Start indoors 4–6 weeks before last frost, plant out after frost. Direct sow group of 4–6 seeds every 1–2’ in fall four weeks before frost. Thin when 3” tall to 1 every 1–2’. Prefers full sun but will grow in part shade. Delphiniums prefer acidic soils to bloom and to maintain their bright purple blue color. Test your soil, if alkaline, reduce the soil’s pH is to add organic matter such as coffee grounds, fruit and vegetable peels, etc. Divide root ball after 3–4 years. Sow 11 pounds per acre. Soil pH 5.2–5.5. Hardiness zones 3–8. Perennial.
Usual seed life: 3–5 years.
Planting Depth
1/8"Soil Temp. Germ.
70–75˚FDays to Germ.
10–15Plant Spacing
1–2’Row Spacing
3–4’Days To Maturity
1 yearPart Shade,
Moist Well Drained Soil