annual sow thistle
asteraceae
bitter
bloom
blooming
blossom
botanic
botanical flowers
botany
buzzer
cardus marianus
closeup
field
flora
floral
flower
garden
gardening
green
herbal
leaf
macro photography
meadow
medicinal
natural
nature
outdoor
plans
silybum marianum
smooth sow thistle
sonchus arvensis
sowthistle
thistle
thistle flower
thorn
wild flowers
wildflower