LIlacs are a genus of 12 currently recognized species of flowering woody plants in the olive family.

They are native to woodland and scrub from southeastern Europe to eastern Asia.

Lilacs are widely and commonly cultivated in temperate areas elsewhere.

They are popular shrubs in parks and gardens throughout the temperate zone, and several hybrids and numerous cultivars have been developed.

This includes copper underwing, scalloped oak and Svensson’s copper underwing.

Lilacs are often considered to symbolize love. (source)

So can guinea pigs eat lilacs at all?

Unfortunately they are poisonous for piggies to eat and should be avoided as a food for them.