Spring/summer bloom
Frost hardy
In mild winter climates, sow seeds in late fall to germinate and form deep roots over the winter for a long spring bloom.
In cold winter areas, sow seed as early in spring as soil can be worked as larkspur can handle frosts and blooms best when started in cool spring weather. Sow seeds 1 inch apart in well-drained soil in full sun. Cover 1/2 inch deep, firm soil and keep moist. Be patient; germination takes 14 to 21 days. After seedlings are well established, about 2 or 3 inches tall, thin to 8 inches apart to allow for good air circulation and discourage disease. Keep plants well watered and weeded for best performance.
Sow seed early when weather is still cool to get sturdy plants that will provide many weeks of bloom. Cut flowering stalks before individual florets begin to drop for graceful indoor bouquets, or air-dry indoors for everlasting arrangements. Larkspur will continue to bloom well into summer if faded flowers are removed.
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