Larkspur can be grown in most areas, but will not do well in tropical regions. Choose a location with well-drained soil that receives full sun and has protection from strong winds. Enrich the soil with manure or compost a couple of weeks before planting.
Sow the seeds directly where they are to grow. Plants should be spaced about 6 inches apart. At this distance they will hold each other up and will not require staking. Larkspur needs regular deep waterings, but be careful not to leave them standing in water. Sidedress monthly, and watch for aphids.