Ivy, being an evergreen plant, represents eternity, fidelity, remembrance and strong affectionate attachment, such as wedded love and friendship.
Another association of ivy as an evergreen, is perennial life and immortality. It also may represent dependence and attachment, which can be seen in the way it climbs trees and buildings to get sunlight.
The hug (symbiotic relationship) between ivy and its support is a symbol of friendship and fidelity.
The ivy leaf is also phallic, depicting the male Trinity, but it can also be a female symbol denoting a force in need of protection. Conversely, however, its malevolent poison feature means it can also symbolise ingratitude. Other meanings include dedication and eternal life; friendship; remembrance