Bacopa caroliniana

blue waterhyssop, lemon hyssop


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Use this link to get more info about this plant from the USF Institute for Systematic Botany

Plant Specifics

Form: flower
Life Span: short-lived perennial
Size: Height: 0.25 - 0.5 ft    Width: extensive mats
Flower Color: flower color      blue
Phenology: winter dormant
Noted for: Showy flowers


Recommended Uses: Spreading ground cover around the edges of retention ponds and aquatic gardens. Groundcover in restoration areas. Also used in aquariums.
Propagation: Easily roots from division or stem cuttings.
Availability: Native nurseries
Light: light requirement  
Moisture Tolerance:
Salt Tolerance: Not salt tolerant
Soil or other substrate: Sand
Soil pH Range: broadly tolerant, prefers some organics


Native Habitats: Marshes, swamps, ditches

Distribution and Planting Zones

Natural Range in Florida

USDA Zones:

USDA zones are based on minimum winter temperatures

Suitable to grow in:


Over the centuries, this plant has been used in religious and medical contexts. Leaves are lemon-scented.

Other Comments:

Lemon bacopa is distinguished by blue flowers, a hairy upper stem, and by the lemony scent of its crushed foliage. The plant has a broad distribution including a long history of ethnobotanical uses in India, leading to the suspicion that it may not be native to North America.