I bought a bag of "Premium Organic Potting Soil" at Costco and transplanted my healthy tomato seedlings into it. They are growing poorly now, rather stunted and leaves are not a healthy green. Has anyone else used it and had problems?
I don't use it, but unless it's a VERY unusual situation like a bad batch of soil or something, it's probably human error of some sort. At least that's the case with me. 99 % of the time if I have a problem it's usually something I am doing wrong. A picture is worth 1000 words. maybe you could post one.