Mr Fothergrill's Wf-greater Knapweed A great performer for flowering for months ahead in borders, wild gardens, and for perfect cutting. Nectar-rich flowers are a magnet to bees and butterflies. Sow indoors February to April or outdoors March to June for flower in July to September. Mainly seen growing in wild in hedgerows, grassland and on the roadside, makes it an ideal addition to the flower border and wildlife areas in your garden or outdoor space.  Specifications: Height: 60cm  Sow indoors Feb - Apr for Flower in Jul -Sep Sow outdoors in March - June for flowers in Jul - Sept  Average 100 seeds Colour: Multi Coloured Guarantee: 2 years Material: Paper Model Number: 21462 Sowing Guide  Sow indoors for surest results, 0.5cm (1/4') deep, in trays of compost. Water well and place in a cold frame, unheated greenhouse, or on a cool windowsill. Seedlings appear in 14-42 days. Transplant seedlings 5cm (2') apart to further trays when large enough to handle. (Always handle by a leaf, nev