Growing Lobelia from seed is very rewarding. If starting Lobelia seed outdoors, it will not begin to flower for two months after the seed is planted. For quicker flowering, start the ground cover seeds indoors 10 - 12 weeks before the last frost is due.
Since the Lobelia seeds are very small, plant them on top of finely prepared soil without covering them. Transplant Lobelia seedlings after all danger of frost are passed, spacing them 6 inches apart. Remove flower spikes after blooming to produce further growth.
USDA Zones: 3 - 9
Height: 4 - 5 inches
Width: 6 inches
Bloom Season: Summer through fall
Bloom Color: White
Growth Rate: Moderate
Environment: Full sun to partial shade
Soil Type: Well-drained soil, pH 5.5 - 6.5
Deer Resistant: Yes
Average Germ Time: 14 - 21 days
Light Required: Yes
Depth: Press lightly into the soil but do not cover
Sowing Rate: Approximately 5000 lobelia seeds cover 100 square feet or 12 seeds per plant
Moisture: Keep soil slightly moist, but not wet until germination