2 natives that you don’t want to mess with


1024px-Myoporum_laetum-(1)

Ngaio, Myoporum laetum. Photo: Wikicommons/Júlio Reis

You may think of all natives as friendly plants, but two common ones have a deadly secret.

Words: Nadene Hall


NGAIO

Ngaio flowe. Photo: Wikicommons/Avenue

Ngaio flower. Photo: Wikicommons/Avenue

Botanical name: Myoporum laetum
Status: deadly

Which parts are toxic: leaves are the most highly toxic, but bark, berries and stems will also poison anything that eats it.

About ngaio: shrub 5m x 3m, up to 10m, 4-10cm long leaves, bright green, shiny and sticky, white flowers with purple markings, pale-red-purple fruits

Found: mainly in coastal areas or lowland forests

Animals affected: cattle, sheep, goats, pigs, horses, alpaca, llamas
Symptoms: sensitivity to the sun (photosensitivity) especially around the head, skin teats and udder may swell, dry and peel off, severe stomach pain, loss of appetite, severe constipation (although there may be very dry, blood-stained faeces, jaundice, staggering, convulsions, sudden death.

Treatment: if caught early, symptoms of photosensitivity can be treated (shade, anti-inflammatories) but victims of this highly poisonous plant are often only found after death. Medication can help in some cases.


TUTU

 Coriaria arborea, tutu, native plant of New Zealand. Photo: Wikicommons/Rudolph89

Coriaria arborea, tutu, native plant of New Zealand. Photo: Wikicommons/Rudolph89

Botanical name: Coriaria

Status: all 10 species in NZ are very poisonous

Which parts are toxic: leaves, seeds and pollen but consider all parts toxic

About Tutu: species range from 50cm high shrub to straggly-looking tree up to 6m high, shiny green leaves and green flowers (September-March), long, hanging catkins, purple-black berries.
Found: in bush remnants, scrub, modified habitat from lowlands to mountains

Animals affected: all animals, and people

Symptoms: drooling, nausea, high state of nervousness/excitement, convulsions, exhaustion, death. The Lincoln Animal Health Laboratory* also report a “dummy” syndrome where sheep have been found standing still, reluctant to move and appearing to be blind with a rapid breath rate. These animals died within hours.
*Plant Poisoning in NZ, www.sciquest.org.nz

Treatment: medication can help in some cases


Which NZ native plant is the most toxic?
Tutu, which contains a poison called tutin which has powerful convulsant effects on animals and people.

Is it poisonous?
If you aren’t sure whether a plant or chemical is toxic and your animal (livestock, pet) has just eaten it, you are allowed to ring the National Poisons Centre free on 0800 POISON (0800 764 766). While their priority is the treatment of people, if they are not busy they are more than happy to help out with queries regarding animals.

When to call the vet
Immediately if you even suspect poisoning. Some livestock can be given supportive care, others will need to be euthanized.

NZ Lifestyle Block This article first appeared in NZ Lifestyle Block Magazine.

You may also like...

Practicing the principles of permaculture at Kahik... This enterprising couple don’t just want to create a green future for their family – they want to create a sustainable lifestyle for their who...
What to do in the garden in September Try planting baby turnips and some bee-friendly plants this month. Words: Jane Bellerby VEGETABLES • Stick with the tougher plants at this ...
10 tips for growing good seedling transplants You can save yourself a lot of money growing your own plants from seed, but getting them to transplant size can be frustrating. Words: Nadene H...
13 things to know about growing & eating rhub... Growing rhubarb is easy. Everyone knows if you eat rhubarb you need to add a little sugar, but there is another way to sweeten the deal. Words:...

Send this to friend