I've recently switched from organic to water soluble chemical ferilizer because the organic fertilizer was building up layers on my soil which I didn't like.
I have 3 different kinds for spring, summer and autum. The autum one I'm using is 9+9+36+3+trace elements but when do I stop using it? I think I've read somewhere that plants stop absorbing fertilizer when its below 15 degrees. So should I stop when temperatures go below that, which would be in roughly 2 weeks or is there a different way to tell. For example when the leaves have fallen off the tree.