Vegetable growing cheat sheet (US zones 3-9): cool season vegetables
These time frames are approximations for conventional outdoor growing, and you will need to modify your planting and harvesting schedule according to weather conditions. In most cases, cool season leafy vegetables need to be harvested before the weather turns hot, or they will quickly go to seed and/or become bitter-tasting. Take a look at the estimated growing times in chapter 9 of Go Green without Going Broke for more information about growing these vegetables.
Sow seeds/transplant: Z= Zone (normal); harvest: Z= Zone (bold); ideal soil pH levels for optimal growth