I'm not generally one for planting trees - a second floor flat kinda precludes oak birthing - but Ecotopia's latest offer is almost enough to make me phone the estate agents. Until the end of June, the purveyor of green gadgets, essentials and gifts is offering thegreenguy readers 50 per cent off on its Grow-a-Tree kits. That makes its ash, beech, oak, pussy willow and silver birch kits £5 instead of 10. Not a treehugging hippy? Consider it your way of carbon offsetting. Just use the code GGGAT at the checkout (add it in the comments' box).