The Gardener's Question Time regular proved a hit at her first show appearance and will return for this year's event on August 14 and 15.
Pippa, a regular presenter of TV's Gardener's World in the past, trained as a botanist at Durham University and achieved an MSc in Crop Rotation at Reading University. She has also been awarded an honorary doctorate by the University of Durham.
In 1985 Pippa joined the staff of the Royal Horticultural Society's Gardens at Wisley, where she ran the plant pathology department with great success.
Pippa began working for the BBC in 1988, joining Alan Titchmarsh for the gardening slot on BBC 1's Daytime Live and was a regular presenter on BBC2's Gardeners' World. She has presented her own series, Growing Science on Radio 4. Her expert horticultural knowledge is extensive which, amongst other things, led to being gardening consultant for the ITV murder mystery series Rosemary and Thyme.
She writes for BBC Gardener's World andA mateur Gardening Magazine. She has written many successful books, which include Tips, Garden Pests and Diseases, Garden Problem Solver, Pippa's Organic Kitchen Garden, A Garden for All Seasons and 1001 Ways to be a Better Gardener. Her latest publication is The Gardener's Calendar which was published in 2012.
Pippa actively supports many charities but most of her time is spent assisting HART Wildlife Rescue Centre, Toxoplasmosis Trust, Child Line and The League against Cruel Sports, with their fundraising events.
Society secretary Simon Badrock said: "Pippa's wealth of knowledge and passion for gardening will make for a very educational and instructive 2015 Flower Show'.