A well-designed landscape space offers fascination from early spring through late autumn, and after if you choose plants with winter interest. For the chief growing period, much of that benefit stems from flowering and foliage plant varieties. Homeowners who wish for a lesser maintenance landscape would be sensible to search out perennials that are both easy-to-grow and propose a lengthy blooming time. Many perennials bloom for two to four weeks, however, the lengthiest flowering perennials, like coneflowers and salvia, gauge their flowering time in months, not weeks.

When designing a landscape space with perennials that have flower longevity, the same essential guidelines of design pertain; select a blend of early, mid-season, and late-flowering specimens. You can also alter both the bloom period and duration of the flowering cycle with pruning methods; pinching, deadheading, and shearing.

It is not easy to find a long-blooming perennial for shady spaces, but Luxuriant Bleeding Heart does the job.  Extending up to knee-high, this resilient variety generates clusters of reddish-pink flowers throughout late spring and summer. Establish this shade-tolerant perennial in a woodland garden or shady border. Removing spent blooms will guarantee months of color.

Full Moon Coreopsis is a striking plant and among the longest flowering perennials with a season that extends from early summer to early autumn. Coreopsis has outstanding drought tolerance and is popular with the pollinators. With most Coreopsis cultivars, deadhead blooms as they are spent to promote new color.

Goldsturm Black-eyed Susan is extensively thought to be among the best perennials of all time. Goldsturm strikes the late summer landscape with weeks and weeks of audacious color that continues into October. The drought-tolerant plants cultivate to about two-feet tall and present the best visual effect when cultivated in masses. Deadhead blooms as they are spent to promote new color.