Intermediate
skill rating
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Bacopa caroliniana (Blue water hyssop)
2 hours care
per year
per year
0.4m
Max height
Max height
0.6m
Max spread
Max spread
2-5 years
To maturity
To maturity
Plant details
Botanical name
Bacopa caroliniana
Other names
Blue water hyssop, Blue waterhyssop, Giant red bacopa, Lemon bacopa, Adenosma amplexicaulis, Adenosma caroliniana, Obolaria caroliniana, Blue hyssop, Water hyssop, Bacopa amplexicaulis, Herpestes amplexicaulis, Herpestes caroliniana
Genus
Bacopa Bacopa
Species
B. caroliniana - B. caroliniana is an upright or creeping, aromatic, moisture-loving or aquatic, borderline hardy, rhizomatous perennial with fleshy, hairy stems bearing succulent, ovate to broadly elliptic, olive green leaves, bronze in bright light, and open-bell-shaped, blue flowers blooming from the leaf axils in summer.
Bacopa caroliniana is: Evergreen
Fragrance
All parts have a lemon-mint scent when crushed.
Habit
Creeping, Upright
Flower
Blue in Summer
Foliage
Olive green in All seasons
How to care
Watch out for
Specific pests
Aphids Aphids
General care
Pruning
If submerged, remove unsightly lower leaves as necessary.
Propagation methods
Division, Seed, Stem tip cuttings
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Where to grow
Bacopa caroliniana (Blue water hyssop) will reach a height of 0.4m and a spread of 0.6m after 2-5 years.
Suggested uses
Aquatic, Beds and borders, Bog garden, Containers, Cottage/Informal, Waterside
Cultivation
Grow in moderately fertile, preferably acid to neutral, moist or boggy soil in full sun. Tolerates light shade & brackish water. Suitable for growing as a submerged aquatic plant in tanks or small ponds. Grows upright when submerged. Leaf colour is bronze or red in strong light, especially in aquariums.
Soil type
Chalky, Clay, Loamy
Soil drainage
Boggy damp conditions, Moisture-retentive, Pond/In water
Soil pH
Acid, Neutral
Light
Full Sun
Aspect
North, South, East, West
Exposure
Sheltered
UK hardiness Note: We are working to update our ratings. Thanks for your patience.
Hardy (H4), Tender in frost (H3)
Companion plants
We do not currently have companion plants added for this plant.
Botanical name
Bacopa caroliniana
Other names
Blue water hyssop, Blue waterhyssop, Giant red bacopa, Lemon bacopa, Adenosma amplexicaulis, Adenosma caroliniana, Obolaria caroliniana, Blue hyssop, Water hyssop, Bacopa amplexicaulis, Herpestes amplexicaulis, Herpestes caroliniana
Genus
Bacopa Bacopa
Species
B. caroliniana - B. caroliniana is an upright or creeping, aromatic, moisture-loving or aquatic, borderline hardy, rhizomatous perennial with fleshy, hairy stems bearing succulent, ovate to broadly elliptic, olive green leaves, bronze in bright light, and open-bell-shaped, blue flowers blooming from the leaf axils in summer.
Native to
Eastern North America
Foliage
Evergreen
Fragrance
All parts have a lemon-mint scent when crushed.
Habit
Creeping, Upright
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Colour
Flower
Blue in Summer
Foliage
Olive green in All seasons
How to care
Watch out for
Specific pests
General care
Pruning
If submerged, remove unsightly lower leaves as necessary.
Propagation methods
Division, Seed, Stem tip cuttings
Monthly care advice
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Where to grow
Bacopa caroliniana (Blue water hyssop) will reach a height of 0.4m and a spread of 0.6m after 2-5 years.
Suggested uses
Aquatic, Beds and borders, Bog garden, Containers, Cottage/Informal, Waterside
Cultivation
Grow in moderately fertile, preferably acid to neutral, moist or boggy soil in full sun. Tolerates light shade & brackish water. Suitable for growing as a submerged aquatic plant in tanks or small ponds. Grows upright when submerged. Leaf colour is bronze or red in strong light, especially in aquariums.
Soil type
Chalky, Clay, Loamy
Soil drainage
Boggy damp conditions, Moisture-retentive, Pond/In water
Soil pH
Acid, Neutral
Light
Full Sun
Aspect
North, South, East, West
Exposure
Sheltered
UK hardiness Note: We are working to update our ratings. Thanks for your patience.
Hardy (H4), Tender in frost (H3)
USDA zones
Zone 10, Zone 9, Zone 8, Zone 7
In order to add a note on this plant, please add this plant to your plant lists.
| This plant likes... | Garden match | |
| Soil types: | Chalky, Clay, Loamy | Tell us... |
| Soil drainage: | Boggy damp conditions, Moisture-retentive, Pond/In water | Tell us... |
| Soil pH: | Acid, Neutral | Tell us... |
| Light: | Full Sun | Tell us... |
| Aspect: | North, South, East, West | Tell us... |
| Exposure: | Sheltered | Tell us... |
| Hardiness: | Hardy (H4), Tender in frost (H3) | Tell us... |
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