actually i don't think it's the soil itself i think it's those cedar (???) chips. i had a garden goin outside that i was growing tomatoes, jalapenos, etc. in and figured i'd put a covering of those in to keep moisture in since i live in an area that gets fuckin hot during the summer and little rain. the plants all started to look like that so i'd get rid of those...also check the ph of it like someone mentioned above.