Members of the public will have the opportunity to see the garden with its new Giant Amazon Water Lily and meet local conservation groups.
There will also be the chance to learn more about the garden's development by taking one of two special guided tours.
On Friday's tour [August 17] the Curator of the Botanic Garden, Nick Wray, will explain how the garden has been developed and what plant collections have been planted and the work of the garden.
On Saturday [August 18] Professor Simon Hiscock, Director of the Botanic Garden, will explain during his tour the scientific rationale behind the new garden and its collections, particularly the Evolution Collection and its unique Angiosperm Phylogeny display, the first of its type in the UK.
The Avon Wildlife Trust, Avon Gorge and Downs Wildlife Project and the Bristol Naturalists' Society will have poster displays of their work, together with a large poster exhibition by the Botanic Garden on its development at The Holmes.
Nick Wray, Botanic Garden Curator, said: "We look forward to welcoming everyone to our open weekend. Members of the public visiting the garden will see it looking at its best with floral highlights in the Floral Diversity border and the magnificent Giant Amazon Water Lily, which is now flowering."
The University of Bristol Botanic Garden Open Weekend at the Holmes is open to the public on Friday 17, Saturday 18 and Sunday, August 19. The garden will be open from 10 am to 4.30 pm, with the special guided tour of the garden taking place at 2.15 pm on Friday 17 and Saturday August 18. Admission is adults £3, school-aged children £1, which includes the special guided tour. The tour will last approximately one hour.