Urea vs. Urea free

[cabbo]

Hi, I've been trying to research the whole urea controversy. I know most people here on the OB say urea in fertilizer is bad, and while thats good enough for me I'd like to know why. I cant seem to find a simple explanation. So I guess I'm asking why do I need a urea free fertilizer?

[BikerDoc5968]

Most plants are grown in some sort of a "potting" mix which is "soil-based". These mixes have naturally occuring bacteria that break down the urea nitrogen to a nitrogen form that can be taken up by the roots and used by the plant. Since most orchids are grown in a very course material, the bacterial population isn't there and the urea isn't broken down.

[cabbo]

Thanks Doc, that wasn't so hard.

[BikerDoc5968]

Any time....that's what we are all about. Keep in mind, there will be others who don't believe this to be the case. That there is enough nitrogen in the urea-based fertilizers to provide for the plant's growth.... I believe in what I've read.

[Ethan]

Wow, I didn't know it was so simple - Thanks, Doc!