Festivities will begin in the restaurant with two consecutive tenth anniversary supper clubs on 5-6 June.
Petersham Nurseries buyer Giselle McCarthy and head gardener Lucy Boyd will host.
On 7-8 June, the grounds are opened up and visitors invited to pick up a Petersham picnic and gather on the lawn of Petersham House Garden where they will be hosted by Lara Boglione, the eldest daughter and managing director of Petersham Nurseries.
On 6 June the horticulture team will deliver their first ever evening event: 'An Introduction to the World of Roses' withesident rose expert Martin Ogden.
Celebrations culminate in Petersham Nurseries tenth anniversary summer party.
New for 2014 is Petersham Cellar, a project to promote an ever evolving selection of Italian wines.And education-based Petersham Platform is now a space to debate issues of sustainability, food education and ethnobotany at Petersham.