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Water Hyssop

Bacopa monnieri

Last reviewed: September 2026

Bacopa monnieri is a low-growing forb that thrives in full sun and consistently wet soil, blooming with small white flowers from March through November.

Water Hyssop (Bacopa monnieri)
Photo: no rights reserved, uploaded by 葉子

Toxicity unknown

Water Hyssop (Bacopa monnieri) 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

6"–12" H × 12"–36" W

Bloom

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

Native to

TX

Pollinators

butterflies

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 459 programs across 44 states, each with a link to the provider and the date we last checked it.

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Upload a photo of your yard and Patch Vision shows a rendering of it planted with natives for your region, like Water Hyssop.

Water Hyssop is a low-growing native perennial that forms a dense mat of small, succulent-like leaves. It produces tiny white flowers nearly year-round and thrives in consistently moist conditions, making it ideal for rain gardens or pond edges.

Growing Water Hyssop

Grow Water Hyssop in full sun and high water. Mature plants reach 6 to 12 inches tall and spread 12 to 36 inches wide. Expect low maintenance to keep it looking intentional in a front yard.

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In an HOA neighborhood

Water Hyssop 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

This plant attracts butterflies with its long blooming period from spring through fall. The dense mat provides shelter for beneficial insects and small wildlife.

Common questions

What growing conditions does Bacopa monnieri need?
Bacopa monnieri does best in full sun with soil that stays consistently wet to saturated. It grows well along pond edges, ditches, and other low-lying areas that hold moisture.
How long does Bacopa monnieri bloom?
In Texas, Bacopa monnieri typically flowers from March through November, producing small white blooms over a long stretch of the growing season.
Does Bacopa monnieri attract pollinators?
Bacopa monnieri flowers are visited by butterflies, which use the blooms as a nectar source during the plant's long bloom period.
Can Bacopa monnieri grow in standing water?
Yes, Bacopa monnieri tolerates high moisture levels and can grow rooted in shallow standing water as well as consistently damp soil.
Is Water Hyssop HOA-friendly?
Water Hyssop is generally an HOA-friendly choice in the right placement, with low maintenance.

These answers were drafted with an AI model from this plant's data. Verify care details with a local expert.

Native range data from vouchered herbarium specimen records and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

If something looks wrong

Common plant problems, and what to check first

These come up on almost any plant. Each guide lists the likely causes in the order they are worth ruling out, with one thing to check before you act on any of them, and links to the source it came from.

See all plant problem guides

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