bulb of hippeastrum (amaryllis) with traces of stagonosporosis

agriculture amaryllidaceae amaryllis autumn beautiful blade botany bulb bulbous burn closeup cultivated delicate disease floral flower garden gardening gray growing hippeastrum hobby home horticulture hybrid infestation lily lush marker meliloti mold nature one onions ornamental plant red root roots season seasonal shaft stagonospora stagonosporosis table tag traces tuber