Verbena bonariensis. Herbaceous perennial. Plant in full sun in well-drained soil. Flowers in summer and autumn.
Acanthus spinosus is an herbaceous perennial. There are other species but this is my favourite as I prefer it's more dissected, thistle-like leaves. A mature clump in flower is an impressive site. Scroll down this board for further details.
Monarda 'Cambridge Scarlet'. herbaceous perennial
How to create a perennial flower garden border - walled garden border
Peonies in a herbaceous border. Jorge Salcedo/Shutterstock.com
Geranium himalayense 'Birch Double' Geranium himalayense 'Plenum', Hardy Geranium, Cranesbill Hardy Perennial
One of our favorite shade perennials is now blooming! Tiarella has unique foliage and looks stunning while in bloom!
Burgundy Lace Japanese Painted Fern is a herbaceous perennial that is resistant to deer and extreme weather. Zones 5-8. Grows in part to full shade to about 12" tall.
Delicate blooms in pink, white, and purple nearly cover the antique urn in this English garden at Wollerton Old Hall. Photo by Clive Nichols Garden Photography.:
Achillea 'Gold Plate' and Verbena bonariensis in late summer border. Herbaceous perennial. Biennial colour contrast combination border. September yellow violet lilac