Choose a site in full sun with average, well-drained soil.
Sow seeds outdoors in early spring directly into the soil. In USDA zones 8 to 11, sow in fall for bloom the following summer.
Keep soil evenly moist.
Let honesty planted in spring overwinter so it can fulfill its life cycle and produce disks the following year. (If planted in fall, honesty will produce disks the following summer.)
Tear out and discard plants in fall, after frost fells them.