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Dramatic, large blooms of the deepest black with a velvet sheen, each has a small, bright yellow eye. One of the most sought after colours, Blackjack is one of the best. A hardy perennial best treated as an annual, flowers the same year from an early sowing. Grows well in sun or partial shade.
When to plant: Mid-Summer to early Winter
How to grow: Sow in trays of seed compost. Just cover the seed and keep moist. Germination will take 10-21 days. Thin (prick out) when the seedlings have developed 2-4 leaves. Transplant the seedlings when sturdy into a well prepared garden soil. Space 15-20cm (6-8in) apart. Flowers: Spring and Autumn
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