Nice plants I have an Epi Fantasy Valley 'Wakakusa' it would have been in bloom if I didn't knock the top off of itv
I grow mine with as much light as possible. In a southern window (sliding glass door) over winter then outside full am sun. I also have Onc. Tsiku Marguerite. It is currently growing 6 spikes. I also have it in a southern facing window same as my epi. It's further back it also goes outside over summer months and morning sun only. Goodluck with your plants!
Cheryl