This is a great time of year to move trilliums around on your property.
I find that I can move them very successfully while they are blooming.
Having them in bloom also helps for placement. This year I moved a group that had been somewhat hidden, out into a more open spot, but one that still makes them appear to be growing naturally in a woodland setting.
I love the combination of a grouping of while trilliums with a grouping of the red trilliums or wake-robins close by.