It's an easy way to check the acidity of your soil. Boiled red cabbage water can be used as a simple DIY soil pH test by mixing it with soil and observing the color change after a few hours. The ...
Make an acid-base indicator. Dr Yan uses some very colourful science to find out what's acidic in his kitchen. Take 1/4 red cabbage. Finely slice the cabbage. Put all the chopped-up cabbage into a ...
In a British back garden, a leftover red cabbage can rival pricey pH kits. This simple colour trick shows whether your soil ...