Success With Seeds Lobelia

Lobelia Germination Information

Lobelia Seed Germination How to Sow Lobelia:
  • Best sown indoors 10-12 weeks before last frost at alternating temperatures of 55 and 72°
  • Provide NO cover as light aids in germination
  • Expect germination in 15-20 days
  • It is not recommended to sow the annual Lobelia seeds outdoors
  • Seeds are very small

How to Grow Lobelia:
Transplanting: Transplant when there are at least two sets of true leaves

Spacing: Space seedlings 4-6 inches apart and site in full sun to light shade in a rich, sandy, well-drained soil

Soil: To improve flower performance, apply a balanced fertilizer every 2 weeks in spring and early summer then a nitrogen-free fertilizer every 2 weeks from mid-summer onward

Temperature: A lover of cool temperatures, it likes it best at 55-60° days and 50-55° nights and will die out in the heat of summer

Additional Care:  Deadhead flowers to encourage further growth

Appearance and Use:

Annual lobelias shine when used in containers and basket culture, for edging and bedding material, and when used in the flower borders. Also readily grown as house and conservatory plants. Habit ranges from upright to spreading and flowers are a mix of colors from blue, red, pink, and white. Lobelia erinus, Edging Lobelia, a trailing annual to 4-8 inches tall, is native to South Africa. Flower production is profuse all summer long in cool-summered climates (the plant will die out in the summer in the heat of the deep South), and may be blue, white, or red in color

About Lobelia:
Pronunciation:  lo-be’le-å
Lifecycle:  Annual
Origination: Campanulaceae; native to tropical and temperate areas worldwide
Common Name: Lobelia