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Blue Water-speedwell

Veronica anagallis-aquatica

Also listed as Beccabunga anagallis-aquatica, Veronica acutifolia

Also known as Water Speedwell, Brook Pimpernel

herbaceous☀️ full sun💧💧💧 high water❄ Hardy: Zone 5a – Zone 9b

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A semi-aquatic perennial with small blue or pale blue flowers, native to wet habitats and shallow water margins. It thrives in consistently moist conditions and is well-suited to water gardens, pond edges, and boggy areas.

Why grow it

Blue water-speedwell offers reliable ground cover for permanently wet sites where many perennials struggle, and its small blue flowers provide color in pond and bog gardens from late spring through summer. Compared to other aquatic speedwells, it tolerates slightly deeper water while remaining manageable in size, making it useful for transitional zones between open water and terrestrial plantings. It requires minimal fertilization once established in appropriate conditions.

Watch out for

This species can spread vigorously in ideal conditions and may need periodic thinning to prevent it from overtaking smaller plants in shallow water gardens. Plants grown in containers require consistent moisture and may decline rapidly if water levels drop during the growing season.

Overview

Form
Upright
Growth Rate
moderate
Size
0.5–1.5′ tall × 0.5–1′ wide
Dormancy
semi-evergreen
Family
Plantaginaceae
medicinal

Native Range

Europe and Western Asia

Seasonality

Bloom Season

J
F
M
A
M
J
J
A
S
O
N
D

Season of Interest

SpringSummer

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Companion Planting

Plants well with