Long-Blooming, Tough Perennials for a Sloped Berm on Long Island

Sloped berm in Long Island, NY (Zone 6/7): want hard-to-kill perennials blooming spring to fall.

Top Picks

Butterfly bush – Long bloom, tough.
Trailing/wild roses – Species types (not hybrids) bloom heavily, very hardy. Colors: yellow, white, pink, crimson.
Four o’clocks (Mirabilis jalapa) – Not perennial in NY but self-seed reliably. Bloom early summer to frost in pinks, whites, yellows, reds.

These provide months of color with minimal care on a sunny slope.

Perennials: Timing Rose Blooms: Forcing Earlier Flowers in Containers; Carpet Roses Not Blooming in First Year: Heat Stress, Not Neglect; Second-Year Roses Not Blooming—Check for Winter Kill; Rose Hybridizing in North Dakota: Books, Climate & Community; Climbing Rose Not Blooming: Potassium, Pruning, Water, and Banana Trick; Getting Two Blooms from Perennial Mums: Cut Back After First Flowering; Deadheading Perennials for Rebloom: Bee Balm, Shasta Daisy, Phlox, Cranesbill; Blooming Perennials for Heavy Clay Soil; Chrysanthemums Blooming in June: Will They Bloom Again in Fall?; Planting and Caring for Tulips and Spring-Blooming Perennials

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