Abutilon theophrasti

Acalypha virginica

Acer campestre

Acer negundo

Acer palmatum

Acer platanoides

Acer rubrum

Acer saccharinum

Achillea millefolium

Aegopodium podagraria

Ailanthus altissima

Albizia julibrissin

Alcea rosea

Alfalfa

Alfilaree

Allheal

Alliaria petiolata

Allium vineale

Alsike Clover

Amaranthus alba

Amaranthus blitum

Amaranthus retroflexus

Ambrosia artemisiifolia

Ambrosia trifida

American Beech

American Bladdernut

American Holly

American Ivy

American Nightshade

American-Spinach

Amorpha fruticosa

Ampelopsis brevipedunculata

Amur Peppervine

Anagallis arvensis

Anethum graveolens

Angel's Hair

Angel's Trumpet

Annual Artemisia

Annual Ragweed

Annual Sowthistle

Annual Wormwood

Anthemis cotula

Apocynum cannabinum

Arctium lappa

Arctium minus

Arctium tomentosum

Arenaria serpyllifolia

Aralia spinosa

Artemisia annua

Artemisia vulgaris

Asclepias incarnata

Asclepias syriaca

Asclepias tuberosa

Ashleaf Maple

Asiatic Dayflower

Asiatic Tearthumb

Asplenium platyneuron

Aster pilosus

Atriplex prostrata

Bachelor's Button

Bacon and Eggs

Bahama Grass

Barbarea verna

Bardane

Barnyardgrass

Basil

Bee Balm

Beech

Beefsteak Plant

Bear's Grape

Beautiful Sunflower

Bedstraw

Beggar's Button

Belvedere

Belvedere-Cypress

Berberis thunbergii

Bermuda Grass

Bermudagrass

Bidens bipinnata

Big Taper

Bigbract Verbena

Bigbract Vervain

Birdfoot Deervetch

Bird's Foot Deervetch

Bird's Foot Trefoil

Birdsfoot Deervetch

Birdsfoot Trefoil

Bishop's Gout-weed

Bishop's Weed

Bitter Dock

Bittersweet

Bittersweet Nightshade

Bitterweed

Black Locust

Black-Eyed Susan

Black Medick

Blackseed Plantain

Bladder Campion

Bladder Ketmia

Bladdernut

Blister Flower

Bloodwort

Blue Plantain Lily

Blue Sailors

Blue Vervain

Blue Violet

Bluestem Goldenrod

Bouncing Bet

Bouquet-Violet

Box Elder

Bracted Verbena

Bracted Vervain

Breitenbach

Broadleaf Cattail

Broadleaf Plantain

Broussonetia papyrifera

Buckhorn

Buckhorn Plantain

Buddleja davidii

Bulbous Buttercup

Bulbous Crowfoot

Bull Thistle

Bur Cucumber

Burning Bush

Butter and Eggs

Butterfly Bush

Butterfly-Weed

Butterprint

Butter-Weed

Buttonbush

Buttonweed

Buttonweed

Calystegia sepium

Camelina microcarpa

Cammock

Camphorweed

Campsis radicans

Canada Thistle

Canadian Horseweed

Candle-Wick

Cancerjalap

Cannabis indica

Cannabis sativa

Capsella bursa-pastoris

Cardamine hirstuta

Carduus nutans

Careless Weed

Carex crinita

Carolina Cranesbill

Carolina Geranium

Carolina Horsenettle

Carpet Weed

Carpenter's Grass

Castor Aralia

Catalpa speciosa

Catchweed

Catchweed Bedstraw

Catnip

Cats-Foot

Centaurea biebersteinii

Centaurea cyanus

Celastrus orbiculatus

Cephalanthus occidentalis

Chaenorhinum minus

Chamaecrista fasciculata

Chamaesyce maculata

Chamaesyce nutans

Chamomile

Cheerful Sunflower

Chelidonium majus

Chenopodium album

Chenopodium ambrosioides

Chenopodium pumilio

Chestnut Oak

Chickweed

Chicory

