Cornflower Double Blue Flower Seeds engender beautiful dark blue old-fashioned cottage garden annuals. They are great as flowers that attract pollinators. The flowers bloom on a sturdy shoot that can resist heavy gush of air. The blooms sport a lovely maroon core against the backdrop of violet petals. Sow outdoors from March to May and September to October, ready to flower from June to September. The average pack contains 250 seeds. Height: 75cm.