Apply aluminum sulphate around the base of hydrangeas to keep them blue; for pink blooms use dolomite lime.
Continue deadheading annuals and tidying up perennial borders as plants finish flowering.
Sow green manure crops of fall rye or legume mix in vegetable beds.
Give hedges a final trimming before winter.
Excellent time to reseed and renovate an uneven lawn or install a new one using turf or seed.
Check out flowering ornamental grasses, Miscanthus (Maiden Grass), Panicum (Blue Switch Grass) and Stipa (Feather Grass) are at their peak this month.