Chinese Basil

Chrysanthemum Weed

Cichorium intybus

Cirsium arvense

Cirsium vulgare

Cercis canadensis

Cladonia

Clasping Bellwort

Cleavers

Cleome hassleriana

Climbing False Buckwheat

Climbing Nightshade

Coak

Cocklebur

Coffeeweed

Commelina communis

Common Balm

Common Blue Violet

Common Burdock

Common Buttonbush

Common Cat's-Ear

Common Cattail

Common Cinquefoil

Common Cocklebur

Common Evening-Primrose

Common Groundcherry

Common Grape Hyacinth

Common Groundsel

Common Lamb's-Quarters

Common Mallow

Common Mallow

Common Milkweed

Common Morning Glory

Common Mugwort

Common Mullein

Common Plantain

Common Privet

Common Quickweed

Common Ragweed

Common Reed

Common St. John's Wort

Common Sowthistle

Common Speedwell

Common Sunflower

Common Teasel

Common Three-Seeded Mercury

Common Vetch

Common Yarrow

Common Yellow Oxalis

Compass Plant

Conium maculatum

Convolvulus arvensis

Conyza canadensis

Copper-Leaf

Corn Speedwell

Cornflower

Coronilla varia

Cortaderia selloana

Cotton-Weed

Couch Grass

Cow-Itch

Crabgrass, Hairy

Crabgrass, Large

Creeping Charlie

Creeping Lady's Sorrel

Creeping Oxalis

Creeping Primrose Willow

Creeping Verbena

Creeping Woods

Creeping Woodsorrel

Creeping Yellow Woodsorrel

Crowberry

Crowdipper

Crown Vetch

Curly Dock

Cuscuta

Cymbalaria muralis

Cynodon dactylon

Cypress Spurge

Daisy Fleabane

Dandelion

Dame's Rocket

Datura stramonium

Datura innoxia

Daucus carota

Dead Nettle

Devilguts

Devil's Grass

Devil's Hair

Devil's Ringlet

Devil's Trumpet

Devil's Walkingstick

Dhutra

Diamond Three-Seed Mercury

Digitaria sanguinalis

Dill

Diplotaxis tenuifolia

Dipsacus fullonum

Disc Mayweed

Dodder

Dog Daisy

Dog Fennel

Dogtooth Violet

Downy Thorn Apple

Drooping Star of Bethlehem

Duchesnea indica

Dwarf Mallow

Dwarf Snapdragon

Early Winter Cress

Early Yellow Rocket

Eastern Black Nightshade

Eastern Hemlock

Eastern Redbud

Eastern White Pine

Ebony Spleenwort

Echinochloa crus-galli

Eclipta prostrata

Eggs and Bacon

Eleusine indica

Empress Tree

English Ivy

English Oak

English Plantain

English Privet

Epazote

Erigeron philadelphicus

Erigeron strigosus

Erodium cicutarium

Eruca vesucaria

Erythronium americanum

Euonymus alatus

Eupatorium rugosum

Eupatorium serotinum

Euphorbia cyparissias

Euphorbia dentata

European Morning Glory

Eurybia divaricata

Eutrochium fistulosum

Evening Lychnis

Eyebane

Fagus americana

Fagus ferruginea

Fagus grandifolia

False Daisy

False Dandelion

False Golden Aster

False Indigo

False Solomon's Seal

False Spikenard

Falseflax

Fat-hen

Feathery False Lily of the Valley

Feathery False Solomon's Seal

Field Balm

Field Bindweed

Field Daisy

Field Fleabane

Field Forget-Me-Not

Field Maple

Field Pennycress

Field Rush

Fig Buttercup

Filaree

Fireball

Five Finger

Fiveleaved Ivy

Flaxweed

Floating Primrose Willow

Flower-Of-An-Hour

Foxglove Beardtongue

Fraxinus americana

French Hollyhock

Fringed Sedge

