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I was reading up on garlic fertilizing, and was wondering how much potash to give my garlic plants. I don't know much about it, except the fact it is garlic from a single clove off a bulb.

black thumb
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1 Answers1

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Garlic’s demand for K ranges from 125 to 180 kg K2O/ha (Bertoni and Morard du L. Espagnacq, 1988; Zink, 1963).

If you're autumn planting where this is Oct-Nov, then the RHS advises

 Apply a general fertiliser, such as Growmore, at planting time at 2oz per sq yd (50g per sq m) followed by a light dressing of 1oz sq yd (25g sq m) of sulphate of potash in February.

But if your soil has plenty of potassium, you should not need to add more.

Graham Chiu
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