Chamaecyparis lawsoniana ‘Columnaris’ (Lawson cypress ‘Columnaris’)

Botanical name

Chamaecyparis lawsoniana ‘Columnaris’

Other names

Lawson cypress ‘Columnaris’

Genus

Chamaecyparis Chamaecyparis

Variety or Cultivar

Foliage

Evergreen

Tree shape

Ascending branches, Narrowly columnar

Toxicity

Contact with foliage may irritate skin.

Create your free Shoot garden

Create your free SHOOT garden and make a record of the plants in your garden.

Add your own photos, notes, get monthly email reminders on how to care for your plants, and connect with other gardeners. Get started now.

Colour

Blue, Silvery-grey in All seasons

How to care

Watch out for

Specific pests

Aphids , Juniper scale , Shoot-boring moths

Specific diseases

Honey fungus , Phytophthora root diseases

General care

Pruning

No pruning required. If formed into a shape, such as a hedge, will need trimming twice a year.

Propagation methods

Seed, Semi-hardwood cuttings

Get access to monthly care advice

Create a free SHOOT account and get instant access to expert care advice for this and other plants in your garden.

You’ll also receive handy monthly email reminders of what needs doing. Create your free account.

Where to grow

Chamaecyparis lawsoniana ‘Columnaris’ (Lawson cypress ‘Columnaris’) will reach a height of 12m and a spread of 2.5m after 20-50 years.

Suggested uses

Architectural, City, Hedging/Screens, Low Maintenance, Foliage only

Cultivation

Plant in moist but well-drained soil. Can tolerate chalk soils, but prefers slightly acidic soil.

Soil type

Chalky, Clay, Loamy, Sandy (will tolerate most soil types)

Soil drainage

Moist but well-drained, Well-drained

Soil pH

Acid, Neutral

Light

Full Sun

Aspect

North, 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 9, Zone 8, Zone 7, Zone 6, Zone 5, Zone 4

Defra’s Risk register #1

Plant name

Chamaecyparis lawsoniana ‘Columnaris’ (Lawson cypress ‘Columnaris’)

Common pest name

Scientific pest name

Lamprodila festiva

Type

Insect

Current status in UK

Absent

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

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

General biosecurity comments

Beetle that is native to Europe; whose larvae damage certain ornamental conifer species. Absent in the UK; so industry should source plants carefully and monitor for its presence.

Defra’s Risk register #2

Chamaecyparis lawsoniana ‘Columnaris’ (Lawson cypress ‘Columnaris’)

Cypress twig; borer

Argyresthia cupressella

Insect

Present (Widespread)

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

Has spread following introduction; little evidence of significant damage. Stakeholder groups may wish to monitor.

Defra’s Risk register #3

Chamaecyparis lawsoniana ‘Columnaris’ (Lawson cypress ‘Columnaris’)

Stubby-root nematode

Trichodorus cedarus

Nematode

Absent

Polyphagous nematode pest from Asia; occasionally intercepted by the UK. Causes direct feeding damage on plant roots and has the potential to vector viruses.

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?

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

Leave a Reply

Your email address will not be published. Required fields are marked *