Q: Photos Printing

I am trying to print a few photos on one page. Photos print is fine and works as expected. However, it automatically chooses, in this case, the landscape orientation to make the layout of the 4 photos that I am trying to print. Again, that is fine. My problem is that my printer (Canon Pixima iX6520) doesn't see the landscape and prints in portrait. What that does, in effect, is print half of the page, cutting off the photos.

Is there a way to, either force the printer to landscape as there is no option in the print dialog, or force iphoto to portrait so that I can print properly.

Thanks in advance