You can use any old carpet, l am currently using old bits of cardboard. cut a circle out, make a slit and slid over the stem, seems to be working, and no cost. Good luck.
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Originally Posted by chaos
Hi, I've never grown brassicas before,but picked up 6 broccoli seedlings a few weeks ago from a local allotment sale. I have since discovered that to protect them from cabbage root fly, it's advisable to put 'collars' around the base of the stem. I recently read that most of those for sale are made from whale hide which I naturally won't to buy. I know one can use carpet underlay too, but what kind? The oldfashioned felt type or would the newer foam one's be ok for the purpose? I guess the old type would hopefully be biodegradeable.
Does anybody have experience or suggestions?
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