Eggshells in water as fertilizer
When I was about 20 (1980s) I went to a house and saw the biggest most vigorous African violet I've ever seen live, covered in bloom. I asked the owner what she fed it, and she indicated a jar, filled with eggshells soaking in water. Is this legit? Do any of you use it or have experience with it? I have been using a fertilizer I found out has too much urea in it, and need to switch over to something without.