What type of wood, and how is it put together?

My plain pine beds are so far fine (some of them are on their fourth year), but my first thought is to try whacking the raised corners with a mallet or hammer. :P

Last year I bought a couple of composite beds on clearance at Sam's Club, they were $30 on sale and are 42" x 84" x 8. Normal price is $40 which is still a bargain for composite. They are attractive and go together easily without tools. (The boards just slide into the corner connectors).

As my wood beds rot, I will gradually replace them with composite. To the best of my knowledge and research, it's safe to grow in, and it's very attractive and should last for life.

Jo