“Or, you can stick your finger in the soil about an inch deep.
Other than simply paying attention to the forecast, Awot-Traut says there are some basic ways to know when it’s warm enough to plant. “If you’re sitting on the ground in your garden and you’re cold, it’s too cold for plants,” she says. “Or, you can stick your finger in the soil about an inch deep. If you can comfortably leave it there for a minute, it’s warm enough to plant.”