detail of sick orchid nursery contaminated with fungi and bacteria. black spot disease or rot bract leaf axils and visible

plague damaged isolated fungicide orchidaceous background death rot disease green growth fungal stem illness damage flowerpot gardening leaf black spot flora botanical floral bud diseases rusty orchids growing spread orchid branch phalaenopsis macro copy space symptom plant fungus nature florist control symptoms gardener orchidaceae orchidea injury epidemic botany detail sick orchid nursery contaminated fungi bacteria rot bract axils visible pseudo bulbs