The following list of common weeds highlights the type of damage weeds cause to healthy plants.
|
Common weed name |
Pest or disease hosted by weed |
Scientific name of pest or disease |
Damage caused to healthy plants |
|
Ragwort |
Flea Beetle |
Longitarsus flavicornis |
Destroys roots |
|
Flea Beetle |
Longitarsus jacobaeae |
Destroys roots |
|
|
Crown Boring Moth |
Cochylis atricapitana |
Bores into root crown |
|
|
Cinnabar Moth |
Tyria jacobaeae |
Defoliates plant |
|
|
Slender thistles |
Rust Fungus |
Puccinia cardui-pycnocephali |
Infects leaves and stems |
|
Spear thistle |
Receptacle Weevil strain |
Rhinocyllus conicus |
Destroys developing seeds |
|
Gall Fly |
Urophora stylata |
Galls flower heads |
|
|
Variegated Thistle |
Receptacle Weevil strain |
Rhinocyllus conicus |
Destroys developing seeds |
|
Scotch/Illyrian/ Stemless Thistles |
Onopordum Seed Weevil |
Larinus latus |
Destroys developing seeds |
|
Paterson's Curse |
Crown Boring Weevil |
Mogulones larvatus |
Destroys crowns |
|
Root Boring Weevil |
Mogulones geographicus |
Destroys roots |
|
|
Boneseed/Bitou Bush |
Bitou Tip Moth |
Comostolopsis germana |
Feeds on growing tips |
|
Black Boneseed Beetle |
Chrysolina progressa |
Defoliates plants |
|
|
Tortoise Beetle |
Defoliates plants |
||
|
Horehound |
Plume moth |
Pterophorus spilodactylus |
Defoliates plants |
|
St. John's Wort |
Mite |
Aculus hyperici |
Stunts growth |
|
English Broom |
Twig Mining Moth |
Leucoptera spartifoliella |
Destroys new growth |
|
Common Prickly Pear |
Cochyneal |
Dactylopius opuntiae |
Destroys all aerial parts |