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10

This could be Blossom End Rot (BER) to which most of the cucurbit family are susceptible. It is caused by a calcium deficiency - see my answer here. However, given that some of your courgettes are growing normally, and those that are rotting are very small, I think the problem is almost certainly caused by inadequate pollination: No fruit, or fruit ...


7

This does sound like a pollination problem. There is a detailed article explaining how to hand-pollinate zucchini and cucumber plants here. Briefly, to hand-pollinate your flowers: Identify the female flowers (unlike the male ones, they have a small fruit behind them); Gently remove a male flower from the vine, without touching the anthers (see diagram), ...


6

Well, you can't stop zucchini(courgettes) from growing and they're prolific growers. But they keep pretty well, just pick them small which will encourage them to grow more, so maybe you can afford to give a few away (not just the huge ones). You could always plant fewer and space them out more so you can spot 'em easier before they get humungous. As for ...


5

It seems to be called zucchini tromboncino. Here are some pictures that all look like yours. North American zucchini = European courgette. (BTW some of the pictures fall somewhere between funny and not quite NSFW.)


4

Look at the stem, down near the base. Do you see some distinctive brown-orange sawdust-like material? If so, that's called frass, and your plant is being destroyed by one or more squash vine borers. The wikipedia article is really good, and shows pictures (at the bottom) of what to look for. We've tried killing the grubs in the stem, with a hatpin and ...


2

Without the benefit of a picture, I can suggest (quoting from "The Organic Gardener's Handbook of Natural Pest and Disease Control") the following, with my most likely guesses first: Downy mildew: Leaves mottled yellow between veins; purple spots on leaf undersides. ... thrives during cool, wet weather. Avoid wetting foliage. Maybe spray with potassium ...


2

If the blossom end turns black, that's blossom end rot, due to irregular water supply disabling calcium uptake, but the other cause of this problem is the female flower, particularly when the weather is wet. The flower traps water and causes the end of the burgeoning zucchini to start rotting. It usually only affects some of the fruits, and a way round it is ...


2

I've never had a problem with cucumber beetles nor do I have any experience using the following products but this is what's listed in my current Johnny's Selected Seeds catalog as their recommendations for cucumber beetles. They are all marked as organic. Azaguard - $134 Qt. Mycotrol O - $109 Qt. Pyganic* - 1.4% concentration for $69.95 Qt. or 5% ...


1

If mange tout1 is the same as what we call a "snap pea" or a "snow pea", it's not that it's immature, it's a different variety. (Well, I generally eat them before the peas fatten up, so they are immature, but I don't do this with "garden peas" (aka "English peas") because the pods aren't very tasty.) Hmm... what's a marrow? It looks like a member of C. ...



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