Raven is working on three one-hour programmes called Operation Pollination for the BBC to air in 2011. They will be about destroyed habitats and the impact on pollinators in cities and the countryside.
She said she did not want to seem too "preachy" or "patronising" and called on the industry to use a symbol, which she wants the RHS to back, to identify wildlife-friendly plants.
Raven said she was also struck by "how little proper biodiversity" goes into Britain in Bloom bedding schemes and wanted parks departments to move away from bedding. She added that a lot of TV can be "rubbish" but if it included campaigns it can be very powerful.