Seeds can likely be winter sown in warmer climates, as they do self-sow lightly here in growing zone 5. Perhaps lightly because seeds aren't 100% winter hardy here? Seeds prefer light for germination, so surface sowing is best by gently pressing seeds into soil/mix. Seeds generally germinate when temperatures are 68-70°F or above.

The only difference I can see in the Salvia 'Marble Arch' series and Salvia 'Clary' series, is plant height. To me, the flowering bracts look the same.

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