Answer: shootsup

AnswerCrossword Clue
SHOOTSUPMushrooms.
SHOOTSUPRises rapidly
SHOOTSUPRiddles with bullets
SHOOTSUPIs rapidly promoted
SHOOTSUPGoes through the roof
SHOOTSUPComes in with guns blazing
SHOOTSUPExperiences a growth spurt