What is the best tall perennial plant?
Rudbeckia ‘herbstonne’ is also a favorite in my garden – a great, long-blooming anchor perennial. Another good tall rudbeckia is r. susan). Top choices include geranium rozanne, one of the longest flowering perennials, and erigeron karvinskianushelle, which fills gaps and spills softly over edges. Helleborus orientalis brings early colour in winter, while echinacea magnus and rudbeckia goldsturm offer bright summer blooms with almost no care required.Some of the best include Geranium Rozanne, famous for its incredibly long flowering season, and Salvia Caradonna, which blooms early and often. Gaura Whirling Butterflies, Verbena bonariensis, Scabiosa Butterfly Blue and Nepeta Six Hills Giant also flower for much of the summer.Flowers That Thrive When Planted in August Marigolds – Fast-growing and heat-tolerant, perfect for late summer color. Zinnias – Bloom quickly and attract butterflies well into fall. Coneflowers – Hardy perennials that handle heat and drought. Black-eyed Susans – Bright yellow blooms that thrive in full sun.