Plants
Egyptian Star Flower
Pentas lanceolata · Rubiaceae
The pentas is a little flowering powerhouse: above rich green, slightly velvety foliage, dense clusters of five-pointed star flowers in red, pink, white or lavender open all summer long. On the balcony and terrace it is a butterfly magnet, in a bright room a persistent bloomer. It is easy to care for, heat-tolerant and safe for pet households.
- Care level
- Easy
- Botanical
- Pentas lanceolata
Pentas belongs to the madder family, making it a relative of coffee and the coral bead plant. The trade is dominated by compact series such as „Starcluster“ or „Graffiti“, bred for sturdy growth and large flower clusters — ideal for pots and boxes.
Its East African origin makes pentas one of the most heat-tolerant summer plants in the range. While other balcony bloomers flag in high summer, it flowers merrily on at 30 degrees as long as the watering is right. A sunny to semi-shaded spot is ideal.
As a nectar source it is an insider tip: the tubular star flowers are hugely popular with butterflies, bees and bumblebees. If you want to do something for insects on your balcony, put a pentas next to your lavender and sage — the difference is immediately visible on sunny days.
Care is uncomplicated: water evenly without waterlogging and feed regularly during the flowering season. We cut spent clusters back to just above the next pair of leaves; the plant then branches and pushes out new buds.
As a tropical subshrub, pentas is not hardy but does not have to die: before the first frost bring it indoors, bright at 10 to 15 degrees, water sparingly and cut it back by a third in spring. It will start its second season with vigour.
Indoors it does well at a bright south or west window, flowering into autumn with good care. Practical for families: Pentas lanceolata is considered non-toxic to cats, dogs and children and may sit on low tables and windowsills.
Is Egyptian Star Flower toxic to children and pets?
- Children
- Non-toxic
- Cats
- Non-toxic
- Dogs
- Non-toxic
Pentas lanceolata is considered non-toxic to cats, dogs and children — a safe choice for balconies, terraces and windowsills in pet households.
Overview: toxic & non-toxic plants for cats, dogs and children
Care
- 01Place sunny to semi-shaded — the more light, the richer the bloom.
- 02Water evenly and never let the root ball dry out completely; avoid waterlogging.
- 03Feed every one to two weeks from May to September.
- 04Cut spent clusters back to above the next leaf pair to encourage new buds.
- 05Pentas handles heat well but no frost at all — bring it in before the first cold nights.
- 06Overwinter bright at 10–15 °C and cut back by a third in spring.
Frequently asked
- Is pentas toxic to cats or dogs?
- No, Pentas lanceolata is considered non-toxic to cats, dogs and people. It can stand on balconies and windowsills without concern, even if pets occasionally sniff or nibble at it.
- Does pentas really attract butterflies?
- Yes, remarkably reliably. The tubular star flowers produce plenty of nectar and are easily accessible to butterflies, bees and bumblebees. In its homeland it is even visited by sunbirds — on a Düsseldorf balcony, butterflies and wild bees take over that role.
- Can I overwinter pentas?
- Yes. Before the first frost bring it indoors, bright and cool at 10 to 15 degrees, water only moderately and do not feed. In spring cut it back by a third, repot and reaccustom it slowly to the sun — in its second season it often flowers even more lavishly.
- Why has my pentas stopped flowering?
- Usually it is standing too dark or has gone without deadheading and feeding for a while. Pentas flowers on new growth: trim spent clusters back to above the next leaf pair, move it somewhere brighter and feed regularly — new buds appear after two or three weeks.