At the end of the Christmas season last year I bought a package of 21 bottle brush trees.
Over the weekend I bleached the trees using a mixture of one gallon of hot water and a 1/4 cup of bleach. I then soaked the trees for about 20 minutes. One tree took a bit longer.
I've seen bleached trees that are then decorated with glass balls and glitter snow. I preferred to leave mine plain.
I wasn't sure if I would try the bleaching the trees. In fact ,Amie had to talk me into the bleaching.
I really like how they look. Although, I would not bleach any of the old bottle brush trees that I have.