Froelichia gracilis

Frogbit

Frost Root

Fuller's Teasel

Galanthus nivalis

Galinsoga ciliata

Galium aparine

Galium mollugo

Garden Nightshade

Garden Purslane

Garden Rocket

Garden Tomato

Garden Vetch

Garlic Mustard

Geranium carolinianum

Gill-Over-The-Ground

Giant Ragweed

Ginkgo

Glechoma hederacea

Goat's Beard

Gold Moss

Golden Rain Tree

Goldthread

Goosegrass

Goosegrass

Gordoloba

Gout Weed

Gowan

Grama

Grape Hyacinth

Graveyard Moss

Great Ragweed

Greater Burdock

Greater Celandine

Greater Plantain

Green Adder's Mouth

Green Arrow

Green Bristlegrass

Green Carpet Weed

Green Foxtail

Green Pigweed

Ground Ivy

Groundcherry

Gymnocladus dioicus

Hailplant

Hairweed

Hairy Aster

Hairy Bittercress

Hairy Cat's-Ear

Hairy Crabgrass

Hairy Galinsoga

Hairy Vetch

Hamamelis virginiana

Hay-Fever Weed

Haystack-Weed

Heartleaf Four O'clock

Hedera helix

Hedge Bindweed

Hedge Mustard

Hedgeweed

Helenium amarum

Helianthus annuus

Helianthus x laetiflorus

Hell Bind

Hemlock

Hemp

Hemp Dogbane

Henbit

Herba Sancta Mariæ

Hesperis matronalis

Heterotheca subaxillaris

Hibiscus laetiflorus

Hibiscus syriacus

Hibiscus trionum

High Mallow

Hog Weed

Hollow Joe-Pye-Weed

Holly

Hollyhock

Honeysuckle

Hooded Blue Violet

Hop Clover

Hop Medick

Hordium jubatum

Horn of Plenty

Horsenettle

Horseweed

Hosta

Hosta ventricosa

Humulus japonicus

Husk Tomato

Hypericum perforatum

Hypochaeris radicata

Ilex opaca

Impatiens capensis

Impatiens pallida

Indian Doab

Indian Goosegrass

Indian Hemp

Indian Hemp

Indian Hemp

Indian Mallow

Inkberry

Ipomoea hederacea

Ipomoea purpurea

Iris pseudacorus

Ivyleaf Morning-glory

Ivy-Leaved Toadflax

Ivy leaved Morning-glory

Jacob's Ladder

Jamestown-Weed

Japanese Barberry

Japanese Bamboo

Japanese Honeysuckle

Japanese Hop

Japanese Knotweed

Japanese Maple

Japanese Pachysandra

Jesuit's Tea

Jewelweed (Orange)

Jewelweed (Pale/Yellow)

Jim Hill Mustard

Jimsonweed

Jumpseed

Juncus tenuis

Kalopanax septemlobus

Kenilworth Ivy

Kentucky Coffeetree

Kiss Me Over The Garden Gate

Klamath Weed

Kochia scoparia

Koelreuteria paniculata

Kudzu

Lactuca serriola

Lamb's Ears

Lamb's Quarter

Lamb's Tongue

Lamium amplexicaule

Lamium purpureum

Lance Leaved Plantain

Lanceleaf Plantain

Lanceleaf Indianwheat

Large Crabgrass

Late Boneset

Lateflowering Thoroughwort

Lathyrus latifolius

Lemon Balm

Ledpidium virginicum

Ligustrum vulgare

Lesser Burdock

Lesser Celandine

Linaria canadensis

Linaria vulgaris

Liquidambar styraciflua

Liriodendron tulipifera

Little Hogweed

Littleseed Falseflax

Littlepod Falseflax

Liverwort

Livid Pigweed

Lobularia maritima

Lolium perenne

London Planetree

Longleaf Groundcherry

Lonicera japonica

Lotus corniculatus

Love Vine

Ludwigia peploides

Lythrum salicaria

Mad-Apple

Magnolia tripetala

Maianthemum racemosum

Malice

Mallow

Malva neglecta

Malva sylvestris

Marchantia polymorpha

Mare's Tail

Marguerite

Marijuana (Cannabis indica)

