GEOGRAPHICAL DISTRIBUTION OR ORIGIN:
P. incarnata x P. caerulea.
Horticultural selection of P. x colvillii Sweet.
MINIMUM TEMPERATURE: -10 °C
IDEAL MINIMUM TEMPERATURE: 0 °C
NOTES: Selection of large flowers (11 cm). For this reason I decided to call it 'Grandiflora'
I found this clone of P. x colvillii in 2004 in a tourist village in Corsica where I was on vacation, and I multiplied and spread it.
Unlike other similar hybrids, it has very big flowers, cm 10/11. I do not know neither the author nor the origin.