greening
From Longman Dictionary of Contemporary Englishgreeninggreen‧ing /ˈɡriːnɪŋ/ noun → the greening of somebody/somethingExamples from the Corpusgreening• And this poverty needs correcting or greening will translate into more domination.• They involve a variety of practical conservation activities - energy-saving, waste recycling and the greening of derelict land.• Your help in achieving the environmental objectives is vital in ensuring the greening of the whole Company.