Marijuana (Cannabis sativa)

Matricaria discoidea

Mayweed (Ambrosia artemisiifolia)

Mayweed (Anthemis cotula)

Mayweed Chamomile

Meadow Geranium

Meadow Violet

Medicago lupulina

Medicago sativa

Melilotus alba

Melilotus officinalis

Melissa officinalis.

Mentha spicata

Mentha x piperita

Mercury Weed (A. virginica)

Mercury Weed (A. rhomboidea)

Mexican Burning Bush

Mexican Fireweed

Mexican Tea

Mile-A-Minute Vine

Milfoil

Milk Purslane

Milkweed (Asclepias syriaca)

Mimulus alatus

Mint (Mentha x piperita)

Mint (Mentha spicata)

Mirabel

Mirabilis nyctaginea

Mock Cypress

Mock Strawberry

Modesty

Mollugo verticillata

Morning Glory

Morus alba

Morus rubra

Moss-Rose

Moss-Rose Purslane

Moth Mullein

Mugwort

Mulberry, Paper

Mulberry, Red

Multiflora Rose

Munyeroo

Muscari botryoides

Musk Thistle

Myosotis arvensis

Narrow Leaved Plantain

Narrowleaf Plantain

Nepeta cataria

New York Ironweed

Nodding Plumeless Thistle

Nodding Smartweed

Nodding Spurge

Nodding Thistle

Nonesuch

Northern Catalpa

Northern Red Oak

Norway Maple

Nosebleed

Ocimum basilicum

Oenothera biennis

Old-Field Toadflax

Old-man's-pepper

Orange Jewelweed

Oriental Bittersweet

Ornithogalum nutans

Ornithogalum umbellatum

Oxalis corniculata

Oxalis stricta

Oxeye Daisy

Ox-eye Daisy

Pachysandra

Pachysandra terminalis

Pale Jewelweed

Paleyellow Iris

Palmate Ragweed

Pampas Grass

Pampasgrass

Parthenocissus quinquefolia

Partridge Pea

Passiflora incarnata

Passion Flower

Paulownia tomentosa

Pompous Grass

Paper Mulberry

Path Rush

Pennycress

Penstemon digitalis

Peppermint

Perilla frutescens

Perennial Pea

Perennial Ryegrass

Perennial Wallrocket

Perovskia atriplicifolia

Persicaria perfoliata

Petunia, Wild

Petunia integrifolia

Philadelphia Fleabane

Phragmites australis

Phytolacca americana

Physalis longifolia

Pie Marker

Pie Marker

Pigweed

Pig-Stye-Daisy

Pilewort

Pineapple Weed

Pin Clover

Pinellia ternata

Pink Queen

Pinus strobus

Plantago lanceolata

Plantago major

Plantago rugelii

Plantago virginica

Platanus hybrida

Plumajillo

Poison Berry

Poison Hemlock

Poison Ivy

Poke

Pokeberry

Pokeroot

Pokeweed

Pokum

Polygonum aviculare

Polygonum caespitosum

Polygonum cuspidatum

Polygonum lapathifolium

Polygonum orientale

Polygonum persicaria

Polygonum scandens

Polygonum virginianum

Poorland Flower

Porcelainberry

Portulaca grandiflora

Portulaca oleracea

Potentilla argentea

Potentilla norvegica

Potentilla simplex

Poverty Rush

Prickly Lettuce

Princess Tree

Privet

Procumbent Yellow-Sorrel

Prostrate Knotweed

Prostrate Petunia

Prostrate Spurge

Prostrate Vervain

Pueraria montana

