Which variety of olive tree
by Sandy
(Auckland)
Answer:
There are better varieties, being the Mission and Manzanillo varieties. Sub-species Olea Africana has good diuretic and heart antioxidant properties.
I have it on good authority that Chinese olive tree cultivars do not contain oleuropein. I do not know if they contain very little or none at all.
The Chinese olive industry is growing apace so new varieties may be imported specifically for the leaves at some stage which will change this scenaro.
If you stay with the ones above you won't go wrong but that is not to say that other varieties will not work.
I am not aware of any that are ill-advised - I think your local nursery or a good reference book would be able to confirm this.
Click for Quick Search
A comprehensive book on olive leaf extract