gram. 1  the basic unit of mass in the metric system, equal to 0.03527 ounce (0.0022046 pound or 15.4321 grains): now defined in the SI system as 0.001 of the mass of the standard international kilogram (a platinum-iridium cylinder kept in France): one pound equals 453.5924 grams: abbrev. g.
1 Light: Hibiscus are full-sun plants. Lack of sunlight can cause overall yellowing of the leaves. On the other hand, if the plant is getting sunburned, the leaves can get yellow or white splotches.  Insect Infestation: Spider mites and aphids are two major pests of hibiscus that can cause leaf damage and discoloration.
Disease and Pests. While the hibiscus tree is relatively free of serious problem, it may develop leaf spots, rusts, canker or blights, so watch out for these issues. The blooms on this tree may also attract whiteflies and aphids, which can damage the flowers and leaves. Aphids, in particular, can spread viral diseases.Mealybugs may present a problem as well -- a mealybug infestation can completely strip your hibiscus tree of foliage.hile the hibiscus tree does best in soil that receives routine moderate watering, it can also tolerate drought conditions. Hibiscus trees can grow as much as 8 to 12 feet tall and 6 to 10 feet wide. When mature, the tree takes on a vase-like form.