Bluebells at Harcourt Arboretum by Clare Holt, Nice Tree Films The bluebell wood at Harcourt Arboretum is a real hidden gem of Oxfordshire, which unfurls its secrets every spring with an exquisite display of millions of flowers. The oak woodland provides the perfect habitat for the English Bluebell, and in this short film, Timothy Walker, the Director of the University of Oxford Botanic Garden, tells us what it takes to make a bluebell happy, and why the Elizabethan fashion designers had a lot to thank this iconic wild flower for.