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Ruud Kleinpast: Eyes on your pests

Author
Newstalk ZB,
Publish Date
Sat, 18 Oct 2025, 11:43am
(Photo / File)
(Photo / File)

Ruud Kleinpast: Eyes on your pests

Author
Newstalk ZB,
Publish Date
Sat, 18 Oct 2025, 11:43am

A few things to look for in October: 

Passionvine Hoppers do a bit of damage from late October/Early November till March-April 

These are the problematic insects that are common in the north (and for the past few years, also around Christchurch – they’re spreading South! 

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Adult passionvine hoppers plus one nearly-mature fluffybum

Most of the damage is cased when the bugs are growing bigger and older (later in spring); by then these insects can jump away from insecticides applied; they clever enough to avoid being immersed. 

CONTROL and PREVENTION: 

Keep an eye on the new fluffy bums hatching in your garden right now!!! Those tiny nymphs often congregate in large flocks at the ends of new growth; they are still very feeble in their movement and won’t be able to escape a cloud of fly-spray aimed at them on a wind-still morning 

Spray these young Passionvine Hoppers in October with a good dose of fly-spray; your only chance to hit them before they become troublesome.

Slugs and Snails are a real pest in the garden at this time of the year; moisture and new plant growth encourages them 

Control measures that work:  

  • Weed control will expose them to predators (thrushes) 
  • Using Bait pellets in a pottle, dug into soil: take-away container with lid on and bait inside; holes cut in the side of the container let slugs and snails in; but not dogs and cats
  • Alternative version is to use some off-cuts (15-30 cm long) of plastic waste-pipe, diameter 50 to 75 mm, which allows access to slugs and snails, but not to birds.  Put some bait in the pipes and anchor them down with a heavy brick 
  • Encourage Carabid beetles (Ground beetles): they often feed on slugs and snail juveniles and eggs

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Slug and Snail bait station

And then there are Mites, especially Two-Spotted SPIDER MITES 

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Tiny, eight-legged ACARI that love to suck the fluids out of the leaves of your plants in spring, summer and autumn. 

Tetranychus urticae is a cosmopolitan species of mite that causes heaps of damage. Control is not very difficult: there are some good miticides (note: miticides, not insecticides) on the market that will deal to most outbreaks. However, mites are known for becoming quite tolerant of chemical compounds.

Mineral oils and the so-called fatty acids are also effective on spidermites, as is a couple of repeat sprays of Neem oil.

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