Last August I presented a proposed charter of things the society could (and should) be doing to address the climate emergency. The only real contentious part of this charter was the stopping selling peat based compost in the trading hut. This was put to the membership, over a loooooonnng consultation period and at the April meeting this year the result was announced that the membership would back a withdrawal of the sale of peat, the committee voted on whether to adopt the Climate Charter and the resolution was passed (7-4) and therefore the Climate Charter could be adopted and the society would become part of a very large number of organisation that were attempting in there own small ways to address the impending disaster that is climate change. (I rather jumped the gun previously by announcing this before the minutes of the April meeting were agreed, but they have been now and so can be made public)
It is generally considered the case that people are most influenced by those they know and who they see taking particular actions- so even though we are a relatively small organisation we can have an influence greater than the number of actual members, we can show that we are good enough gardeners to grow without peat, that we are forward looking and concerned with the future of the planet.
We have a rather older age profile on the allotments and in CHAS and there are frequent proposals on the committee to address this but it has to be said that younger people are well aware of the issue of climate change and loss of biodiversity and were unlikely to want to join a society where we voted to keep selling peat, purely for financial reasons.
And here are a bunch of my sweet peas raised entirely peat free! 
……Which smell fantastic!