This green leaf sport of H. 'Sum
and Substance' was registered by
Inc. of Michigan in 1997. It forms a large size mound of medium green colored foliage
and has lavender flowers in later summer.
The Hostapedia by Mark Zilis (2009), "The foliage on 'Green Gables' is a lighter green
than that of 'Vim and Vigor',
another Walters Gardens green-leaved sport of 'Sum and
cultivars include H. 'Domaine
de Courson', H. 'Grand Total', H. 'Irish Hills' and H. 'Sum Piecrust'.