Answer: Bluebonnet, or Lupine, can be an annual or perennial, depending upon species. The seeds need a pre-germination treatment and the plants will flower two months after emerging. Chip the seeds or soak them in warm water overnight before sowing them. Prepare the soil by raking it smooth, then plant the seeds 1/8" deep. Seedlings should emerge in 14-60 days when kept at temperatures of 55F-65F. You can sow the seeds outdoors now, or wait until 6 weeks before the last frost of the season and start them indoors for planting out after the last frost.
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