I took a terrific spreadsheet that Johnny Select Seeds put together and offered up on their home page and added a little bit more to it.
I added a few more vegetables that they missed, a couple of usage notes on the first page and a harvest date tab to offer some guidance as to when things should be coming out of the garden and into your kitchen. Obviously using a model like this to predict the harvest is a little bit like trying to predict the weather – if you get close, you did all right.
The file is Excel and isn’t exactly the most dynamic approach – you have to update things on each page… ideally, I’ll get back to this and have a single page for the vegetables and then have the data dynamically sorted based on inputs on the first page… then again – Johnny Seeds saved me a lot of time with this jump start… and, uhh ohh… my leeks aren’t started yet! 
Take it or leave it – it’s a slightly polished for my own usage tool (so I can plan crop timings for the CSA) – I think gives a little more information than the original. Maybe… but I’m biased!
Here it is – Planting / Seed Starting / Harvest Target Workbook
Hello: Just a note to thank you for making your seed-starting plan available. I’m a fairly new vegetable gardener and I appreciate having this plan. Thank you.
No problem – I really hope it helps (and sorry it’s so ugly) – I really need to give credit to Johnny Select Seeds… really – I just stood on their shoulders!
Tomatoes are always present as garden vegetables because they are easy to grow.-:`
I might argue that point just a little after the blight issue that hit just about everyone last year and the fact that so many people plant tomatoes but don’t get decent yields off of them.
my favorite garden vegetable is the tomato plant and also the asparagus **