Tag Archives: diamond back moth

Biological control

This chiffchaff (gransanger) is doing its best to control the invasion of diamond back moths (kålmøll) larvae! On cress (karse) and radish (reddik) being grown for seed! I also observed house sparrows (gråspurv) feeding on them earlier today! I was cheering them on!
http://www.edimentals.com/blog/?p=23073

Diamondbacks are back :(

There’s been a major arrival of diamondback moths (kålmøll) here since yesterday and there are hundreds of this major Brassica pest in the garden today!  I am thankfully only growing perennial kales (Brassica oleracea) and resistent sea kale (Crambe maritima) this year, both of which are already close to maximum yield and unlikely to be severely affected by the moth. This also means I don’t need to use any form of protection (horticultural fleece / fiberduk) which is probably a major source of agricultural microplastics. Problem solved!

Sea kale/strandkål (Crambe maritima):

Perennial kales (Brassica oleracea):

Rapunsel

Phyteuma spicatum is the most popular bee plant in my garden at the moment and a great edimental….a very old root vegetable in Europe, mentioned already by Gerard’s Herball from 1597, but best known as a vegetable in France and Germany.
These pictures are from a bed in my garden where I originally planted Phyteuma nigrum (P. spicatum subsp. nigra) many years ago. It must have crossed with other plants elsewhere in my garden as there’s now a range of colours from white to almost black!
The name rapunsel is related to rapa (turnip) due to its use as a root vegetable!

This video was taken in June 2016 during the big diamond back moth invasion..

House sparrow: better late than never

While eating breakfast this morning I spotted these house sparrows (gråspurv) eating diamond back moth (kålmøll) larvae from the undersides of these ragged jack kale plants, sown as a salad crop, but long since given up to the moths… Better late than never I suppose!!

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You can just see the larvae in this male’s beak!
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You can just see a larva in this male’s beak!

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Diamond back moth invasion

One of the worst invasions of diamond back moth / kålmøll happened a couple of days ago….here is a video showing hundredds swarming over one of my Lily White sea kale plants which is about to flower. Luckily they never do much damage to sea kale (Crambe maritima) as the harvest is over before they arrive, one of the big advantages of perennial brassica…on the other hand, annual brassica crops are being planted now in my area…they have little chance against these tiny moths….
I blame the rapeseed oil industry for this…they don’t overwinter here, but they migrate passively on warm winds from central Europe and Russia, even reaching Svalbard and Northern Norway…