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Water violet

Hottonia palustris

Family: Primulaceae
Genus: Hottonia (hot-TON-ee-a) (Info)
Species: palustris (pal-US-triss) (Info)


Ponds and Aquatics

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Very high moisture needs; suitable for bogs and water gardens

Where to Grow:

Unknown - Tell us


12-18 in. (30-45 cm)

18-24 in. (45-60 cm)

24-36 in. (60-90 cm)


Unknown - Tell us


USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

USDA Zone 10a: to -1.1 C (30 F)

USDA Zone 10b: to 1.7 C (35 F)

USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:

Full Sun


Unknown - Tell us

Bloom Color:


White/Near White

Bloom Time:

Mid Spring

Late Spring/Early Summer



Other details:

This plant may be considered a protected species; check before digging or gathering seeds

Soil pH requirements:

Unknown - Tell us

Patent Information:


Propagation Methods:

Unknown - Tell us

Seed Collecting:

Unknown - Tell us


This plant has been said to grow in the following regions:

Minneapolis, Minnesota

Wilkes Barre, Pennsylvania

Gardeners' Notes:


On Sep 18, 2015, coriaceous from ROSLINDALE, MA wrote:

A beautiful aquatic plant, with pale pink/purple flowers in whorls on tall stalks to 3' and handsome pinnate foliage. Not easy to establish. Requires full sun, very intolerant of shade. Said to have become rare in Great Britain because of water pollution.

Grows in still, shallow, clear water that is not eutrophied. Requires water depth of 4-24". Does not tolerate water temperatures over 80F, and prefers cool/cold water.

Requires water nitrate above 5 ppm and phosphate above 0.5 ppm. pH5-7.

Native to Europe and Asia, endangered in parts of its range. Very difficult to find in cultivation in North America, where it's sometimes grown in aquaria. This is a temperate plant, not a tropical, with corresponding temperature requirements.


On Aug 11, 2010, Malus2006 from Coon Rapids, MN (Zone 4a) wrote:

Tag where I got the plant says its zone 3 - didn't survive the winter in container outside in pond.


On Nov 16, 2002, mystic from Ewing, KY (Zone 6a) wrote:

This is an submerged aquatic plant that makes a good oxygenator.They are difficult to establish in a recently constructed water garden. Winter buds will sink to the bottom and arise again in spring with new growth. This species can be found in great abundance some years, and not at all other years.This plant is endangered in Italy as well as other places.