Sometimes known as Dittany and sometimes called The Burning Bush, Dictamnus has the AGM from the RHS. It’s an aromatic woody stemmed perennial that bear erect stems adorned with five petal white-pink-purple flowers that often show dark veins in the petal and prominent stamens. Dictamnus will flower in the early summer months April to July. This herbaceous perennial has pinnate foliage that’s green from spring to autumn. This plant is mildly toxic if eaten despite the lemony aroma in the summer months. Grow in full sun or partial shade in well drained soil.