Coleus…I Planted Three Different Rooted Cuttings In The Same Pot And They All Turned The Same Dark Burgundy After About A Month,

Question

why?

Answer 1

I suspect the burgundy one was more vigorous and the others died under it.

It's also possible the more vibrant ones lost their color due to overfertilization, temperature, etc.

https://www.gardeningknowhow.com/ornamental/foliage/coleus/growing-coleus-in-a-pot.htm