Salvia regla has always been a problematic plant for us. Why? Because people (understandably) want to order and receive them early in the year, but the plant is very difficult to propagate and grow until days are long. That's why we have S. regla 'Royal' as a Limited Availability plant, offered June through September. Having healthy and nice sized plants before June is very difficult. So from our perspective, this is an ideal candidate for fall planting. Some plants just don't fit our schedules well.