Ivy

Ivy is a climbing plant that appears minimally in the How to Train Your Dragon Franchise.

Description
Ivy, also called Hedera, is an evergreen plant of the family Araliaceae. It is a climbing plant, meaning that it uses trees, rocks or man-made walls as support. If it doesn't have anything it can cling onto, it ground-creeps only a few centimetres long.

The ivy seen in the franchise is the Common Ivy (Hedera helix). It prefers non-reflective, darker and rough surfaces with near-neutral pH. It originates from Europe, western Asia and northern Africa.

Function
In both franchise and real life, ivy is used for ornamental purposes.

Some species in real life are invasive, being spread too much by the humans.

Dragons: Rise of Berk
Ivy is seen minimally in this game, surrounding dragon platforms, such as Wise Wind's.