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Numerous non-native plants have been introduced to Texas in the United States and many of them have become invasive species. The following is a list of some non-native invasive plant species established in Texas. [1] [2] [3] [4]
Tussock paspalum (P. quadrifarium) is considered a noxious weed in Australia. [13] The term “paspalum” without qualification in Australia refers to the common lawn weed P. dilatatum. [14] Australia has five native [a] and approximately sixteen naturalised species. [15]
Most are native to Europe, Asia, and North Africa, but Prunella vulgaris (common self-heal) is Holarctic in distribution, occurring in North America as well, and is a common lawn weed. Prunellas are low-growing plants, and thrive in moist wasteland and grass, spreading rapidly to cover the ground.
They are annual plants, and one plant is capable of producing 150,000 seeds per season. The seeds germinate in the late spring and early summer and outcompete the domesticated lawn grasses, expanding outward in a circle up to 30 cm (12 in) in diameter. In the autumn when the plants die, they leave large voids in the lawn.
In the United States, Johnson grass is listed as either a noxious or quarantined weed in 19 states. [6] With Sorghum bicolor it is a parent of Sorghum × almum, a forage crop also considered a weed in places. [7] It is named after an Alabama plantation owner, Colonel William Johnson, who sowed its seeds on river-bottom farm land circa 1840. The ...
Bindi weed can be manually removed by pulling it out at the root, usually when it's grown big, and started to flower, and before seeding—especially after rain when the ground is softer. A hand tool that pinches the tap root and enables some leverage while getting in under the central core is the best method. Bindi can be treated with ...