Because perennials have relatively short blooms, a landscaper will most likely suggest planting annuals around perennials to prolong the flowering.
(perennials; have; relatively short blooms) (a landscaper; will most likely suggest; planting annuals around perennials to prolong the flowering)
perennials a landscaper
have will most likely suggest
relatively short blooms
planting annuals around perennials to prolong the flowering