hothouse flower cultivation; greenhouse forcing
Refers to the practice of growing flowers in a greenhouse or hothouse, often to force them to bloom out of season.
室咲きの花は冬でも市場に出回る。
Hothouse-grown flowers are available on the market even in winter.
Compound of 室 (muro, 'greenhouse, hothouse') and 咲き (saki, 'blooming', from 咲く). The reading むろざき reflects rendaku voicing of さき to ざき.