Invasive Plants of Maryland

clover fern
Marsilea quadrifolia 1
water spangles
Salvinia minima 2
Giant Salvinia
Salvinia molesta 3
Chinese Senna
Senna obtusifolia 2
Mimosa
Albizia julibrissin 4
kudzu
Pueraria montana 5
Kudzu Bean
Pueraria montana lobata 6
purple crownvetch
Securigera varia 7
common broom
Cytisus scoparius 8
shrub lespedeza
Lespedeza bicolor 9
Chinese bushclover
Lespedeza cuneata 10
false indigo
Amorpha fruticosa 11
Japanese wisteria
Wisteria floribunda 12
Chinese wisteria
Wisteria sinensis 13
Jetbead
Rhodotypos scandens 14
Rosebud Cherry
Prunus subhirtella 15
Wineberry
Rubus phoenicolasius 16
Japanese Spiraea
Spiraea japonica 17
Indian strawberry
Potentilla indica 18
multiflora rose
Rosa multiflora 19
Callery pear
Pyrus calleryana 20
Glossy Buckthorn
Frangula alnus 21
common buckthorn
Rhamnus cathartica 22
Paper Mulberry
Broussonetia papyrifera 23
white mulberry
Morus alba 24
stinging nettle
Urtica dioica 25
Chinese elm
Ulmus parvifolia 26
Siberian elm
Ulmus pumila 27
Japanese Hop
Humulus japonicus 28
Russian olive
Elaeagnus angustifolia 29
thorny olive
Elaeagnus pungens 30
autumn olive
Elaeagnus umbellata 31
creeping Jenny
Lysimachia nummularia 32
Hardy kiwifruit
Actinidia arguta 33
Black Swallow-wort
Vincetoxicum nigrum 34
European swallow-wort
Vincetoxicum rossicum 32
Greater Periwinkle
Vinca major 35
Lesser Periwinkle
Vinca minor 36
mile-a-minute weed
Persicaria perfoliata 37
Japanese knotweed
Fallopia japonica 38
Giant Knotweed
Fallopia sachalinensis 39
common chickweed
Stellaria media 40
Alligator weed
Alternanthera philoxeroides 41
winged euonymus
Euonymus alatus 5
Wintercreeper
Euonymus fortunei 42
Oriental bittersweet
Celastrus orbiculatus 43
Canada Thistle
Cirsium arvense 44
Broad-winged Thistle
Carduus acanthoides 45
spotted knapweed
Centaurea stoebe micranthos 46
Common Cat's-ear
Hypochaeris radicata 47
Oriental false hawksbeard
Youngia japonica 48
meadow hawkweed
Pilosella caespitosa 10
giant ragweed
Ambrosia trifida 49
water fringe
Nymphoides peltata 50
Shining Crane's-bill
Geranium lucidum 51
Amur Corktree
Phellodendron amurense 52
Tree of heaven
Ailanthus altissima 53
field maple
Acer campestre 54
Amur Maple
Acer ginnala 55
Japanese maple
Acer palmatum 56
Norway maple
Acer platanoides 57
sycamore maple
Acer pseudoplatanus 58
Balloon Vine
Cardiospermum halicacabum 59
large-flowered primrose-willow
Ludwigia grandiflora 60
Floating Primrose-Willow
Ludwigia peploides glabrescens 61
water chestnut
Trapa natans 62
purple loosestrife
Lythrum salicaria 63
Sawtooth oak
Quercus acutissima 64
European Alder
Alnus glutinosa 32
Butterfly bush
Buddleja davidii 65
privets
Ligustrum 66
border privet
Ligustrum obtusifolium 67
garden privet
Ligustrum ovalifolium 68
Chinese privet
Ligustrum sinense 69
Common Privet
Ligustrum vulgare 70
beefsteak plant
Perilla frutescens 71
Beach Vitex
Vitex rotundifolia 12
yellow archangel
Lamium galeobdolon 72
ground-ivy
Glechoma hederacea 73
Indian Swampweed
Hygrophila polysperma 56
Mudmat
Glossostigma cleistanthum 74
princess tree
Paulownia tomentosa 75
Incised Fumewort
Corydalis incisa 76
lesser celandine
Ficaria verna 77
autumn clematis
Clematis terniflora 78
Heavenly bamboo
Nandina domestica 79
Japanese barberry
Berberis thunbergii 80
European barberry
Berberis vulgaris 81
leatherleaf mahonia
Mahonia bealei 82
Five-leaf akebia
Akebia quinata 83
Carolina horse-nettle
Solanum carolinense 49
tropical soda-apple
Solanum viarum 84
Water Morning Glory
Ipomoea aquatica 85
field bindweed
Convolvulus arvensis 86
Japanese Dodder
Cuscuta japonica 87
Japanese honeysuckle
Lonicera japonica 88
Amur honeysuckle
Lonicera maackii 89
Morrow's honeysuckle
Lonicera morrowii 90
Standish's Honeysuckle
Lonicera standishii 91
Tatarian honeysuckle
Lonicera tatarica 92
Fuller's teasel
Dipsacus fullonum 93
cutleaf teasel
Dipsacus laciniatus 29
