PH Scale (My Version Of)

This chart is a work in progress, and I'm not a botanist or chemist... I put it together as a guide for myself re: my plants and how they are compatible with the soil in my garden based on some of the types of things I compost. There are a few items on there that I don't compost, such as milk, that I've included just for interest.

(If you double click on the chart you'll be able to see a larger version of it.)

I've noticed an interesting thing: I drink a lot of coffee, which is acidic, and I compost all of the grinds and filters. On the other hand, we eat very few eggs (the shells of which contain lime, which can make your soil more alkaline).

I haven't been able to grow lettuce for the past two years, and you'll notice on my chart that lettuce tends to prefer less acidic soil. My strawberry plants, on the other hand, are thriving (they apparently appreciate my morning cups of java ;)

This adds an interesting element to garden bed planning and composting. I could create two compost piles (one for coffee grinds and one without) but that complicates crop rotation (i.e. potatoes). Instead, I think the easiest thing to do at this point is to not compost all of my coffee grinds...

Oh and look where Geraniums are on the scale - they really don't like coffee!! On an impulse one day (before learning about PH) I dumped some cold coffee over the soil of a couple of geranium cuttings I have on my counter. Now they're not so happy. Oops...

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