Re: Red stems, green leaves, fast grower
I'm not sure which Red you have , may be a Dwarf Red. ... But from the looks of your plant there is a nutrient decedent. ... Appears may be calcium { light yellow & curling upper leaf edges) & sulfur (chlorosis of the lower green leave). ... A complete macro & micro element application may be in order. What type and how much fertilizer are you using?
Because of those two elements, I would check the soil Ph first. I suspect it may be alkaline and the Ph needs to be lowered.
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