Pentas is a soft-wooded, bushy shrub which grows only 12-18 inches high when potted. It is mainly Winter-flowering and clusters of small, star shaped flowers are very attractive.
Water actively growing plants moderately enough to make the entire mixture moist, but allow the top half inch of mixture to dry out before watering again.
Apply standard liquid fertilizer every 2 weeks except during the late Winter rest period.
In Spring move plants into pots one size larger until they are 3 years old. Re-place them by newly rooted cuttings every 2 or 3 years.
Tip cuttings of non flowering shoots will root at any time in Spring or Summer. Take 2 to 3 inch long cutting just below a leaf, strip away the lower leaves.
Pentas need bright light with at least 4 hours a day of direct sunlight. Give a rest period of 6-8 weeks when flowering season is over.
Pinch and train the plant into a bushy form approximately 12 to 16 inches tall, be careful not to cut off developing flower clusters.
If plant is in draft or dry air, leaves will scorch.
Most plant cells look like little boxes full of green disks. The disks are called chloroplasts. Other organelles inside a plant cell include a nucleus (where the DNA is kept), a large central vacuole (where water and other materials are stored) and a complex internal skeleton or cytoskeleton made of various proteins.