The jacobinia (Justicia carnea) is an evergreen shrub that is often referred to as the flamingo plant, or the king's crown. The jacobinia can grow up to 7 feet tall with 6-inch dark green leaves. The flowers on this shrub can be red, purple, white, orange and yellow. These flowers are oblong in shape, and sprout outward from the center of the spike. Jacobinia is hardy in zones 9 to 11.
Make sure your jacobinia has lots of shade. These plants don't like a lot of sun. You may have to transplant your jacobinia if it is not shaded by a tree, or the side of your house or barn.
Water your jacobinia so that the soil remains moist, but not sopping wet. This shrub enjoys an average amount of water.
Fertilize your jacobinia with a slow-release balanced fertilizer, such as a 13-13-13. Floridata recommends you fertilize your jacobinia in the spring, summer and early fall.
Prune your jacobinia to get the shrub to form the shape of your choosing. This is not essential; you may want to just prune back some branches so you can get a better view of some of the flowers.
Keep an eye out for aphids or other small pests. Jacobinias are pretty much pest-free, but if you do get an infestation you want to stop it while it is still minor. Aphids and other small insects will most likely be found on the underside of any leaves. You can squirt them off with your garden hose, or spray soapy dishwater on them.