In the order Lepoptera, the abutilon moth, the cotton bollworm, and the cutworm. The order Hemoptera is a minor problem, the mealy bugs and the leafhopper, and finally in the order Hemiptera the cotton strainer. Plant enemies usually do not compete in a cultivated field. Weeding can increase yield and calyx size, but may also reduce profit for the farmer. Because of differences in available land and labor prices, Chinese hibiscus fields are generally weeded and even hand watered if necessary, for maximum yield, while those in Thailand are given minimal attention.
Quality is comparable.
Growth Flowering of the hibiscus is induced as the days become shorter and light intensity reduces. Flowering begins in September or later depending on the country in question, and continues through October or later when the entire field is in bloom. Flowers begin to drop at the end of October or later. The seed pods begin ripening towards the bottom and proceed to the top. In Sudan, growers will sometimes allow the seed to completely ripen and the leaves drop prior to harvest.