Pentas Starcluster Red

Plant Overview

Pentas Starcluster Red (Pentas lanceolata ‘Starcluster Red’) is a vibrant tropical flowering plant prized for its large clusters of brilliant red, star-shaped blooms and lush green foliage. Part of the Starcluster series, this heat-loving variety features a strong, upright growth habit and produces an abundance of colorful flowers that attract butterflies, hummingbirds, and other beneficial pollinators. Well suited to Florida's warm, sunny climate, Pentas Starcluster Red brings bold, long-lasting color to landscape borders, mass plantings, pollinator gardens, and decorative patio containers. Its impressive flower clusters, reliable summer performance, and relatively low-maintenance requirements make it an attractive addition to residential and commercial landscapes.

Key Plant Characteristics

• Botanical Name: Pentas lanceolata ‘Starcluster Red’

• Common Names: Pentas Starcluster Red, Egyptian Starcluster

• Mature Height: Approximately 18–22 inches

• Mature Spread: Approximately 22–24 inches

• Growth Rate: Moderate

• Growth Habit: Upright, bushy, and well-branched

• Foliage: Rich green, lance-shaped leaves with a slightly textured surface

• Flowers: Large, rounded clusters of bright red, star-shaped blooms

• Blooming Season: Late spring through fall, with extended flowering possible in warm, frost-free conditions

• USDA Hardiness Zones: 10–11 according to the breeder's growing guide, with Zone 11a listed for this specific variety

• Florida Growing Zones: Best suited for year-round outdoor growth in frost-free areas of South Florida. Can be grown throughout Central and North Florida during warmer months, with frost protection recommended.

• Sunlight Requirements: Full sun

• Special Features: Heat-tolerant, pollinator-friendly, large flower clusters, extended seasonal blooming, and excellent for landscape beds and decorative containers

Plant Care Guide

• Sunlight: Plant in full sun for healthy growth and abundant flowering. Provide at least 6 hours of direct sunlight daily. Starcluster Red thrives in sunny locations and performs particularly well during Florida's warm growing season.

• Watering: Water regularly after planting to establish a healthy root system. Once established, maintain moderate soil moisture, allowing the upper layer to dry slightly between waterings. Provide supplemental water during prolonged dry periods, especially for container-grown plants. Avoid consistently saturated soil.

• Soil: Prefers fertile, well-draining soil with a slightly acidic to neutral pH. This variety adapts to Florida's sandy soils, particularly when amended with organic matter to improve moisture retention and nutrient availability.

• Fertilizing: Apply a balanced, slow-release fertilizer during active growth to support healthy foliage and abundant flowering. Container-grown plants may benefit from occasional diluted liquid fertilizer according to product directions. Avoid excessive fertilization, which may encourage foliage growth at the expense of flowers.

• Pruning: Minimal pruning is necessary due to its naturally upright, well-branched growth habit. Lightly trim overgrown stems or remove damaged foliage as needed to maintain a neat appearance. Deadheading is generally unnecessary, although removing older flower clusters can improve the plant's appearance and encourage fresh growth.

• Cold Protection: Pentas Starcluster Red thrives in warm temperatures but is sensitive to frost and freezing conditions. In North and Central Florida, protect plants during cold snaps or grow them in containers that can be moved to sheltered locations. Plants may experience winter dieback in cooler areas.

• Pests & Diseases: Monitor for aphids, whiteflies, spider mites, and occasional caterpillars. Maintain adequate air circulation, inspect foliage periodically, and avoid excessive soil moisture to reduce potential disease problems.

• Additional Care Tips: Space plants approximately 18–24 inches apart to accommodate their mature growth and encourage healthy airflow. Apply mulch around landscape plantings to conserve moisture during Florida's warmer months. For a striking pollinator-friendly display, combine Starcluster Red with white pentas, purple salvia, or other complementary flowering plants that highlight its brilliant red blooms.