acanthus bristlethistle thickets

impenetrable thickets great ant thorny plant acanthus bristlethistle carduus uncinatus long term fallow real military obstacle thistle chivalry musk thoermeri nutans crimea kerch peninsula agrestal blooming blossom canada couch grass drawk field weed flora forb meadow forbs harmful herb hogweed ill vegetation persistent scenery sowthistle string pearls tare tares undesirable watch pleasure weak wind weedage weedery steppe ledge alien weeds land