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.
Types. Most diseases of hibiscus plants are caused by fungi. Hibiscus plants are susceptible to leaf spots. Botrytis blight also affects the leaves, as well as flowers and stems.Cankers grow on twigs and branches of the plants, while mushroom root rot causes the roots to decay and die.ypes. Most diseases of hibiscus plants are caused by fungi. Hibiscus plants are susceptible to leaf spots. Botrytis blight also affects the leaves, as well as flowers and stems.