In article ,
"symplastless" wrote:

Roses need a lot of hydration and food to remain healthy.

Are not roses autotrophs meaning that they manufacture their own food. Do
they not burn glucose as a food source? I think so. I think we can add
essential elements required for good growth but I do not believe we can feed
a rose glucose. I may be wrong.

No, the glucose will feed the bacteria in the rhizosphere which will in
turn feed the rose bush.
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Billy
http://angryarab.blogspot.com/