Just found this extra info........

NB. All trees from Santa Cruz Olive Tree Nursery are 'container grown' and
hardened and can be planted in moderate climates (winters that don't go
below 25 deg F) at any time of the year. Very young trees may need
protection from severe frost and animals. Further advice on these situations
is readily available on this site or from Santa Cruz Olive Tree Nursery.
http://www.santacruzolive.com/planti...ge=preparation
--
David Hill
Abacus nurseries
www.abacus-nurseries.co.uk