a bristle thistle bud with spikey green and red leaves

armor beautiful biodiversity bloom blossom bright bristle bud buds closeup danger dangerous diagonal flatwood flower focus green growth hot image invasive landscape leaf leaves louisiana macro meadow native natural nature pest pink plant pointy red red-edged selective sharp species spikes spikey spring springtime thistle thorns two wetland wild wildflower habitat environment ecology ecosystem conservation food source pine savanna