The day will feature a number of stalls from specialist nurseries and horticulturists selling a wide range of fascinating and unusual plants and is the only garden fair of its kind to take place in London.
It will be the perfect opportunity for members of the public to purchase plants and ask the experts for advice.
Guided tours of the palace garden will be available for an extra charge.
Food and drink will be on sale.
For the latest local news and events direct to your inbox every Monday, you need our weekly email newsletter SE1 Direct.
7,000+ locals read it every week. Can you afford to miss out?
Read the latest issue before signing up