Will happily self-seed in good growing conditions to create a lovely colony. Prefers part shade and enjoys neutral to slightly acidic, moist but well-drained soils, enriched with leaf mould or humus (to prevent stagnation). Do not allow the soil to dry out during the growing season.

Should you deadhead meconopsis?

Therefore it is essential to remove the flower heads after the last petals have dropped to prevent energy being wasted on setting seeds. It may well be sensible to let one plant in a group set seed and collect it yourself while 'dead heading' the others.

Do Himalayan poppies spread?

As Monty Don once put it, no other plant is as unambiguously blue as this: it's a real head-turner. Planted in the right spot, Meconopsis 'Lingholm' will put out sky-blue blooms from May to July. Height and spread: 75cm x 50cm.