By Malibach
United Kingdom 
I have planted perpetual spinach and various other greens which have all been attacked -- edge of leaf has been eaten and on some plants also centre of leaf -- I have checked regularly for evidence of insect infestation but found none -- neither have I found any evidence if slug/snail trails etc
HELP
21 Sep, 2010
Answers
I would go out at night with a flashlight and look for caterpillars. They're so good at hiding in the day, that's sometimes the only way to find them.
21 Sep, 2010
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I do not know what is wrong with your spinach, but I have given up growing perpetual spinach many years ago, as they are always attacked by tiny worms found inside the tissue of the leaves.
21 Sep, 2010