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Nymphaea Hermine

Nymphaea Hermine
Water Lily, Waterlily

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This plant carries a 12 months recovery warranty

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A medium-sized water lily that produces white flowers with a golden heart in the shape of a tulip, measuring 12.5 cm in diameter. Its leaves are heart-shaped, with an open sinus, in a beautiful solid dark green. This variety is suitable for medium-sized ponds, its rootstocks should be planted at a depth of 30 cm to 60 cm. A classic, reliable and floriferous variety.
Flower size
13 cm
Height at maturity
20 cm
Spread at maturity
1.50 m
Exposure
Sun
Hardiness
Hardy down to -23°C
Soil moisture
Damp soil
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Best planting time March to April
Recommended planting time March to June
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Flowering time June to September
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Description

The Nymphaea 'Hermine' is an old variety of hardy water lily with a medium growth habit, widely used by landscapers for its timeless classicism and dazzling white flowers. The heart-shaped leaves of this water lily, in a uniform green colour, provide a beautiful backdrop for the flowering throughout the summer. This variety is ideal for medium-sized ponds, with its rhizome planted at a depth of 30 to 60 cm.

The 'Hermine' Water Lily is a horticultural creation by Joseph Bory Latour-Marliac dating back to 1880. It is a aquatic perennial with deciduous foliage, belonging to the Nymphaeaceae family. This plant develops numerous floating leaves measuring 15 to 18 cm in diameter in mature plants, starting from spring. The leaves are heart-shaped with an open sinus, in a dark green colour. The plant, of medium vigour, spreads to about 90 cm. Flowering usually begins in June and continues until September. The flowers, with 17-20 white petals in a tulip shape, measure between 12 and 13 cm in diameter. They open on the water's surface. These corollas open during the day and close in the evening. Their centre is adorned with bright yellow stamens that enhance the pure white of the petals. 

Each flower lives for 4 to 5 days before withering, it returns underwater and is then replaced by another flower. The flowering is followed by the formation of fruits containing numerous seeds. The fruit ripens underwater and releases the floating seeds that will eventually sink and germinate in the mud. Water lilies are hardy as long as their rhizome does not freeze in winter. It is important to ensure that the water does not freeze at the depth where they are planted.

Choose varieties of water lilies that are easy, hardy, and floriferous, and above all, those that have a size proportionate to your pond. With their perfectly shaped flowers, Nymphaeas are among the most beautiful perennial pond plants. Most of them bloom for long weeks, until the beginning of autumn. The water lily is an essential aquatic plant for the proper balance of a garden pond, as it contributes to the oxygenation of the water. Its leaves floating on the water's surface will provide shade and shelter for your fish, which in turn will protect them from predatory insects such as aphids.

The genus name comes from the Greek nymphaia and the Latin name nymphaea, which means "water lily". They were inspired by the nymphs of Greek and Latin mythology. Nymphaea bears flowers that are sometimes diurnal, sometimes nocturnal, and occasionally fragrant.

Nymphaea Hermine in pictures

Nymphaea Hermine (Plant habit) Plant habit

Flowering

Flower colour white
Flowering time June to September
Inflorescence Solitary
Flower size 13 cm

Foliage

Foliage persistence Deciduous
Foliage colour dark green

Plant habit

Height at maturity 20 cm
Spread at maturity 1.50 m
Growth rate normal
Suckering/invasive plant

Botanical data

Genus

Nymphaea

Cultivar

Hermine

Family

Nymphaeaceae

Other common names

Water Lily, Waterlily

Origin

Cultivar or hybrid

Planting and care

The rhizome of the 'Hermine' water lily should be planted from March to June at a depth of 30 to 60 cm (up to 80 cm). 

Plant the rhizomes of hardy water lilies in good garden soil, rich in clay or silt and free of stones (never use potting soil, it is too rich and promotes the development of algae). Give them the sunniest spot in the water feature. Space each rhizome at least 1 m apart and plant them by inserting them vertically into the soil up to the collar. In the case of a natural water feature (pond or lake), make sure that the water level remains fairly stable and that the water is neither too acidic nor too alkaline (desired pH between 6.5 and 7.5).

The rhizomes can be planted in a wicker basket or a fine mesh basket that is sunk in the desired location. For classic hardy water lilies, use a pot with a diameter of 40 cm (wider than it is tall). If the bottom is muddy, simply attach a stone to the rhizome and throw the whole thing to the desired location. Never leave the Nymphaea rhizomes exposed to the sun or air to prevent them from drying out; plant them as soon as you receive or purchase them.

If you have fish in your pond, it is preferable to spread a thick layer of large gravel on the surface of the planted pot to deter them from digging into the soil and thus fouling the water. The development of water lilies will be optimal if they are planted in containers suitable for their growth.

Water lilies are hungry plants: distribute a balanced slow-release fertiliser at planting, and then every year at the beginning of the growing season. During the summer, remove excessive leaves that grow in the centre of the clump and keep only the most vigorous ones. Also remove yellowed or stained leaves as well as aquatic weeds that emerge from the surface.

Planting period

Best planting time March to April
Recommended planting time March to June

Intended location

Suitable for Pond
Hardiness Hardy down to -23°C (USDA zone 6a) Show map
Ease of cultivation Amateur
Planting density 1 per m2
Exposure Sun
Soil pH Neutral
Soil type Clayey (heavy), Silty-loamy (rich and light)
Soil moisture Damp soil, Flooded, muddy, submerged in water.

Care

Pruning No pruning necessary
Disease resistance Very good
Overwinter Can be left in the ground

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