Ambrosia (verb) means “to try, but fail to grow roses.” If you ambrosia, you can pretty much guarantee that none of the upper-class gardening magazines will be sending any photographers along to snap pictures for their upcoming issues. You should consider that to be a good thing. Who the hell needs them nosing around your garden?
A lot of people have trouble with the verb ambrosia because the conjugation of the appropriate tense, gender, person and number forms of the verb do not follow the normal rules for verb conjugation. Then again, a lot of people think that conjugate means “to have a conjugal visit,” so screw them.