Ageratum 'Blue Mink' produces large heads of rich lavender-blue blooms. Stunning grown with red salvias! Ideal for edging or creating colour drifts. HHA - Half-hardy annual. Height 23cm (9"). Ageratum protects itself against insect attack by producing a chemical that can cause sterility in insect pests. Growing Information: Sow in a propagator on a windowsill or in a greenhouse at approximately 15-18°C (60-65°F), pressing the seed lightly onto a good quality finely sieved, moist compost. Do not exclude light or allow it to dry out (Germination 10-14 days). Transplant seedlings, spacing them out 5cm (2") apart in trays and grow on. Plant out 30cm (12") apart in a sunny position after the danger of frost has passed. Ageratum has an interesting method of protecting itself against insect attack; it produces a chemical that can cause insect pests' sterility. Approved Suttons seeds retailer. Average Packet Content: 1200 seeds