Do your vegetables suffer from calcium deficiency?

I've just returned from some vacation days together with my family. While we were out travelling we saw several beautiful and interesting gardens. And as you can imagine, I always get inspired when I get the chance to visit other beautiful gardens. However, I also saw some gardens that certainly didn't seem to thrive very well. Now, I know that there can be many reasons why the plants in a garden don't thrive, but I just read about one cause that many gardeners aren't aware of - calcium deficien

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