Pull Down

Purple Deadnettle

Purple Loosestrife

Purple Lythrum

Purple Mint

Purple Morning Glory

Purple Passion Flower

Purple Perilla

Purpletop Verbena

Purslane

Pusley

Queen Anne's Lace

Quercus acutissima

Quercus prinus

Quercus robur

Quercus rubra

Rabbitfoot Clover

Ragweed, Common

Ramstead

Ranunculus bulbosus

Ranunculus ficaria

Rat Tail

Rattlesnake Weed

Red Belvedere

Red Clover

Red Maple

Red Mulberry

Redroot Pigweed

Rhombic Copper-Leaf

Rhus hirta

Ribgrass

Ribwort

Ribwort Plantain

Robinia pseudoacacia

Rock Speedwell

Roman Wormweed

Rosa multiflora

Rose Mallow

Rose of Sharon

Rough Cinquefoil

Rough Cocklebur

Rough Fleabane

Rough Pigweed

Round Dock

Roundleaf Mallow

Roundleaved Triodanis

Royal Paulownia

Rudbeckia hirta

Rumex crispus

Rumex obtuifolius

Rumex salicifolius

Running Mallow

Russian Sage

Ryegrass

Sacred Datura

Sagewort

St. Anthony's Turnip

St. John's Wort

Saponaria officinalis

Sassafras

Sawtooth Oak

Scarlet Pimpernel

Scutch Grass

Sedum sarmentosum

Senecio vulgaris

Setaria viridis

Shaggy Soldier

Shamrock

Sharpwing Monkey Flower

Shepherd's Purse

Shiso

Shoo-Fly

Short Hair

Showy Sunflower

Sicos angulatus

Silene alba

Silene latifolia

Silver Maple

Silver Pampas Grass

Silvery Cinquefoil

Sisymbrium altissimum

Sisymbrium officinale

Skoke

Skokum

Sleepydick

Sleeping Beauty

Slender Rush

Slender Snakecotton

Small Burdock

Small Fruited Falseflax

Smaller Burdock

Smallseed Falseflax

Smooth Sowthistle

Sneezeweed

Sneezeweed

Snowdrop

Soft Maple

Soapwort

Solanum carolinense

Solanum dulcamara

Solanum lycopersicum

Solanum ptychanthum

Soldier's Woundwort

Solidago caesia

Solidago flexicaulis

Sonchus asper

Sonchus oleraceus

Sour Trefoil

Sour Grass

Sowthistle

Spanish Needles

Spearmint

Spiderflower

Spiderwort

Spotted Knapweed

Spotted Ladysthumb

Spotted Sandmat

Spotted Spurge

Staghorn Sumac

Sleeping Beauty

Slender Rush

Slender Yard Rush

Stachys byzantina

Staphylea trifolia

Star-of-Bethlehem

Starweed

Starwort

Stellaria media

Sticky Willy

Stinking Chamomile

Stinkweed

Stone Clover

Stonecrop

Stork's Bill

Stranglevine

Strangleweed

Stringy Stonecrop

Summer Coleus

Summer Cypress

Sunflower, Common

Sycamore

Swamp Maple

Swamp Milkweed

Swamp Verbena

Sweet Alyssum

Sweet Sagewort

Sweet William

Sweetgum

Tall Mallow

Tall Mustard

Tall Tumble Mustard

Talus Slope Penstemon

Tangle Gut

Taraxacum officinale

Thlaspi arvense

Thorn-Apple

Thousand-leaf

Three-Seeded Mercury (A. virginica)

Three-Seeded Mercury (A. rhomboidea)

Thyme-leaved Sandwort

Toloache

Toothed Spurge

Toothedleaf Poinsetta

Tomato

Touch-Me-Not (Orange)

