Where can you get the vegetable garden cart like on Big Brother 11?

I love how the garden on BB11 is portable and big. Does anyone know where you can get one or directions on how to build one?

Hi okorder

the guide from Ideas 4 Landscaping. This 1 stop database of above 7000 large resolution images and strategies was developed by Helen Whitfield , a landscaping extraordinaire , educator , with over twenty many years encounter designing AWARD-WINNING landscapes and getting featured in numerous magazines and publications , she envisions this collection as a design and style package suitable for novices