Hardy Water Lily, Waterlily
Nymphaea helvola

Family: Nymphaeaceae (nim-fee-AY-see-ee) (Info)
Genus: Nymphaea (NIM-fee-uh) (Info)
Species: helvola (HEL-vol-a) (Info)
Additional cultivar information:(aka Pygmaea Helvola)
» View all varieties of Waterlilies

Height:

Unknown - Tell us

Spacing:

18-24 in. (45-60 cm)

24-36 in. (60-90 cm)

Hardiness:

USDA Zone 4a: to -34.4 C (-30 F)

USDA Zone 4b: to -31.6 C (-25 F)

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

Bloom Color:

Rose/Mauve

Red

Gold (Yellow-Orange)

Bloom Time:

Mid Summer

Late Summer/Early Fall

Foliage:

Herbaceous

Shiny/Glossy-Textured

Mottled

Other details:

Very high moisture needs; suitable for bogs and water gardens

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

Patent Information:

Unknown - Tell us

Propagation Methods:

By dividing rhizomes, tubers, corms or bulbs (including offsets)

Seed Collecting:

Unknown - Tell us

Regional

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

Ames, Iowa

Villas, New Jersey

Staten Island, New York

Pickens, South Carolina

Summerville, South Carolina

San Antonio, Texas

Utopia, Texas

Stanwood, Washington

show all

Gardeners' Notes:

2
positives
1
neutral
0
negatives
RatingContent
Neutral

On Jan 20, 2013, altagardener from Calgary, AB (Zone 3b) wrote:

According to Slocum and Robinson (Water Gardening: Water Lilies and Lotuses), 'Helvola' is likely a hybrid, Nymphaea tetragona x N. mexicana.

Positive

On Nov 29, 2009, bonehead from Cedarhome, WA (Zone 8b) wrote:

I've had this in a gallon container since 2004 and it has not multiplied very much. Very small dainty yellow flowers all summer, but sparsely (usually only one bloom at a time). Does quite well in my tiny pond, well suited to the size.

Positive

On Aug 10, 2004, Charlotteda from Pickens, SC (Zone 7a) wrote:

Lovely, very small lily. Grows well but maintains small spread.