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Nymphaea alba Delicata

Nymphaea Alba Delicata
Water Lily, Waterlily, Pond Lily

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A hardy water lily of medium vigour, which produces pure white flowers measuring 10cm in diameter, very classic in shape. Its leaves, with a diameter of 12 to 15cm, are a shiny dark green. This Nymphea is suitable for medium-sized bodies of water, its rootstock should be planted under 20 to 60cm of water.
Flower size
10 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

Nymphaea alba 'Delicata' is an old French cultivar that is still sought after for its perfectly shaped white flower. The plant has medium vigour, its leaves are a beautiful glossy green, and it blooms throughout the summer season. This hardy water lily is suitable for medium-sized bodies of water. A classic in aquatic gardens!

Nymphaea alba 'Delicata' is sometimes marketed under the name Nymphaea 'Delicata'. It is a horticultural cultivar by Lagrange (France) dating back to the 1910s. It is a aquatic perennial with deciduous foliage that belongs to the Nymphaeaceae family. This plant develops numerous floating leaves measuring 12 to 15cm in diameter in mature plants starting from spring. The leaves are almost round and have a slightly open sinus. Their upper surface is a vibrant green and glossy. The plant will reach 20cm in height when flowering and spread over 90cm to 1.20m. The abundant flowering usually begins in June and continues until late summer. The single flowers measure 10cm in diameter and float on the water. Their yellow stamen centre is very visible. These corollas open during the day and close at night. Each flower lives for 4 to 6 days before wilting, it returns underwater and is replaced by another flower. The flowering is followed by the formation of fruits containing numerous seeds. The fruit ripens underwater and releases 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 installed.

Choose varieties of water lilies that are easy, hardy, and floriferous, and above all, ones that are proportionate to your pond. With their perfectly shaped flowers, water lilies are among the most beautiful pond plants. Most of them bloom for long weeks, until early autumn. Water lilies are essential aquatic plants for maintaining the balance of a garden pond, as they contribute to water oxygenation. Their 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 produces flowers that are sometimes diurnal, sometimes nocturnal, and occasionally fragrant.

Flowering

Flower colour white
Flowering time June to September
Inflorescence Solitary
Flower size 10 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

Alba Delicata

Family

Nymphaeaceae

Other common names

Water Lily, Waterlily, Pond Lily

Origin

Cultivar or hybrid

Planting and care

Rustic water lilies can withstand the harshness of winter if the depth of the pond allows them to escape freezing. The rootstock of  the Nymphaea alba 'Delicata' water lily should be planted from March to June under 20 to 60cm of water. Plant the rootstocks of rustic water lilies in good garden soil, rich in clay or silt and free from stones (never use horticultural compost, as it is too rich and promotes the growth of algae). Give them the sunniest spot in the water feature. Space each rootstock at least 1m 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 rootstocks can be planted in a wicker basket or a fine mesh basket that is sunk in the desired location. For classic rustic water lilies, use a pot with a diameter of 40cm (wider than it is tall). If the bottom is muddy, simply attach a stone to the rootstock and throw the whole thing to the desired location. Never leave the Nymphaea rootstocks 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 discourage them from digging into the soil and thus soiling 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 fertilizer at planting, and then every year at the beginning of the growing season (for example: Osmocote 10-11-18-2 with a duration of 5-6 months). During the summer, remove leaves that grow in excessive numbers in the centre of the clump, keeping only the most vigorous ones. Also remove yellowed or stained leaves, as well as emerging aquatic "weeds".

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

Care

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

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