LISTS: Invasive plants of Texas ONLINE DATABASE(

The database includes 137 species known to occur in or around Texas and known or suspected to cause ecological problems.For each species there is an illustrated plant description, ecological information, distribution & habitat, history of introduction, reproduction, management approaches, and other useful information.††


Prohibited Exotic Species (Texas Parks & Wildlife Department)
"In order to manage and conserve our natural resources, Texas Parks and Wildlife Department must protect our state waters against the introduction of non-native aquatic species.Fish, shellfish, and aquatic plants that are not native to Texas may compete with native animals and plants for food and space.The organisms listed on this page are legally classified as exotic, harmful, or potentially harmful.No person may import, possess, sell, or place them into water of this state except as authorized by rule or permit issued by the department."All are aquatic plants.[List downloaded 3 Feb 2008.All taxa included in the TexasInvasives.Org database.]

* Alternanthera philoxeroides
†† Alligatorweed†††

* Eichhornia crassipes†† Floating waterhyacinth
* Eichhornia azurea†† Rooted waterhyacinth
* Hydrilla verticillata†† Hydrilla
* Ipomoea aquatica†† Water Spinach
* Lagarosiphon majorLagarosiphon
* Landoltia punctata (= Spirodela oligorhiza) Giant Duckweed
* Limnophila sessiliflora†† Ambulia
* Lythrum salicaria†† Purple Loosestrife
* Melaleuca quinquenervia†† Paperbark
* Monochoria hastata†† Narrowleaf False Pickerelweed
* Monochoria vaginalis†† Heartshaped False Pickerelweed
* Myriophyllum spicatum†† Eurasian Watermilfoil
* Ottelia alismoides†† Duck-lettuce
* Panicum repens†† Torpedograss
* Pistia stratiotes†† Waterlettuce
* Salvinia all species†† Salvinia
* Schinus terebinthifolius†† Brazilian Peppertree
* Solanum tampicense†† Wetland Nightshade
* Sparganium erectum†† Exotic Bur-reed


Noxious Plants List ††(Texas Department of Agriculture; as shown on the USDA PLANTS site)
Texas Administrative Code.2005.Quarantines and noxious plants, Chapter 19 (24 May 2006).State of Texas. [List downloaded 3 Feb 2008.All taxa included in the TexasInvasives.Org database.]

* Alhagi
maurorum†† Camelthorn
* Alternanthera philoxeroides†† Alligatorweed
* Arundo donax†† Giant reed [Poaceae]
* Calystegia sepium†† Hedge bindweed
* Cardiospermum halicacabum†† Balloonvine
* Convolvulus arvensis†† Field bindweed
* Cuscuta japonica†† Japanese dodder
* Eichhornia azurea†† Rooted waterhyacinth
* Eichhornia crassipes†† Floating water hyacinth
* Hydrilla verticillata†† Hydrilla
* Ipomoea aquatica†† Water spinach
* Lagarosiphon major†† Lagarosiphon
* Landoltia punctata (= Spirodela oligorrhiza)†† Giant duckweed
* Lythrum salicaria†† Purple loosestrife
* Melaleuca quinquenervia†† Paperbark
* Myriophyllum spicatum†† Eurasian watermilfoil
* Nassella trichotoma†† Serrated tussock
* Orobanche ramosa†† Branched broomrape
* Panicum repens†† Torpedograss
* Pistia stratiotes†† Waterlettuce
* Pueraria montana var. lobata†† Kudzu
* Rottboellia cochinchinensis†† Itchgrass
* Salvinia all species††† Salvinia
* Schinus terebinthifolius†† Brazilian peppertree
* Solanum viarum†† Tropical soda apple
* Tamarix spp.Saltcedar
* Triadica sebifera†† Chinese tallow tree


Prohibited Plant Species (North Texas Water Garden Society)


Alternanthera philoxeroides

Eichhornia azurea

Eichhornia crassipes

Hydrilla verticillata

Ipomoea aquatica

Lagarosiphon major

Melaleuca quinquenervia

Myriophyllum spicatum

Panicum repens

Pistia stratiotes

Salvinia - all species

Spirodela oligorhiza


Invasive Plants to Avoid (City of Austin)

A useful site, with information and photos for the unwanted species and suggestions for non-invasive alternatives.


Ailanthus altissima†† Tree of Heaven

Albizia julibrissinMimosa

Alocasia spp.Elephant Ear

Arundo donaxGiant Cane

Broussonetia papyriferaPaper Mulberry

Colocasia spp.Elephant Ear

Cyrtomium falcatum†† Holly Fern

Elaeagnus angustifoliaRussian Olive

Firmiana simplexChinese Parasol Tree

Hedera helix†† English Ivy

Ligustrum japonicumJapanese Privet

Ligustrum lucidumGlossy Privet

Ligustrum sinenseChinese Privet

Ligustrum vulgareCommon Privet

Lonicera japonicaJapanese Honeysuckle

Macfadyena unguis-catiCatís Claw Vine

Melia azedarachChinaberry

Morus albaWhite Mulberry

Nandina domesticaNandina

Photinia spp.Photinia

Phyllostachys aureaRunning Bamboo

Pistacia chinesisChinese Pistacio

Pueraria lobata†† Kudzu

Pyracantha spp.Pyracantha

Sapium sebiferum†† Chinese Tallow

Tamarix spp.Salt Cedar

Vinca majorVinca

Vinca minorVinca

Wisteria sinensisWisteria

Wisteria floribundaWisteria


Unwanted Alien Plants on the Door Step of Texas†† (Texas Forest Service)
Photos and a brief overview of biology for 12 non-native noxious plants threatening Texas.††

* Ampelopsis brevipedunculata
Porcelain Berry [Vitaceae]
* Celastrus orbiculatus
Oriental Bittersweet[Celastraceae]
* Cuscuta japonica
Giant Asian Dodder[Cuscutaceae]
* Dioscorea bulbifera
Climbing Yam[Dioscoreaceae]
* Imperata cylindrica
* Lygodium japonicum
Japanese Climbing Fern[Lygodiaceae]
* Microstegium vinimeum
Nepalese Browntop[Poaceae]
* Miscanthus sinensis
Chinese Silvergrass[Poaceae]
* Polygonum cuspidatum
Japanese Knotweed[Polygonaceae]
* Pueraria montana
* Rosa multiflora
Multiflora Rose[Rosaceae]
* Solanum viarumTropical Soda Apple[Solanaceae]


Federal Noxious Weed List†† (US Dept. of Agriculture, as of June 30, 2006)
List of 164 taxa, divided into three categories: Aquatic/Wetland, Parasitic, Terrestrial.Most native North American species of Cuscuta are included (probably in an attempt to list them all), but they are neither invasive nor noxious.These are listed at the national level.