D. X cultorum 30 seeds.
Impressive deep midnight blue, semi-double flowers with dark centres on stems up to 150cm tall. Splendid when grown in groups in a cottage garden towards the back of a sunny border. Cut stems down to the ground at the end of the growing season. Best grown in full sun in moist, well-drained soil. Sow in seed trays in Autumn and Spring and transplant when large enough to handle. Protect from slugs and snails. Seeds require cold stratification to germinate. Sowing depth: 3mm CAUTION: POISONOUS IF INGESTED