But there is a lot of growth. Which makes me wonder why people say to not compost citrus peels.
That was my reaction too! I read the headline and immediately thought "oh god they killed it didn't they". I was shocked to find out it was a resounding success, at least in comparison to the alternative of doing nothing.
It's probably got something to do with local soil ecology or rainfall amounts, so there may still be some merit to not composting your orange peels, but this definitely makes me want to learn more about why this guidance is so heavily repeated.