In my children’s garden, my children and I grow vegetables in addition to flowers. For the last two years, we used the same raised bed construction that I used in the side garden:
http://heirloomgardener.blogspot.com/2007/11/creating-space-for-garden.html
These were short raised beds constructed with six inch wide ipe wood. You can see a picture of one of these beds below from last summer with heirloom lemon cucumbers:

The rabbit fencing around the cucumbers was to keep the resident groundhog from eating the cucumbers in the same way he did the tomatoes.
Towards the end of the summer, we visited New York Botanical Garden’s Home Gardening Center (http://www.nybg.org/hgc_online/hgc_onsite/) and were inspired by their raised beds that were significantly taller than the ones we had constructed. Thus, once we had harvested the last of our cucumbers and zucchinis, my husband deconstructed the old beds and built the new ones you see below:

Ipe was too difficult to work with and costly, so we made these out of cedar wood. We purchased standard six by one inch, un-treated ten foot planks and had them cut in half. Each box (two of three are pictured) is made of three planks on three sides and four planks on the fourth side because our entire property is on a slope. Two additional boards are placed on top on either side to create a place where you can sit, place tools, or when the vegetables have grown, stand.
We filled the bottom of the boxes with compostable garden waste. On top, we added a mix of composted cow manure, Bumper Crop and top soil. Then, to protect the soil, we sowed a cover crop of winter rye that I purchased from Johnny’s Seeds (http://www.johnnyseeds.com/). The winter rye will be turned over in the spring adding even more organic material to the soil.
The overall result was a neater looking garden that will hopefully produce an even more robust crop next year.
*****
For a follow-post on organically preparing the soil for planting, click here:
http://heirloomgardener.blogspot.com/2008/03/raised-vegetable-beds-organically.html