I've made a notecard for each of plants... I have a quite a stack of cards now!
Here's an example of my Roma notecard:
Tomato-Roma Bush V (for Veggie)
Seeded inside: 4/15 - 40 (plants)
Spacing: 2' (Mel says 9 square feet)
Harvest: 85-90 days... Late July
My notecards will help me when I do my planting... and help me to know approximately when to harvest.
Then I needed help to determine how many squares I was going to need... so I grabbed my notecards and started entering everything into a spreadsheet. Wow... I'm going to need 35 4x4 beds!
This is by far the most ambitious gardening plan I have EVER EVER attempted! What fun!
View my plan here: How many squares do I need?