Best windowsill direction for cuttings?

Trying lupin basal cuttings for the first time. I’ve read they need a good amount of sun to make energy, but not direct sun. I have a choice between:
1. NNE facing windowsill that only gets direct sun until 10am-ish.
2. SSW facing windowsill which gets partial sun most of day. The sun is so low this time of year it has to fight through the half dead laylandii trees at the end of the garden.
I’ve not had much success with wallflower cutting on either windowsill. Hoping for better this time!
1. NNE facing windowsill that only gets direct sun until 10am-ish.
2. SSW facing windowsill which gets partial sun most of day. The sun is so low this time of year it has to fight through the half dead laylandii trees at the end of the garden.
I’ve not had much success with wallflower cutting on either windowsill. Hoping for better this time!
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If the other one is shaded enough, it might be ok, but you'd have to be vigilant. Even at this time of year, a bit of sun can raise temps enormously, and cuttings can fry.
I live in west central Scotland - not where that photo is...
Have moved them to south facing window. There is a radiator but it’s rarely in these days given the energy price rise.