These taller perennials usually remain in the 3 to 4 feet high range under most conditions. Use them behind and among low to medium height growing perennials, as specimen plants, near the middle to the back of border, in front of medium and large shrubs and very tall perennials, and around larger tree form plants. Some of these will make nice container specimens and when used in combinations for large and very large containers. Growing conditions may affect the plant's ultimate size. This list may also include some tropicals that are grown as die-back perennials in zone 8B so just keep that in mind if you are in a colder climate.
A continuous display of brown-eyed golden-rayed daisy-like flowers are produced from early to midsummer into fall on well-branched plants with deep bronzy green hairy foliage. The Brown-eyed Susan, Rudbeckia triloba, is very similar in all regards to the wild forms of the Black-Eyed Susan, Rudbeckia hirta, and it begins flowering about the time that the latter species is finished for the year. This biennial to short-lived perennial is a heat tolerant, sun-loving, deer and rabbit resistant native well-suited to both the garden and landscape as well as in naturalistic settings like prairies, meadows, and roadside plantings. It readily reseeds on exposed soils but is not aggressive or difficult to control. It prefers a full to mostly sunny position in well-drained, average moist to semi-dry soils. The flowers of the Brown-Eyed Susan offer pollen and nectar to bees, smaller butterflies, and other garden beneficials. The seeds offer food for songbirds and small mammals. Item# 11725