Juncus maritimus (Sea rush )

Botanical name

Juncus maritimus

Other names

Sea rush , Seaside rush, Lesser sharp sea-rush, Juncus broteroi

Genus

Juncus Juncus

Species

J. maritimus - J. maritimus is an upright, clump-forming, borderline hardy, rhizomatous, evergreen perennial with sharp stems bearing cylindrical, sharp-pointed, mid-green leaves and, in summer, upright, open panicles of small, light green flowers spikelets followed by pale brown seeds.

Foliage

Evergreen

Habit

Clump-forming, Upright

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Colour

Flower

Light green in Summer

Foliage

Mid-green in All seasons

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How to care

Watch out for

Pests

Generally pest-free

Diseases

Generally disease-free

General care

Pruning

Tidy by removing dead stems and any spent flowerheads in spring

Propagation methods

Division

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Monthly care advice

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Where to grow

Juncus maritimus (Sea rush ) will reach a height of 1m and a spread of 1m after 2-5 years.

Suggested uses

Aquatic, Bog garden, Waterside

Cultivation

Thrives in moist, coastal sites in full sun. Do not allow to dry out. Protect with a thick, dry mulch in winter.

Soil type

Sandy, Loamy

Soil drainage

Boggy damp conditions, Moisture-retentive

Soil pH

Acid, Alkaline, Neutral

Light

Partial Shade, Full Sun

Aspect

South, East, West

Exposure

Exposed, Sheltered

UK hardiness Note: We are working to update our ratings. Thanks for your patience.

Hardy (H4)

USDA zones

Zone 10, Zone 9, Zone 8

Defra's Risk register #1

Plant name

Juncus maritimus (Sea rush )

Common pest name

Scientific pest name

Xiphinema bricolense

Type

Nematode

Current status in UK

Absent

Likelihood to spread to UK (1 is very low - 5 is very high)

2

Impact (1 is very low - 5 is very high)

4

General biosecurity comments

EU regulated nematode pest with the potential to introduce non-European viruses. EU listing and regulations on soil/growing material associated with planting material help to mitigate the risk of entry.

Defra's Risk register #2

Plant name

Juncus maritimus (Sea rush )

Common pest name

Scientific pest name

Bactra bactrana

Type

Insect

Current status in UK

Absent

Likelihood to spread to UK (1 is very low - 5 is very high)

2

Impact (1 is very low - 5 is very high)

3

General biosecurity comments

Moth whose larvae feed on sedge and grass stems; found (in 2014) to be damaging glasshouse peppers in Greece. Industry may wish to monitor for its presence.

About this section

Our plants are under greater threat than ever before. There is increasing movement of plants and other material traded from an increasing variety of sources. This increases the chances of exotic pests arriving with imported goods and travellers, as well as by natural means. Shoot is working with Defra to help members to do their part in preventing the introduction and spread of invasive risks.

Traveling or importing plants? Please read "Don't risk it" advice here

Suspected outbreak? Click here for contact details to report to the relevant authority.

Date updated: 7^th March 2019 For more information visit: https://planthealthportal.defra.gov.uk/