Touch-Me-Not (Pale/Yellow)

Toxicodendron radicans

Tradescantia virginiana

Tragopogon dubius

Tree of Heaven

Triangle Orache

Trifolium arvense

Trifolium hybridum

Trifolium pratense

Trifolium repens

Triodanis perfoliata

Trumpet Creeper

Trumpet Vine

Tsuga canadensis

Tuliptree

Tumble Pigweed

Tumble Mustard

Tumbleweed

Typha latifolia

Umbrella Magnolia

Umbrella Tree

Umbrellawort

Uruguayan Pampas Grass

Uruguayan Pampasgrass

Variegated Bigleaf Periwinkle

Velvet Dock

Velvet Leaf

Velvet Weed

Venus' Looking-Glass

Verbascum blattaria

Verbascum thapsis

Verbena bonariensis

Verbena bracteata

Verbena hastata

Verbena urticifolia

Verbesina alternifolia

Vernonia noveboracensis

Veronica arvensis

Vicia sativa

Vicia villosa

Vinca major

Viola bicolor

Viola sororia

Viola tricolor

Violet-Flowered Petunia

Virginia Copperleaf

Virginia Creeper

Virginia Pepperweed

Virginia Spiderwort

Virginia Three-Seed Mercury

Wall Speedwell

West Indian Nightshade

Western Goat's Beard

Western Jimson Weed

Western Salsify

White Ash

White Campion

White Daisy

White Clover

White Goosefoot

White Hairy Aster

White Mulberry

White Oldfield Aster

White Pigweed

White Pine

White Snakeroot

White Sweet Clover

White Verbena

White Wood Aster

Whiteweed

Wild Basil

Wild Burdock

Wild Carrot

Wild Garlic

Wild Geranium

Wild Lettuce

Wild Madder

Wild Petunia

Wild Red Basil

Wild Rhubarb

Wild Sago

Wild Snapdragon

Wild Tansy

Willow-Leaf Dock

Winged Euonymous

Winged Monkey Flower

Wingstem

Winter Vetch

Winterweed

Wire Grass

Wire Rush

Witch Hazel

Witches' Shoelaces

Wormseed

Wood Mallow

Woodbine

Woody Nightshade

Woolly Burdock

Woolly Hedgenettle

Wooly Mullein

Woolypod Vetch

Xanthium strumarium

Yarrow

Yellow Flag

Yellow Goat's Beard

Yellow Poplar

Yellow Salsify

Yellow Sweet Clover

Yellow Toadflax

Yellow Trefoil

Yellow Trout Lily

Yellow Weed

Yellow Woodsorrel

Yellowdicks

Yerba-de-Tago

Zigzag Goldenrod




The Weedalogue

weeds

A Catalogue of Weeds

The Weedalogue is a project to identify the weeds known in Philadelphia Pennsylvania. For more information on the project, see the "intro" page. All of the photographs included on this site were taken with a digital camera by Gendler in Philadelphia. All scanned plants were collected in Philadelphia as well.


In addition to the index on the left of this page, there are two indices of botanical names with identifying pictures. (These are large, graphic-heavy pages)

The first species index is arranged by category, alphabetically by family and genera.
The second is arranged alphabetically by scientific name.

The Weedalogue forum has been deleted, after having some trouble with Yahoo. My apologies go out to most of the people who tried to contribute through that medium. My thanks also goes out to those who contributed useful information, but not to those who tried to lecture me about what is and what is not a weed. In this context, a weed is any plant not planted intentionally where it is found growing. This is far from a technical definition, but a simple gardener's one. The site was meant to help gardeners identify plants coming up that they did not plant. It is up to them to decide of the plant or valuable or not.

I also want to apologize that the site has not been updated or added to in a few years now and will probably not be in quite a while to come as my focus has been elsewhere. I hope that people still enjoy it as it is.

Appended is a a reference list of helpful resources for weeds and wildflowers.