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.
Steel blue spring and summer foliage is topped by nicely contrasting tan colored airy panicles in late summer and fall. In fall the foliage changes to yellow and finally beige creating winter interest and providing food, habitat, and nesting material for a variety of birds and other fauna. Gunsmoke is a selection of our native Switchgrass, Panicum virgatum, with an initially upright to vase shaped habit becoming rounded once flowering begins. This is a naturally clump-forming herbaceous perennial that is found throughout much of the US and into Canada, except for the westernmost states, and is a major component of the Tall Grass Prairies. Switchgrass was also used by native Americans to build long-lasting, rain resistant shelters. The foliage is a larval host to the Delaware Skipper and Dotted Skippers. Adaptable to a wide variety of soil types and moisture regimes. Images courtesy of Walter's Gardens, Inc., all rights reserved. Item# 12305