More sun and heat, more water, more leaves, more and better fertilizer applications and still on the same schedule?? It will be interesting to see if they bloom at the same time next year. Do you have a photo of one of your S. giganteum to share? Here's hoping you'll have loads of bloom next year for your work.
LariAnn said:As far as what made them so precocious in leaf production, it may be my robust fertilization regime involving both incorporated 18-6-8 Nutricote and regular applications of dilute Miracle Gro solution.
I may try to replicate your regime with one next year to see the difference up here.
As a general question will you lift your tubers to inspect them? Do you think they'll do better if undisturbed?