About SowingDates

SowingDates answers one question gardeners ask every year: when is it safe to plant? We take thirty years of NOAA temperature records for the station nearest you and turn them into dates you can put on a calendar.

We publish city pages a few at a time, after checking that each one is backed by a nearby station. How we do it is on the methodology page.

SowingDates is operated by Innova Solutions LLC. The site is free to use and supported by advertising. Corrections and suggestions are welcome at hello@sowingdates.com.

Photographs

The photos on this site are real garden photographs from Unsplash, used under the Unsplash License. Credit is not required, but we give it gladly:

• Tomato seedlings sprouting in the cells of a peat seed-starting tray by Markus Spiske
• A kitchen garden in summer, with rows of young vegetables in dark soil and taller plants behind by Ries Bosch
• Hands pressing soil around a young transplant in a garden bed by Elly M
• Garden leaves edged with white frost on a cold morning by Pawel Andrzejczak
• A wooden harvest crate full of heirloom tomatoes, peppers, onions, okra and herbs on straw by Zoe Richardson
• Rows of old-fashioned paper seed packets for beets, beans, spinach, corn and squash by Fabian Kleiser
• Tomato plants heavy with red and ripening fruit, sprawling over dark garden soil by Katerina Shkribey
• Green and ripening red peppers on the plant by Anna Evans
• Yellow summer squash growing under broad leaves in a garden bed by Alexander Benesch
• Carrot tops growing in a row, with the orange shoulders of the roots showing at the soil line by Marine Le Gac
• Heads of butterhead lettuce growing in a wooden raised bed by Kiara Martin