The scented leaf pelargoniums are really hard to beat. In fact, the fragrance in the polytunnel where we propagate all our plants from the ‘mother stock’ is nothing short of heady. If you’re new to pelargoniums, Sarah recommends the delicately flowered species variety sidoides for starters, but we’ve got a soft spot for ‘Lord Bute’. They’re not hardy, but will happily overwinter in a frost-free greenhouse or conservatory, coming out into the garden in their terracotta pots for the warmer summer