Hypericum elodes
Hypericum elodes
Hypericum elodes
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This plant carries a 6 months recovery warranty
More information
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.
Description
Hypericum elodes, the marsh St. John's wort, is an aquatic perennial plant used, in particular, as a ground cover for the edges and banks of water features. It can also be planted in shallow water (up to 15 cm deep). This St. John's wort forms a mat about 20 cm tall, its loose branches are adorned with small, deciduous, bluish-green leaves covered in hairs. Throughout the summer, numerous small yellow flowers appear. It thrives in full sun or partial shade in a moist to wet, non-limestone soil.
From the Hypericaceae family, Hypericum elodes is native to Western Europe. It is a typical plant of the European Atlantic climate. It grows in wet peat bogs, heathlands, and peat marshes. It differentiates itself from other St. John's worts by its hairy leaves. This aquatic perennial plant grows from a creeping stoloniferous crown. Its soft stems are rooting at the base, meaning they bear adventitious leaves and roots at each node. This allows it to form a mat adorned with small, woolly bluish-green leaves. From June to September, yellow cup-shaped flowers measuring 0.5 to 1 cm in diameter appear singly or in cymes of 3 to 10.
It is an excellent ground cover plant for dressing the banks of a stream or the edges of a pond or lake. It thrives in moist to wet soil. It is also an aquatic plant that enjoys having its feet in water, up to 15 cm deep. It is an oxygenating plant, essential for the good health of your water feature. Here are some plants for wet or aquatic areas that will complement the marsh St. John's wort beautifully: water forget-me-not with its small blue flowers, Iris sibirica Not Quite White with its large white flowers, and zebrinus zebra rush which adds height to the overall look.
Hypericum elodes in pictures
Flowering
Foliage
Plant habit
Botanical data
Hypericum
elodes
Hypericaceae
Western Europe
Planting and care
Hypericum elodes is the ideal ground cover for wet banks. Plant it in full sun or partial shade in a moist to wet soil. It can also be planted in water, up to 15 cm deep. This marsh St. John's wort is found in shallow water or on the banks of water bodies. It does not tolerate limestone soils (prefers neutral to acidic soils). Do not bury the root ball too deep when planting. The plant is hardy down to -7, or even -11°C. It is resistant to diseases, tolerates air pollution and a small amount of sea breeze.
Remove faded flowers as they appear. In March, cut back the stems to 5 cm above the ground and remove any wilted leaves.
Planting period
Intended location
Care
Planting & care advice
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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).
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 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.
The planting period indicated on our website applies to regions in USDA Zone 9a (East Coast and Midlands: Dublin, Wexford, Waterford, Kilkenny, Portlaoise). It will vary depending on where you live:
- On the west coast and in the north-west (Galway, Limerick, Sligo, Donegal, Westport), delay planting by 1 to 2 weeks in spring and bring it forward by 1 to 2 weeks in autumn compared to the dates given, preferably choosing periods without strong winds.
- In the inland hills and plateaus (Wicklow Mountains, Macgillycuddy’s Reeks, Connemara, Killarney), it is best to plant in spring (April–May) or autumn (September–October), avoiding periods of waterlogged soil in winter and strong winds, which pose the main risk to newly planted trees in these areas.
The flowering period indicated on our website applies to regions in USDA Zone 9a, such as the East Coast and Midlands, including Dublin, Wexford, Waterford, Kilkenny and Portlaoise.
This will vary depending on where you live:
- On the west coast and in the northwest (Galway, Limerick, Sligo, Donegal and Westport), it will be delayed by one to two weeks compared to the given dates, due to stronger Atlantic winds and less spring sunshine.
- In the inland hills and plateaus (the Wicklow Mountains, the Macgillycuddy's Reeks, Connemara and Killarney), flowering will be delayed by two to three weeks. Flowering mainly occurs between May and July, with the limiting factors being less frost and more of the excessive humidity, strong winds and lack of sunshine that are characteristic of these areas.
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