Friends of the Earth Scotland is targeting 10,000 non-members with a poster of a drowned teddy bear to symbolise the possible impact from flooding.
The campaign, which also appears online at foe-scotland.org, encourages people to take steps to reduce their environmental impact to limit climate change and the danger of flooding.
It suggests that people consider more efficient energy methods in their homes and that they use more public transport.
Lang Banks, director of communications, said: "The drowned teddy bear image represents the devastation that flooding causes. We're hoping this will reach those people who haven't yet woken up to the huge problem of climate change."
The organisation tested the poster with 5,000 members last month and asked them to spread the word among their communities. It will soon create materials that answer people's questions on generating their own energy.
These will be used more widely next year once the Scottish Executive has published its proposals on climate change, which should include targets on reducing gas emissions.