Last October I discovered a Horse Chestnut (Aesculus Hippocastanum if you're fancy) tree in the gardens of a local abandoned house and I realised that there are no broadleaf deciduous trees around here, so, over a few dog walks I collected pockets full of conkers.
Around 80 went into bags and into the fridge to stratify over the winter, and now they are germinating.
We are going to have a lot of Broadleaf deciduous trees around here soon.