Thompson & Morgan’s top potato and vegetable expert Colin Randel will offer specific potato growing advice and help visitors select the best varieties for the garden and the kitchen.
Local allotmenteer Bernard Stopps will demonstrate how to grow a crop of potatoes in a bag.
Gardening expert and local BBC Three Counties radio gardener Jason Breed from Kings Seeds will to impart his knowledge on all things seed raised.
Members of the Buckinghamshire Branch of the National Vegetable Society will help and advise.
And top grafting expert, Fritz De Zutter, from Moulton College in Northamptonshire will be sharing his skills of apple grafting.