Ceanothus ‘Frosty Blue’, Frosty Blue Lilac

Ceanothus ‘Frosty Blue’ is an evergreen mountain lilac that reaches to 6′-8′ tall and up to 8′ wide. Fast growing, it can mature in 18 months and can be trained into a small tree or even espaliered. Flowers appear in early spring and are medium blue with a frosted appearance, hence the name. Frosty Blue is one of the most adaptable of the lilacs. It tolerates almost any soil type including heavy clay and sandy soil and likes both sun or light shade. Heat, drought and frost tolerant to degrees F. The primary requirements for garden success is a well-drained soil and a light watering hand. If in clay, make sure it does not get waterlogged. Once established, Frosty Blue will survive on rainfall alone in coastal gardens where it’s tolerant of both wind and salt spray. This is an easy hedge plant, small screen, or focal plant in a drought tolerant garden. Like all ceanothus, Frosty Blue is a valuable nectar source for many butterflies, bees and other insects. Deer will browse it.

It is most likely a hybrid of Ceanothus impressus x Ceanothus thyrsiflorus var. griseus.