shivering. involuntary shaking of the body, as with cold. It is caused by contraction or twitching of the muscles, and is a physiologic method of heat production in humans and other mammals. As a form of aerobic skeletal muscle activity, vigorous shivering uses about as much energy as riding a bicycle or shoveling snow.
Pittosporum ( / p Éª Ë t É s p Éµ r Ém / or / Ë p Éª t Éµ Ë s p ÉÉr Ém /) [1] is a genus of about 200 species of flowering plants in the family Pittosporaceae. The genus is probably Gondwanan in origin; its present range extends from Australasia, Oceania, eastern Asia and some parts of Africa.
Culture. Because it takes well to pruning, you can maintain pittosporum trees at your desired height by hand pruning them as they mature. Although this means they can be higher maintenance when they are younger, the rest of their care is relatively simple.arden Uses. Most species of pittosporum grow well as hedges or screens, and their moderate leaf density adds to the privacy they offer. For this reason, they can also be grown as shade trees. Grown alone, you may prune them to be specimen trees or topiary, and grown in rows they make a good informal hedge or shrubbery.