Lambeth Horticultural Society’s summer flower show is held on Saturday 7th September St Luke’s Church, Knights Hill. SE27 0HS. Open to the public 2pm to 5pm.
If you are interested in exhibiting there are 124 classes to choose from. Non-members welcome to enter. Check out http://lambethhorticulturalsociety.org.uk/shows.html
Deadline to apply to exhibit is Wednesday 4th September.