Q.datura not reblooming true
Why is my datura not reblooming true to when I purchased it? I purchased this plant in May of this year. It was full of large frilly lavender and white blooms. I kept it outside after all danger of frost had passed. It was outside all summer. It is now in my sunroom and is reblooming; however, the blooms are now single petaled and more white than lavender. How can I get the blooms back to looking like they were when I first purchased it?
Your plant is likely a hybrid and it has possibly reverted back to one varieties it is crossed with.
https://www.gardeningknowhow.com/ornamental/flowers/datura/growing-datura-trumpet-flower.htm