Answer: regrow

AnswerCrossword Clue
REGROWCultivate again
REGROWBring back, as a mustache
REGROWSprout again
REGROWCultivate a new crop.
REGROWWhat mown lawns do
REGROWVerb in Rogaine ads
REGROWCultivate with Rogaine, hopefully
regrowto grow (as a missing part) anew
regrowcontinue growth after interruption or injury
regrowto grow again