Long used by Indigenous groups across the Southern United States, yaupon is North America’s only native caffeinated plant.

From a single species of plant comes many teas. The tea tree, a shrub called Camellia sinensis, produces white, green, black and oolong teas. The tea's destiny is a matter of variables.

Genetic engineering of plants has come a long way in recent years. It was first used to make more robust crops, then more nutritious and efficient crops.… Search Query Show Search ...

Changing the microbial community on the roots of tea plants can improve the flavour and nutritional content of the leaves, leading to a better-tasting cuppa. Close. Advertisement.

What would be agreeable is a tea plant that provides all the taste and goodness but with little or none of the caffeine. Liang Chen and Ji-Qiang Jin of the Tea Research Institute of the Chinese ...