Callistephus - Aster Blue is a wonderful tall Aster with large 3-5 inch (8 - 12 cm) blooms that are brilliant light blue in color. Peony Aster is easily grown from flower seeds, so grow enough for the neighbors because they will want some too! Grows up to 25 - 30 inches tall (70 cm), make them ideal for flower beds as well as borders & flower gardens. Aster plants are very heat-resistant & virtually worry free. SOWING: Sowing: March - April Season: Annual Hardiness Zones: 3 - 9 Height 25-30 inches (70-80cm) Bloom Season: Early summer to fall Bloom Colour: Blue Environment: Full sun to partial shade Soil Type: Well-drained, rich, deep, light soil, pH 6.0 - 6.5 Temperature: 60 - 70F (18- 20 C) Average Germ Time: 7 - 21 days Light Required: Yes Depth: Cover seed with topsoil thinly after sowing Moisture: Keep soil slightly moist but not wet Plant Spacing: 12 inches Peony Aster Blue Duchesse 150 Seeds Callistephus Chinensis