We get so many questions from gardeners about the best times for planting different vegetable seeds. The truth is that there is no perfect answer, as the best planting times depend on your soil temperature, microclimate, whether or not you’re using plastic cover or mulch, and when you hope to harvest your produce (to name a few variables). For example, while we advise seeding tomatoes in mid-march or early april, you can plant much earlier if you have a heated greenhouse into which they’ll be transplanted. Also, it’s often best to plant single harvest crops like radishes, head lettuce or carrots several times per growing season, or in many ‘successions.’ Succession planting requires a bit or extra planning, but can result in a prolonged harvest period for you favorite crops. For example we plant beets every three weeks from March through July and arugula every week from March through mid-Sept. During our first several years of growing in the Puget Sound, we consulted the Maritime Northwest Garden Guide for wisdom on the best first and last planting dates for our region. Now, after many years of trial and error, we’ve put together our own Pacific NW Planting Calendar with a more comprehensive crop list and dates that are more specific to the Puget sound. This simple tool will help you identify the window for starting vegetable seeds in your own Northwest garden. Months with an asterisk (*) indicate that it’s best to start seeds indoors during this time for later transplanting outdoors. Click here to download your planting calendar!