To see lilac in your dream indicates disappointments and rejection. It also wanrs that you should not always rely on what you see or hear.
The fragrance of lilac indicates budding love and romantic feelings.
A wilted lilac bush: a wonderful love affair is ending in disappointment. Picking lilacs means someone is admiring you.
Depth Psychology: This fragrant flower is a sign of budding love; it is also a symbol of romance and the need for affection and tenderness.... Dreamers Dictionary