Lithodora diffusa Plant Data Family Name: Boraginaceae Common Name: blue lithospermum Other Name(s): Lithodora diffusa Hardiness Zones: Zone 5: (-29 to -23 C) Pest: Mites, Fruit Color: Brown, Flowering Time: Apr, May, Jun, Jul, Aug, Flowering Color: Blue, Leaf Form: Simple, Leaf Arrangement: Alternate, Leaf Shape: Elliptic, Linear, Oblong, PlantSomething BC Garden Centre Listings No members have selected this plant.