Q.Datura blooms
Why do the blooms on my purple detura turn brown before they are fully open?

Certified GKH Gardening Expert
There a a few reasons this could be happening. The first and most common reason is that there is a lack of watering. You can try increasing water to the plant to help it support the blossoms after they open.
The next is that there might be thrips on the plant. This article will help you with that:
https://www.gardeningknowhow.com/plant-problems/pests/insects/controlling-thrips.htm