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Quiet Invasion: Invasive Plants & Animals of the Houston Galveston Region & Upper Texas Coast

The species listed in this field guide are identified by the Houston Advanced Research Center (HARCresearch.org) as current or potential invasive species (plants and animals) in the Houston-Galveston region, Lower Galveston Bay Watershed and Upper Texas Coast. For more information, visit ...more ↓

All 111
Invasive or native
Invasive 111

air potato ¹
Dioscorea bulbifera

Alligator weed ²
Alternanthera philoxeroides

Italian Ryegrass ³
Lolium multiflorum

Bahia grass ⁴
Paspalum notatum

Balloon Vine ⁵
Cardiospermum halicacabum

Brazilian pepper tree ⁶
Schinus terebinthifolius

Brazilian Vervain ⁷
Verbena brasiliensis

Bushkiller ⁸
Cayratia japonica

Castor Oil Plant ⁹
Ricinus communis

Chinaberry ¹⁰
Melia azedarach

Chinese Elm ¹¹
Ulmus parvifolia

Chinese privet ¹²
Ligustrum sinense

Japanese Privet ¹³
Ligustrum japonicum

Quihoui privet ¹⁴
Ligustrum quihoui

Glossy Privet ¹⁵
Ligustrum lucidum

Chinese Tallow ¹⁶
Triadica sebifera

Chinese wisteria ¹⁷
Wisteria sinensis

Cogon Grass ¹⁸
Imperata cylindrica

Common Water Hyacinth ¹⁹
Eichhornia crassipes

anchored water hyacinth ²⁰
Eichhornia azurea

Deep-Rooted Sedge ²¹
Cyperus entrerianus

Taro ²²
Colocasia esculenta

Eurasian Water-milfoil ²³
Myriophyllum spicatum

Spirodela oligorrhiza

giant reed ³
Arundo donax

fishpole bamboo ¹⁶
Phyllostachys aurea

goldenrain tree ²⁴
Koelreuteria paniculata

guinea grass ²⁵
Urochloa maxima

Hedge Bindweed ²⁶
Calystegia sepium

Hydrilla ²⁷
Hydrilla verticillata

Japanese Climbing Fern ²⁸
Lygodium japonicum

Cuscuta japonica ²⁹

Japanese honeysuckle ³⁰
Lonicera japonica

Johnson grass ³¹
Sorghum halepense

Sheda Grass ³
Dichanthium annulatum

Angleton Bluestem ³²
Dichanthium aristatum

Bothriochloa ischaemum var. songarica
Bothriochloa ischaemum songarica

Kudzu ³³
Pueraria montana

common lantana ³⁴
Lantana camara

Lilac chaste tree ¹¹
Vitex agnus-castus

Macartney's rose ³⁵
Rosa bracteata

Broad-leaved Paperbark ¹⁵
Melaleuca quinquenervia

Persian Silk Tree ³⁶
Albizia julibrissin

multiflora rose ³⁷
Rosa multiflora

Heavenly bamboo ¹²
Nandina domestica

Climbing Maidenhair ¹
Lygodium microphyllum

Pampas Grass ³⁸
Cortaderia selloana

Purple-loosestrife ³⁹
Lythrum salicaria

scarlet sesban ⁴⁰
Sesbania punicea

saltcedar ⁴¹
Tamarix ramosissima

Nassella Tussock ⁴²
Nassella trichotoma

Torpedo grass ⁴³
Panicum repens

tree of heaven ⁴⁴
Ailanthus altissima

Poncirus trifoliata ⁴⁵
Citrus trifoliata

Tropical Soda-Apple ⁴⁶
Solanum viarum

Vasey Grass ⁴⁷
Paspalum urvillei

Water Lettuce ⁴⁸
Pistia stratiotes

Edited by Lisa Gonzalez and HARC-Houston Advanced Research Center, some rights reserved (CC BY-SA)

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46. (c) J. Jeffrey Mullahey, University of Florida, Bugwood.org, some rights reserved (CC BY)
47. (c) Bart Wursten, some rights reserved (CC BY-NC)
48. (c) Mary Keim, some rights reserved (CC BY-NC-SA)

Quiet Invasion: Invasive Plants & Animals of the Houston Galveston Region & Upper Texas Coast

air potato 1 Dioscorea bulbifera

Alligator weed 2 Alternanthera philoxeroides

Italian Ryegrass 3 Lolium multiflorum

Bahia grass 4 Paspalum notatum

Balloon Vine 5 Cardiospermum halicacabum

Brazilian pepper tree 6 Schinus terebinthifolius

Brazilian Vervain 7 Verbena brasiliensis

Bushkiller 8 Cayratia japonica

Castor Oil Plant 9 Ricinus communis

Chinaberry 10 Melia azedarach

Chinese Elm 11 Ulmus parvifolia

Chinese privet 12 Ligustrum sinense

Japanese Privet 13 Ligustrum japonicum

Quihoui privet 14 Ligustrum quihoui

Glossy Privet 15 Ligustrum lucidum

Chinese Tallow 16 Triadica sebifera

Chinese wisteria 17 Wisteria sinensis

Cogon Grass 18 Imperata cylindrica

Common Water Hyacinth 19 Eichhornia crassipes

anchored water hyacinth 20 Eichhornia azurea

Deep-Rooted Sedge 21 Cyperus entrerianus

Taro 22 Colocasia esculenta

Eurasian Water-milfoil 23 Myriophyllum spicatum

Spirodela oligorrhiza

giant reed 3 Arundo donax

fishpole bamboo 16 Phyllostachys aurea

goldenrain tree 24 Koelreuteria paniculata

guinea grass 25 Urochloa maxima

Hedge Bindweed 26 Calystegia sepium

Hydrilla 27 Hydrilla verticillata

Japanese Climbing Fern 28 Lygodium japonicum

Cuscuta japonica 29

Japanese honeysuckle 30 Lonicera japonica

Johnson grass 31 Sorghum halepense

Sheda Grass 3 Dichanthium annulatum

Angleton Bluestem 32 Dichanthium aristatum

Bothriochloa ischaemum var. songarica Bothriochloa ischaemum songarica

Kudzu 33 Pueraria montana

common lantana 34 Lantana camara

Lilac chaste tree 11 Vitex agnus-castus

Macartney's rose 35 Rosa bracteata

Broad-leaved Paperbark 15 Melaleuca quinquenervia

Persian Silk Tree 36 Albizia julibrissin

multiflora rose 37 Rosa multiflora

Heavenly bamboo 12 Nandina domestica

Climbing Maidenhair 1 Lygodium microphyllum

Pampas Grass 38 Cortaderia selloana

Purple-loosestrife 39 Lythrum salicaria

scarlet sesban 40 Sesbania punicea

saltcedar 41 Tamarix ramosissima

Nassella Tussock 42 Nassella trichotoma

Torpedo grass 43 Panicum repens

tree of heaven 44 Ailanthus altissima

Poncirus trifoliata 45 Citrus trifoliata

Tropical Soda-Apple 46 Solanum viarum

Vasey Grass 47 Paspalum urvillei

Water Lettuce 48 Pistia stratiotes