American Garden Works OST Obelisk with Spiral Twist Finial, 54" x 10.5", Matte Black

Would this work for rose bushes?

Is there a larger version? Same maker and style?

does it come assembled? does it have joins that can easily rust?

Is there a taller version? This one is 54" tall and by the time it's sunk into the dirt, quite a bit shorter.