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.
Dense spikes of golden yellow flowers cover the upper 2/3's of this plant for an extended period beginning in mid to late summer and continuing into fall. Seaside Goldenrod is a clump forming native perennial common in coastal areas whose nectar rich flowers provide a much needed food source to fall migrating Monarch butterflies along with other butterflies, bees, and many garden beneficials. Deep green smooth foliage adorns the stems. This is a salt tolerant species that is more compact in poor and salt laden soils but in rich garden soil it is known to reach 6-8' high. Pinching out the growing tips in late spring will help to create a fuller more compact plant. Provide a full to mostly sunny location but it is otherwise adaptable to a wide variety of soil types from wet clay to sand. Item# 11627