Care Guide
Lighting
Lobelia prefers locations with partial to full sun. In very hot climates, it will benefit from some shade during the hottest hours of the day to maintain optimal flowering.
Watering
Keep the substrate consistently moist but not waterlogged. Water regularly, especially during hot periods. Lobelia does not tolerate prolonged drought well.
Fertilization
Apply a liquid flowering plant fertilizer every 2–3 weeks during the growing season to promote abundant and continuous blooms.
Temperature
Prefers moderate temperatures between 15–24°C (59–75°F). It is sensitive to frost and should be protected when temperatures drop significantly.
Specifications
Bloom Season
Spring, Fall
Spacing Requirements
4-6 inches
Average Size
6-9 inches
Transplant to Harvest Time
90-120 days
Hardiness
Zones 2-11
Plant Form
Lobelia plant shape varies by species, but generally features simple, alternate leaves and two-lipped, tubular flowers with five lobes, often with an upper pair that is erect and a lower, three-lobed, fan-like lip