Like all evergreens, the ivy is immortality and eternal life; it is also revelry; clinging dependence; attachment; constant affection; friendship.
Christian: Everlasting life; death and immortality; fidelity.
Egyptian: ‘The plant of Osiris’, immortality.
Greek: Sacred to Dionysos who is crowned with ivy and whose cup is an 'ivy cup’; his thyrsus is encircled with ivy and one of his emblems is a post sprouting ivy leaves.
Semetic: Sacred to the Phrygian Attis; immortality. The ivy-leaf is phallic, depicting the male trinity.
[Source: An Illustrated Encyclopedia of Traditional Symbols by J.C. Cooper]