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Home / Tree Encyclopedia / Water Gum

Water Gum

Tristaniopsis laurina · Myrtaceae

12mMature height
0Councils: no permit needed
0Councils: exempt under a height limit
20Councils: permit required
Water Gum (Tristaniopsis laurina) growing in Sydney
Water Gum · typical mature form

Do you need a permit?

Water Gum is a protected tree in effectively every council Pro Climbing Tree Services covers. Expect to need a tree permit, or a development application where the property is heritage listed or in a heritage conservation area.

How to identify it

A small neat tree with smooth mottled bark that sheds in patches to reveal cream and grey tones. Glossy dark green leaves with coppery new growth, and small bright yellow flowers in summer.

Where it grows in Sydney

Naturally a creek line species, and now one of the most planted small street trees across the Inner West, Eastern Suburbs, Lane Cove, Ryde and City of Sydney. Very common in narrow verges and courtyard gardens.

Common problems

  • Frequently a council street tree, so private work is not permitted
  • Can be crowded by surrounding development and decline
  • Flower and fruit drop onto cars and paving
  • Sensitive to root zone disturbance during renovations

What removal involves

Small size makes the physical job easy, but it is a protected native everywhere on this list and is frequently a public tree. Confirm ownership first. On private land, councils with low thresholds such as Waverley at 3m and Georges River at 3m or 100mm at ground level will capture most established specimens.

Council permit rules, council by council

Status below is for a tree on private land that has passed the council's size threshold. Heritage items, heritage conservation areas, significant tree registers, biodiversity mapping and conditions of development consent override every exemption shown here.

CouncilStatusWhat it means
Northern Beaches Permit required Not on Council's exempt species list, so a tree permit is required once the tree passes the size threshold.
Ku-ring-gai Permit required Not on Council's exempt species list, so a tree permit is required once the tree passes the size threshold.
Hornsby Shire Permit required Not on Council's exempt species list, so a tree permit is required once the tree passes the size threshold.
The Hills Shire Confirm with Council Council holds its species exemptions in a document rather than on its website, so confirm this species with Council before treating removal as exempt. Size thresholds apply in the meantime.
Blacktown City Permit required Council does not run a species exemption list. A permit is required once the tree passes the size threshold, and each tree is assessed on its own merits.
North Sydney Permit required Not on Council's exempt species list, so a tree permit is required once the tree passes the size threshold.
Willoughby Permit required Not on Council's exempt species list, so a tree permit is required once the tree passes the size threshold.
Lane Cove Permit required Not on Council's exempt species list, so a tree permit is required once the tree passes the size threshold.
City of Ryde Permit required Not on Council's exempt species list, so a tree permit is required once the tree passes the size threshold.
Hunters Hill Permit required Not on Council's exempt species list, so a tree permit is required once the tree passes the size threshold.
City of Sydney Permit required Not on Council's exempt species list, so a tree permit is required once the tree passes the size threshold.
Inner West Permit required Not on Council's exempt species list, so a tree permit is required once the tree passes the size threshold.
Woollahra Permit required Not on Council's exempt species list, so a tree permit is required once the tree passes the size threshold.
Waverley Permit required Not on Council's exempt species list, so a tree permit is required once the tree passes the size threshold.
Randwick Permit required Not on Council's exempt species list, so a tree permit is required once the tree passes the size threshold.
Bayside Permit required Not on Council's exempt species list, so a tree permit is required once the tree passes the size threshold.
Georges River Permit required Not on Council's exempt species list, so a tree permit is required once the tree passes the size threshold.
Strathfield Permit required Not on Council's exempt species list, so a tree permit is required once the tree passes the size threshold.
Burwood Confirm with Council Council holds its species exemptions in a document rather than on its website, so confirm this species with Council before treating removal as exempt. Size thresholds apply in the meantime.
Canterbury-Bankstown Permit required Not on Council's exempt species list, so a tree permit is required once the tree passes the size threshold.

Frequently asked questions

Is Water Gum small enough to be exempt?

Sometimes. Under Lane Cove's 4m and 150mm trunk thresholds or Ryde's 4m and 150mm DBH thresholds a young specimen may fall outside control. Waverley captures anything 3m or more, so measure before assuming.

Related trees

Important note on council rules

This encyclopedia is a practical guide for Sydney property owners, not legal advice. Council tree rules change, and exemptions are frequently overridden by heritage listings, heritage conservation areas, significant tree registers, biodiversity mapping, endangered ecological communities and conditions attached to development consent. Always confirm the current rules with your council for your specific address before any tree work begins, or ask us to check it for you.

Photo by Krzysztof Golik via Wikimedia Commons, CC BY-SA 4.0

Not sure where your tree stands?

Our arborists work across 20 Sydney councils every week. We will identify the species, check the rules for your address and handle the permit application if one is needed.