This interested me and so I thought I’d share. It has to do with Garden ph testing. How do you know the difference between a base and an acid?
You can test the ph level with:
Beets,which will change color from acid red to purple in a base solution
Blackberries,will change from red (in acidic soil) to blue in a base environment
Blueberries,are blue at a ph level of 2.8 – 3.2
Cherries,are red in acid and turn purple in a base solution
Yellow curry powder at a ph 7.4 changes to red at a ph of 8.6
Delphinium petals are bluish red in acid and violet blue in a base.
Geraniums are orange red in acid, change to blue in a base.
Grapes are red in acid, changes to violet blue in a base