Seeds I planted about 20 years ago were from Texas so I'm presuming they are 'Shoal Creek'. The lovely bluish purple spires are 8" to 12" & it's lived thru many Winters here in zone 9.
Events
May 18, 2019: Bloomed (1st blooms of 2019. Finished blooming by July 1st.) March 15, 2020: Plant emerged (Sprouted for 2020) August 10, 2020: Transplanted (Found a 6" plant in the west sidewalk bed so it has to be the purple. I've never found 1 before from all the seeds that drop. Put in water & will plant tomorrow in a pot on patio.) February 24, 2021: Maintenance performed (Trimmed about 3' all over while dormant but sprouting soon.) March 15, 2021: Plant emerged (1st tip sprouts of 2021) May 15, 2021: Bloomed (Just starting to show purple) April 15, 2022: Miscellaneous Event (Large one has leafed out & small one I'm keeping is 12" with 3 low branches growing in a pot on patio.) May 15, 2022: Bloomed
