Olea; Olearia; Origanum; Osmanthus;
Leaves akin to a Holly on this Osmanthus. Normally grown for rich scented flowers, the O. heterophyllus variegated form has attractive foliage foliage as well.
Ochna – Birds Eye: -
Oemleria – Nuttallia – Osmaronia: -
Olea – Olive: -
Oleander – Nerium See Nerium
Oleaster - Elaeagnus: - See Elaeagnus
Origanum – Marjoram – Oregano: - Better known as herbs - several can be classes as sub-shrubs. Normally hardy and low growing, they are useful as ground cover, and are normally quite colourful for a long period throughout the summer into autumn.
Osmanthus : - Generally hardy group of evegreen shrubs with sweetly scented white flowers mid to late spring. Some can reach 3-4m or so. Choose your variety carefully.