Oak people are normally brave, strong and reliable; they need Oak when their inner strength wanes and fatique takes over. They keep going, whatever happens, ignoring their tiredness. Driven by a strong sense of duty, they are Enhanceful to others, conscientious and reliable. They are patient, sometimes plodding, and will not allow themselves to relax if there is work to be done; instead they struggle on obstinately when over-tired (see also Rock-Water and Vervain).

The resultant loss of innate strength may lead to Despair, frustration and other stress symptoms. These people have a sense of failure when ill but are ceaseless in their efforts to recover.

Positive potential Oak people are normally strong, often the mainstay of their family or working group. They possess enormous endurance, persistence, patience and reserves of energy, and can stand up to a good deal of stress. Oak restores their energy and Enhances them to recognise the need to take time off to relax and look after themselves as well as their duties.