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Myriophyllum spicatum
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Dispatch by letter from €3.90.
Delivery charge from €5.90 Oversize package delivery charge from €6.90.
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This plant carries a 12 months recovery warranty
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We guarantee the quality of our plants for a full growing cycle, and will replace at our expense any plant that fails to recover under normal climatic and planting conditions.
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Myriophyllum spicatum, or spiked watermilfoil, is an aquatic perennial from temperate regions. It has a stoloniferous base that produces very long floating stems, up to 3m (10ft) long, reaching the water surface to form a dense yellow-green carpet of finely divided, feathery leaves. The inconspicuous flowers rise above the surface in spikes of small white flowers, pink when in bud. It is an excellent plant for oxygenating and purifying slow to stagnant, even polluted water. Its very vigorous growth should be limited as it can quickly become invasive.
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Myriophyllum spicatum belongs to the Haloragidaceae family. It is native to Europe, Asia, and North Africa. It now proliferates worldwide in stagnant or slow-flowing freshwater. It is one of the most common aquatic plants in ponds and waterways. It forms loose floating stems that can reach 3m (10ft) (sometimes 6m (20ft)) which are often reddish and branch out and grow horizontally on the surface of the wate. It produces spikes of tiny white flowers 1 to 2mm (0in), pink in bud, 15cm (6in) above the water. The finely dissected foliage appears yellow-green below the surface and bluish-green above water. The leaves are arranged in whorls of 12 to 24 leaflets around the stems and are semi-evergreen. The roots anchor into the soil to 50cm (20in) deep.
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Plant spiked watermilfoil in a pond, in baskets filled with loamy, humus-rich soil, in full sun under 10 to 150cm (4 to 59in) of water. Weigh down the watermilfoil when planting as it has few roots. This plant is hardy to about -15°C (5°F) in full sun or partial shade. It shows great tolerance to pH and water hardness. The stems may suffer from frost but will reappear the following spring. Where it thrives, its exceptional vigour can make it invasive. Therefore, it needs to be controlled either by installing it in a basket (when possible) or by regularly removing some of the stems.
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Spiked watermilfoil is a first-rate oxygenating and purifying plant. It can concentrate nitrogen and phosphorus. Through its filtering action, it helps stabilise the delicate balance of a garden pond. Its presence will contain the growth of green algae. If the pond is big enough it is better to plant two to three species of submerged plants to vary the foliage. This plant can also be used in tropical fish aquariums where you must provide sufficient light.
Flowering
Foliage
Plant habit
Botanical data
Plant watermilfoil in a pond, in baskets of loamy, humus-rich soil, in full sun, under 10 to 150 cm (4 to 59in) of water. Weigh down the watermilfoil when planting, as it has few roots. This plant is hardy to about -15°C (5°F) in full sun or partial shade. It also shows great tolerance to pH and water softness. The stems may suffer from frost but will reappear the following spring. The young shoots can be eaten by fish. Algae or debris in the water may suffocate the leaves. Where it thrives, it can become invasive, so control it either by installing it in a basket (when possible), or regularly removing some of the stems.
Planting period
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Care
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Hardiness is the lowest winter temperature a plant can endure without suffering serious damage or even dying. However, hardiness is affected by location (a sheltered area, such as a patio), protection (winter cover) and soil type (hardiness is improved by well-drained soil).
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The flowering period indicated on our website applies to countries and regions located in USDA zone 8 (France, the United Kingdom, Ireland, the Netherlands, etc.)
It will vary according to where you live:
In temperate climates, pruning of spring-flowering shrubs (forsythia, spireas, etc.) should be done just after flowering.
Pruning of summer-flowering shrubs (Indian Lilac, Perovskia, etc.) can be done in winter or spring.
In cold regions as well as with frost-sensitive plants, avoid pruning too early when severe frosts may still occur.
The planting period indicated on our website applies to countries and regions located in USDA zone 8 (France, United Kingdom, Ireland, Netherlands).
It will vary according to where you live:
The harvesting period indicated on our website applies to countries and regions in USDA zone 8 (France, England, Ireland, the Netherlands).
In colder areas (Scandinavia, Poland, Austria...) fruit and vegetable harvests are likely to be delayed by 3-4 weeks.
In warmer areas (Italy, Spain, Greece, etc.), harvesting will probably take place earlier, depending on weather conditions.
The sowing periods indicated on our website apply to countries and regions within USDA Zone 8 (France, UK, Ireland, Netherlands).
In colder areas (Scandinavia, Poland, Austria...), delay any outdoor sowing by 3-4 weeks, or sow under glass.
In warmer climes (Italy, Spain, Greece, etc.), bring outdoor sowing forward by a few weeks.