Viragrow Delivers! : Mulch and Sprays Reduce Black Fruit Rot on Tomato: Q. I planted tomatoes in late feb. in my raised boxes..The cherry tomatoes have been doing great.. producing almost more then I can handl…
I also address this on some previous posts.
http://xtremehorticulture.blogspot.com/2014/05/tomatoes-with-black-bottoms-now-being.html
http://xtremehorticulture.blogspot.com/2014/06/pepper-brown-spots-could-be-irrigation.html
http://xtremehorticulture.blogspot.com/2011/06/container-grown-tomato-black-bottoms.html