How much sun does Blue Waterhyssop need?

Blue Waterhyssop grows best in full sun conditions.

Where is Blue Waterhyssop native?

Blue Waterhyssop (Bacopa caroliniana) is native to AL, FL, GA, LA and 7 more states, per the World Checklist of Vascular Plants (Kew).

What pollinators does Blue Waterhyssop attract?

Blue Waterhyssop draws butterflies and moths.

Is Blue Waterhyssop HOA-friendly?

Blue Waterhyssop is generally an HOA-friendly choice in the right placement, with low maintenance.

Blue Waterhyssop

Name: Pollinator Patch
Author: Pollinator Patch

Bacopa caroliniana

Last reviewed: August 2026

Blue Waterhyssop (Bacopa caroliniana) is a perennial forb native to AL, FL, GA, LA and 7 more states. It blooms in March, April, May, June, July, August, September, October, and November. The flowers draw butterflies and moths. It reads as an intentional, HOA-friendly planting in the right spot.

Toxicity unknown

Blue Waterhyssop (Bacopa caroliniana) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.

Light

full sun

Water

high

Size

12"–36" H × 12"–36" W

Bloom

Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov

Native to

AL, FL, GA, LA and 7 more states

Pollinators

butterflies, moths

Before you buy

Your city may pay you to plant this

Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 445 programs across 44 states, each with a link to the provider and the date we last checked it.

Find rebates in your area

Browse plants for this ecoregion

Middle Atlantic Coastal Plain Southeastern Plains Southern Coastal Plain Southern Florida Coastal Plain

Blue Waterhyssop is a moisture-loving perennial that thrives in wet soils and boggy areas. It produces small blue flowers from spring through fall and maintains a compact, spreading form. This plant is ideal for rain gardens, pond edges, or areas with consistent moisture.

Growing Blue Waterhyssop

Grow Blue Waterhyssop in full sun and high water. Mature plants reach 12 to 36 inches tall and spread 12 to 36 inches wide. Expect low maintenance to keep it looking intentional in a front yard.

In an HOA neighborhood

Blue Waterhyssop is an HOA-friendly choice. Maintenance level: low. Tidiness: 2 out of 5.

Works well in: front yard, foundation, street edge, mid zone.

Wildlife value

The long blooming season provides nectar for butterflies and moths from spring through late fall. Its dense growth habit also offers shelter for small wildlife.

Common questions

How much sun does Blue Waterhyssop need?: Blue Waterhyssop grows best in full sun conditions.
When does Blue Waterhyssop bloom?: Blue Waterhyssop blooms in March, April, May, June, July, August, September, October, and November.
Where is Blue Waterhyssop native?: Blue Waterhyssop (Bacopa caroliniana) is native to AL, FL, GA, LA and 7 more states, per the World Checklist of Vascular Plants (Kew).
What pollinators does Blue Waterhyssop attract?: Blue Waterhyssop draws butterflies and moths.
Is Blue Waterhyssop HOA-friendly?: Blue Waterhyssop is generally an HOA-friendly choice in the right placement, with low maintenance.

Native range data from the World Checklist of Vascular Plants (Kew). Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

Ready to grow Blue Waterhyssop? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.

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