Egyptian Star Flower (Pentas lanceolata) Cope with Summer’s Heat and Humidity

Pentas, aka Egyptian starflower, (Pentas lanceolata) excel in the summer flower garden. Only a few years ago, pentas were only found decorating window boxes and other containers. Today, they have becoming a popular bedding plant in geographic areas where summer temps get hot.

Pentas grow best in full to part sun (6-hours minimum), and preferably, in a compost-rich, well-drained garden soil with regular watering. Soil pH may range from moderately acidic to slightly alkaline(pH 5.8 to 7.5). Established plants become moderately drought tolerant by mid-summer. Adding a 2-3 inch layer of organic mulch is also beneficial to retain soil moisture.

The 3- 3 1/2 inch long leaves are dark lustrous green. Disease and pest issues are few if plants are properly spaced and irrigated when needed. Spring-planted pentas bloom non-stop to the first autumn hard frost. The flat-topped 3-5 inch wide flowers (corymbs) are clusters of brightly colored star-like blooms– available in red, pink, lavender purple, and white. The non-fragrant flowers attract huge numbers of butterflies to the summer garden.

At spring planting time, broadcast a slow release fertilizer over the flower bed. Supplement with a water-soluble product such as Miracle-Gro™, Jacks™, or Schultz™ according to package directions biweekly from mid-July to early September.

There are numerous pentas varieties including Graffiti, Kaleidoscope, New Look, Butterfly, Pinata and Starcluster series. Plant heights (2 to 4 feet range) will vary from one series to another.