Pinta flowers6/20/2023 ![]() If you want to renew your pentas plants by doing major pruning or trimming them to a few inches (8 cm.) above the soil to rejuvenate them, wait until after the flowers fade in autumn. Description Pentas can be grown as an herbaceous perennial in Zones 10 and 11, and as an annual in less temperate zones. Trimming perennial shrubs to shape can be done at any time. Annuals only live for one growing season, so you can trim or shape them whenever you feel it is necessary. If you are wondering when to cut back a pentas plant, it depends on whether you are growing it as an annual or a perennial. You can root them and use them as new shrubs. You’ll want to start pruning the plants when a few of the branches are noticeably taller than the rest of the plant, giving the pentas a disheveled look.Ĭut the tall stems back at a bud a few inches (8 cm.) below the tips of the other branches. Perennial pentas plant pruning may be necessary if the shrubs are looking leggy or scraggly. If pentas are perennials in your region, they can grow taller than you are over time. Pruning pentas plants by removing the dead flower clusters also encourages new flowers to grow. You can cut back two-thirds of the flower stalk when you start trimming pentas for cut flowers.ĭeadheading pentas is another way to do pentas plant pruning. One way to accomplish this is to regularly remove some of the blossoms to display indoors in cut flower arrangements. However, it may help keep the shrub looking its best. Pruning pentas plants grown as annuals is not necessary to create a strong branch structure. In cooler zones across the country, these shrubs, also called Egyptian star flowers, are grown as annuals. If you live in USDA plant hardiness zones 10 or 11, you can grow pentas as evergreen perennials. For information about pentas plant pruning, including tips on when to cut back a pentas plant, read on. Do you need to worry about pruning pentas plants? Pentas in frost-free regions are perennials and can grow leggy if left untrimmed. They also appreciate the butterflies and hummingbirds that pentas attract to the garden. Penta flowers, sometimes known as star flowers, are a good choice for gardeners looking for consistent plants that bloom from year to year but require little maintenance. Gardeners admire pentas plants ( Pentas lanceolata) for their bright, generous clusters of star-shaped flowers.
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