linden viburnum
Viburnum dilatatum 94
Wayfaring-tree
Viburnum lantana 95
Japanese snowball
Viburnum plicatum 71
tea viburnum
Viburnum setigerum 96
Siebold's Viburnum
Viburnum sieboldii 97
Goutweed
Aegopodium podagraria 38
Giant Hogweed
Heracleum mantegazzianum 98
Five-fingered Aralia
Eleutherococcus sieboldianus 99
Castor-Aralia
Kalopanax septemlobus 100
Japanese angelica tree
Aralia elata 101
English Ivy
Hedera helix 102
Atlantic Ivy
Hedera hibernica 103
common hibiscus
Hibiscus syriacus 69
velvetleaf
Abutilon theophrasti 104
Carolina Fanwort
Cabomba caroliniana 105
crack willow
Salix ×fragilis 106
Chinese Tallow
Triadica sebifera 107
common St. John's-wort
Hypericum perforatum 108
hound's-tongue
Cynoglossum officinale 109
puncture vine
Tribulus terrestris 110
broadleaved pepperweed
Lepidium latifolium 111
dame's rocket
Hesperis matronalis 112
narrow-leaved bittercress
Cardamine impatiens 113
Watercress
Nasturtium officinale 114
Garlic Mustard
Alliaria petiolata 115
Japanese-spurge
Pachysandra terminalis 116
Parrot's Feather
Myriophyllum aquaticum 117
Broadleaf Water-milfoil
Myriophyllum heterophyllum 118
Eurasian Water-Milfoil
Myriophyllum spicatum 119
Porcelain Berry
Ampelopsis glandulosa brevipedunculata 120
Rough-Seed Bulrush
Schoenoplectus mucronatus 121
Japanese Sedge
Carex kobomugi 122
Japanese Stiltgrass
Microstegium vimineum 38
Chinese Silver Grass
Miscanthus sinensis 123
Small Carpetgrass
Arthraxon hispidus 124
Itchgrass
Rottboellia cochinchinensis 125
Wavyleaf Basketgrass
Oplismenus undulatifolius 126
Bambusa
Bambusa 127
Golden Bamboo
Bambusa vulgaris 128
Arrow Bamboo
Pseudosasa japonica 126
Pygmy Bamboo
Pleioblastus fortunei 129
Fishpole Bamboo
Phyllostachys aurea 107
Yellow Groove Bamboo
Phyllostachys aureosulcata 130
Giant Timber Bamboo
Phyllostachys bambusoides 131
Giant Foxtail
Setaria faberi 132
Bent Grass
Agrostis 133
Velvet Bent
Agrostis canina 134
Colonial Bent
Agrostis capillaris 135
Annual Meadow-grass
Poa annua 73
Rough Meadow-grass
Poa trivialis 136
Thunberg's Brome
Bromus japonicus 6
Drooping Brome
Bromus tectorum 6
Quack Grass
Elymus repens 6
Yorkshire Fog
Holcus lanatus 28
African Love Grass
Eragrostis curvula 137
Tall Fescue
Festuca arundinacea 138
Meadow Fescue
Festuca pratensis 139
Reed Canary Grass
Phalaris arundinacea 140
Timothy
Phleum pratense 141
Bermuda Grass
Cynodon dactylon 3
Sorghum
Sorghum bicolor 142
Johnson Grass
Sorghum halepense 138
Reed Meadowgrass
Glyceria maxima 143
Giant Reed
Arundo donax 144
Common Reed
Phragmites australis 145
Goose Grass
Eleusine indica 146
Cogon Grass
Imperata cylindrica 147
Ravenna Grass
Saccharum ravennae 6
Narrow-leaved Cattail
Typha angustifolia 148
Hybrid Bulrush
Typha × glauca 149
Broad-leaved Helleborine
Epipactis helleborine 150
Spanish Bluebell
Hyacinthoides hispanica 151
Drooping Star-of-Bethlehem
Ornithogalum nutans 152
Common Star-of-Bethlehem
Ornithogalum umbellatum 153
Yellow Iris
Iris pseudacorus 154
Wild Garlic
Allium canadense 146
Onion Grass
Allium vineale 155
Summer Snowflake
Leucojum aestivum 73
Orange Day-lily
Hemerocallis fulva 156
Italian Arum
Arum italicum 80
Brazilian Waterweed
Egeria densa 5
Hydrilla
Hydrilla verticillata 157
Brittle Naiad
Najas minor 158
European Frog-bit
Hydrocharis morsus-ranae 159
Crisp-leaved Pondweed
Potamogeton crispus 160
Marsh Dewflower
Murdannia keisak 161
Anchored Water Hyacinth
Eichhornia azurea 162
Common Water Hyacinth
Eichhornia crassipes 163
Dioscorea oppositifolia
Dioscorea oppositifolia 164
Chinese Yam
Dioscorea polystachya 100
Sweet-Flag
Acorus calamus 29
Feather Caulerpa
Caulerpa taxifolia 125
Gracilaria vermiculophylla
Gracilaria vermiculophylla 28
Photos:
  • 1. (c) 素珍 徐, some rights reserved (CC BY-NC-ND)
  • 2. (c) Laura Clark, some rights reserved (CC BY), uploaded by Laura Clark
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