Lobelia

Scientific Name: Lobelia erinus

Common Names: Lobelia, Trailing Lobelia, Garden Lobelia

Native to: Native to Southern Africa

Lighting Requirements: Full sun to partial shade. Lobelia thrives in full sun, but it can tolerate some light shade, especially in warmer climates where some afternoon protection from the sun is beneficial.

Height: 6 to 12 inches 

Width: 12 to 18 inches

Winter Look: Typically grown as an annual in colder climates, dying back after the first frost.

Seasonal Interest: Spring to fall, with peak blooming in late spring to summer

Drought Tolerance: Low. Lobelia prefers consistently moist soil and does not tolerate drought well, requiring regular watering.

Soil Requirements: Well-draining, fertile, moist soil with high organic content

pH Range: 6.0 to 7.0 (slightly acidic to neutral)

Hardiness Zones: USDA Zones 10 to 11 (grown as an annual in colder zones)

Deer Resistance: Low. Deer may feed on Lobelia if other food sources are scarce.

Attracts: Bees, butterflies, and hummingbirds

Potential Issues: Overwatering can lead to root rot and may also suffer from leaf spot or other fungal diseases in humid conditions.

Notes: Lobelia erinus is a popular trailing or spreading annual, widely used for hanging baskets, window boxes, containers, and as ground cover. It is admired for its vibrant blue, purple, or white flowers that bloom profusely throughout the growing season. Lobelia thrives in cool, moist environments and prefers regular watering to maintain its appearance. It is often used in combination with other annuals in mixed plantings.