Perennials Over 4'H
The very tallest perennials that commonly exceed 4 feet high under most conditions. These very tall, often statement making perennials are well suited to use at the back of the border and in front of medium to large shrubs and taller tree form plants. Some may be suitable for large to very large containers as specimens and thrillers. Growing conditions may affect ultimate size. This list also includes some tropicals/subtropicals that are grown as die-back perennials in zone 8B/9A like Angel's Trumpets, so just keep that in mind if you are in a colder climate.
Grown mainly for its large aromatic heart-shaped tropical foliage that produce a strong root beer-like fragrance when crushed along with contrasting narrow creamy white arching 'flowers' in the form of a 'spadix'. The Rootbeer Tree, Piper auritum, is a vigorous, naturally evergreen, shrub-like herbaceous tropical that can be grown as a die-back perennial into zone 8. In the garden and landscape it can spread aggressively and invasively, like some mints, via fleshy white underground rhizomes and can be difficult to eradicate once well established. It is generally easiest to contain when grown as a container plant that is not in contact with soil below it. The Rootbeer Tree is widely used as an herb in Meso-American cultures like Oaxacan. It can be used fresh or dried to flavor soups, eggs, drinks and is an essential ingredient in Mole Verde. Item# 789