Teasel, Dispacus fullonum.
Tight, prickly rosettes yield tall stems of spiny purple flowerheads in summer. It’s perfect for growing at the back of a sunny border, in cottage garden schemes and also at the pond edge. The flowers are extremely attractive to bees and butterflies, and the foliage is a magnet for aphids, which in turn attract ladybirds. If left to seed, the brown seedheads are a magnet for goldfinches, but also work well in dried flower arrangements.
Sow directly where they are to flower the following year. Sow 6mm deep into prepared soil which has been raked to a fine tilth. Sow in clumps or shallow drills with 30cm spacing. Water regularly. Germination takes 14 days approx. but will vary depending on the temperature. Thin to final spacing of 30cm. light frosts will not harm the seedlings.Very easy to grow. Will tolerate any soil or situation. Ideally plant in a corner or area where the plant can be contained as it will spread freely if left unchecked.