
Willow	Willow	April–May