agricultural field
alertness
analyzing
attention
bacterium
botanical
botany
check
checking
clover
clover leaf shape
cloverleaf
concept
concepts
dead
disease
environment
environmental damage
field
floral
flowerbed
focus
foliage
freshness
fungus
garden
gardening
grass
grass area
grassland
herb
ideas
illness
infection
infectious disease
lawn
lawn and garden
leaf
magnifying glass
meadow
natural
natures
plant
protection
research
safety
searching
shamrock
studying
trefoil
turf
virus
wildflower