Viewing post #1005970 by sooby

Seedfork said:
I am still trying to absorb a lot of this information, the difference in the type of nitrogen needed for annuals and perennials makes me wonder if it is actually a good idea to mix the two?

I haven't looked at the videos but I assume they mean the difference between ammonium and nitrate plant preferences? I don't know that one can necessarily generalize that much although there are species differences. This article explains the difficulty in determining such preferences:
http://aob.oxfordjournals.org/...

Both ammonium and nitrate occur naturally in the soil, ammonium eventually being converted to nitrate by microorganisms anyway.