noun
Obon flower; flower for welcoming ancestral spirits during Obon
Refers to flowers placed on a special shelf (盆棚) to welcome the spirits of ancestors during the Obon festival. Typically seasonal flowers like chrysanthemums or bellflowers are used.
See also: お盆
お盆には盆花を飾って先祖の霊をお迎えします。
During Obon, we display Obon flowers to welcome the spirits of our ancestors.
お盆 is the Obon festival itself, while 盆花 specifically refers to the flowers used during the festival.
Compound of 盆 (ぼん, Obon festival) and 花 (はな, flower), with rendaku voicing of はな to ばな.