Welcome to March! Our spring is shaping up to be a bit too premature and a bit too warm and a bit too dry for our liking; we’d like to see quite a lot more moisture. This time last year, we still had at least four inches of snowpack on the ground; this year, zilch. Also last year, we were adorable, eager, optimistic, first-year farmers, and we started our seeds way too early. This year, we’re hardened, grizzled veterans, so we know better. And next year? Watch out.
If you’re going to grow anything outside, the single most important piece of information you need is your average first and last frost date. This statistic is pretty much exactly what it sounds like; weather stations all over the country send data to the USDA, which in turn calculates average first and last frost dates. These dates are essential because most (but not all) annual food crops will not tolerate freezing temperatures.
Here at Quiet Farm, our average last frost is May 13, and our average first frost is October 4 for a 143-day growing season; this means we’re almost assured not to have frost between these dates. Keep in mind, however, that this is an average, not a guarantee – you’re safer assuming that frost is possible one to two weeks on either side of these dates. (The location of weather stations varies widely and can sometimes be inaccurate, so check where your closest weather station is located to ensure you’re getting the best information. Plus, the climate emergency is totally destroying the consistency and reliability of these dates. It’s all pretty much guesswork from here on out.)