Equisetum ramosissimum var. japonicum

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Synonyms

Equisetum japonicum

Aquatic Bogs
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A vigorous evergreen perennial to 1.2m tall, with hollow, black-banded, bamboo-like stems. A good vertical accent plant for a pond margin, but should be grown in a container to restrict its roots as it has the potential to become a nuisance

Position

Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

1-1.5 metres

Max Spread

1-1.5 metres

Size

Time to Maturity
2–5 years
Max Spread
1-1.5 metres
Max Height
1-1.5 metres

Growing Conditions

Chalk Clay Loam Sand
Moisture
Poorly–drained
pH
Acid or Alkaline or Neutral

Position

Full sun Partial shade
Aspect
East–facing or North–facing or South–facing or West–facing
Exposure
Exposed or Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

  • H1A: under glass all year (>15C)
  • H1B: can be grown outside in the summer (10 - 15)
  • H1C: can be grown outside in the summer (5 - 10)
  • H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
  • H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
  • H4: hardy through most of the UK (-10 to -5)
  • H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
  • H6: hardy in all of UK and northern Europe (-20 to -15)
  • H7: hardy in the severest European continental climates (< -20)
H6

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Equisetaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Suckering
Genus
Equisetum are also known as horsetails or living fossils as they are the only living genus in Equisetaceae, a family of vascular plants which reproduce by spores rather than seeds. Plants have a rush-like appearance.
Name Status
Correct

How to Grow

Cultivation

Grow in moist to boggy soil in sun or partial shade. To grow in a pond, plant in an aquatic basket lined with hessian and filled with heavy loam. Add a thick topdress of gravel prior to submerging, to prevent the growing medium clouding the water. Submerge no deeper than 30cm. See pond plants and bog gardens for further advice

Propagation

Propagate by division

Suggested planting locations and garden types

  • Architectural
  • Patio and container plants

Pruning

Prune out dried and brown stems in spring

Pests

Generally pest-free

Diseases

Generally disease-free