Topics in Subtropics

Horticultural Myths These are practices and or products that many people working in our industry may hold to be useful but have no scientific basis for their method of action. They are formed from misinformation passed on over the generations or from common observations that are misinterpreted.

Horticulture is the cultivation of plants as ornamentals or for the production of food. When things go wrong (plants grow poorly or not at all), horticulturists sometimes turn to products that can cure, revitalize, invigorate, stimulate or enhance the growth of their plant or crop.

There have been a number of calls about damage to citrus tree trunks. Lemon is especially delicious, it seems.

By Manjul Dutt, Sheetal Ramekar and Gary England The grapefruit was created by chance from a cross between a pummelo and a sweet orange. It was first discovered in Barbados in the 18th century. All the commercially sold grapefruits today trace their roots back to the Duncan variety of grapefruit.

The University of California Statewide IPM Program presents the UC IPM Green Bulletin.