Approximately 30 species of evergreen perennials cultivated for their tubular, five-lobed flowers, clustered and extended from the center of the plant. Grow in greenhouse or as houseplants or shaded areas in a tropical climate.
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Size:Height: 0 ft. to 0 ft.
Width: 0 ft. to 0 ft.
Plant Category:perennials, shrubs,
Bloomtime Range: Mid Winter to Late Winter
USDA Hardiness Zone:undefined
AHS Heat Zone:Not defined for this plant
Light Range:Part Shade to Sun
pH Range:Not defined for this plant
Soil Range:Loam to Potting Soil
Water Range:Normal to Moist
ProblemsPest : Whiteflies
Whiteflies are small, winged insects that look like tiny moths, which attack many types of plants. The flying adult stage prefers the underside of leaves to feed and breed. Whiteflies can multiply quickly as a female can lay up to 500 eggs in a life span of 2 months. If a plant is infested with whiteflies, you will see a cloud of fleeing insects when the plant is disturbed. Whiteflies can weaken a plant, eventually leading to plant death if they are not checked. They can transmit many harmful plant viruses. They also produce a sweet substance called honeydew (coveted by ants) which can lead to an unattractive black surface fungal growth called sooty mold.
Possible controls: keep weeds down; use screening in windows to keep them out; remove infested plants away from non-infested plants; use a reflective mulch (aluminum foil) under plants (this repels whiteflies); trap with yellow sticky cards, apply labeled pesticides; encourage natural enemies such as parasitic wasps in the garden; and sometimes a good steady shower of water will wash them off the plant.
Fungi : Leaf Spots
Leaf spots are caused by fungi or bacteria. Brown or black spots and patches may be either ragged or circular, with a water soaked or yellow-edged appearance. Insects, rain, dirty garden tools, or even people can help its spread.
Prevention and Control: Remove infected leaves when the plant is dry. Leaves that collect around the base of the plant should be raked up and disposed of. Avoid overhead irrigation if possible; water should be directed at soil level. For fungal leaf spots, use a recommended fungicide according to label directions.