Papaver Shirley Poppy Double Mixed Seeds - 6400 Organic Flower Seed Large double flowers in shades of pink, white, rose, salmon & crimson which appear from June to August. 60cm. Sow seeds directly into a finely textured garden bed in full sun as early in spring as ground can be worked. To help space these small seeds, it’s helpful to mix them with dry sand before sowing. Cover very lightly with fine soil & keep seed bed moist as seedlings emerge over 10 to 21 days. Papaver Shirley Poppy Double Mixed Seeds - 6400 Organic Flower Seed