Cleaner, Greener, Safer funding is awarded annually by community councils - there's a window of time for applications to be made. Last year that was in the autumn.
Looking at your previous posts I'm guessing you live in Riverside ward, which is part of the Bermondsey & Rotherhithe Community Council area.
If you email firstname.lastname@example.org she will add you to the mailing list for B&R community council and that way you will be sure to find out when the next opportunity to submit CGS applications comes round.
In the hope that it is of interest, Southwark are launching the 2014/15 Cleaner Greaner Safer fund at Nursery Row Park, SE17 1AL between 2pm and 3pm Saturday 28th September, officers will be present to offer advice and present ideas from past grant recipients.