There's nothing quite like opening your back door and being hit by a wall of fragrance from plants and if you choose carefully, you can have delicious scent all year.Fragrance lifts the mood and revives the senses, so make sure you place your plants near areas of heavy traffice so you get the full benefit, whatever the month.Here are some of my favourites:Summer and autumn scented plantsScented-leaved geraniums (Pelargonium odorata): Old varieties were used around the doors of stately homes – scent was released when ladies' long skirts brushed against them. Try Attar of Roses, which smells like Turkish Delight;…