Hello,
The insulin plant is scientifically called as Costus Igneus. The herb grows easily in a well-drained, semi-shaded position. It is frost tender and grows well in sub-tropical and tropical locations, or moved to a warm sheltered position in winter. Water only sparingly. The plant grows very quickly. And the propagation is by stem cutting. It needs sunshine but it also grows in slightly shady areas.
This plant has large fleshy looking leaves. The undersides of these large, smooth, dark green leaves have light purple shade. The leaves are spirally arranged around the stem, forming attractive, arching clumps arising from underground rootstocks. The maximum height of these plants is about two feet.
It can be cultivated in well drained soils. Avoid heavy soils.Costus are best planted in the early spring.
Costus requires 1 to 2 inches of water weekly, either through rainfall or irrigation.
Apply insecticidal soap for outbreaks of aphids or spider mites. Spray the solution on all surfaces of the plant, including the undersides of the leaves.
Regards
Ashwini S