noun which may take the genitive case particle 'no', noun
double-flowered
Botanical term describing flowers with extra petals, often due to mutation or cultivation. Used attributively with の.
See also: 単弁
この桜は重弁の花を咲かせる品種です。
This cherry tree is a variety that produces double-flowered blossoms.
重弁のバラは華やかな印象を与える。
Double-flowered roses give a gorgeous impression.
単弁 means single-flowered (normal petal count), the opposite of 重弁.
Compound of 重 (じゅう, 'double; multiple') and 弁 (べん, 'petal'), a straightforward kanji-based term for double-flowered plants.