I just bought a wonderful illustrated calendar from a local woman here in Seattle that fits the bill! It does focus on North West "wild" foods, but it's absolutely wonderful. She has them for sale on her Etsy, here: http://www.etsy.com/view_listing.php?listing_id=33308712

Hmm never thought about it but now I want one too!

What about the Vegetannual Print? I love this one... I want to cross-stitch it for the wall in our living room... enjoy!
http://ny-image0.etsy.com/ialcr_fullxfull.34888.jpg

I know this isn't what you're looking for specifically, but I love my local fruit/veggie harvest calendar. It's more utilitarian than pretty, but really helped me when I started out focussing on local foods. It is specific to foods produced in the Ottawa, Ontario, Canada region.

http://www.spcottawa.on.ca/ofsc/en/buylocal/harvest.html

What about an electronic calendar? I know it's not as pretty, but I think it would be pretty handy to be in the market and pull up a "what's in season" calendar on my iPhone/Blackberry.

Something like an iCal or Google Calendar showing all the various produce times that are in season for each month would be wonderful.

funny, a while ago I was looking for something similar and decided to make my own. Unfortunately it never really got beyond the initial sketches part. Maybe one of these days I'll finish it.

I know this isn't really what the questioner was asking about, but this website is an amazing resource to know what crops are in season when.
http://www.pickyourown.org/US_crop_harvest_calendars.php

Ooooh! This sounds like such a good idea, I think that I could turn this into a great project - just by photographing our vegi box every week next year, by 2011 our local calendar will be good to go!!!

I found these on etsy...it's illustrations rather than photography, but really pretty!

http://www.etsy.com/view_listing.php?listing_id=33477905
http://www.etsy.com/view_listing.php?listing_id=32971030

A couple of different ideas. You can either look up what's in season for your region online and then cull pictures from the internet then build your own calendar. I know there are businesses that can print you a calendar based on pictures you provide.

Another option is to start going to your farmers market and taking pictures of what they've got. Maybe you could buy an assortment of fruits and veggies and make your own still-life. You could include a lot of a particular fruit when it is in full season and less when it's season is just beginning or about to end. Take these pictures and have them converted into a calendar. Maybe do the first option for next year and the second option for 2011.

And if you live in Northern California, you can start here:

http://www.cuesa.org/seasonality/charts/fruit.php

I'm sure it'll look great!

I own the print you have pictured! I love it so much--it makes me happy every time I see it. I get lots of compliments, too! You can get it on etsy

Last year my local paper included a chart very similar to the one chzplz posted above, but specific to western Washington state. I've had it clipped out ever since, I like to refer to it as each season ends and the next one begins to plan out my menus for coming months.

http://www.themarketsllc.com/Portals/0/growing-seasons-chart.gif

Beautiful photos, supports a great organization!

http://www.seedsavers.org/Details.aspx?itemNo=M3372

This organization supports sustainable farming and prints a beautiful seasonal calendar. Not only are the monthly photos in time with the season, but there are tips and farming/gardening comments printed within the monthly pages.

http://www.thelandconnection.org/get_involved/calendar.cfm

Hi! It's the original Christine who wrote in the question. Thank you all so much - so many great ideas I can't even choose!! I am so excited. Thank you thank you thank you!

Christine

I like heartmignardise's idea.

I think the issue is that whats "in season" varies so much by region that unless you're lucky enough to find someone on etsy that's doing something that aligns with your area, you're going to be better off doing your own.

There's nothing more frustrating than flipping through a gardening magazine or book and seeing "hardy to USDA zone 7" when you're in Canadian zone 4. :)

I wanted to post this beautiful tea towel that a friend of mine brought back from the UK - it's Britain specific, but would work for anywhere with a similar climate - http://www.todryfor.com/towel.asp?id=138. So quaint!