Update: As I really wanted to try this plant this year, I ended up buying primed seed of Verbena rigida 'Santos'. I put seed into a soda bottle, covered with the top, as I usually do for winter sowing but placed it under grow lights inside. The seed have already germinated so I guess for this plant, that is one choice in order to be certain of germination. No action, yet, in the winter sowed jug outside, with the non primed seed but it is still early.
Sowed the primed seed on Feb 15.... Feb 22 showing a few seed germinating
and by Feb 27, all seed have germinated.
Myles
