You don't need a degree in math or a weather forecaster on speed dial. Here are some simple tips for knowing when to sow seeds.
How do you know when to start seeds? To beginning gardeners, the answers can sometimes sound pretty confusing: Sow peas early, but not beans. Start tomatoes indoors but sow radishes outside. Count backward and forward ...
True, every species has a different "time to harvest" and different temperature requirements, but if you're armed with the last frost date for your area, a calendar and your seed packets, you can figure it out.
Directions on packets give you the number of weeks the seeds need to develop before they can be safely planted outdoors. The time for planting will depend on your last frost date, then whether it's a cool-season or warm-season plant — or something in between. The packet will give you hints: