When to Plant Mustard in Massachusetts

Growing Mustard in Massachusetts: Complete Guide

Mustard (Brassica juncea) is a crop that grows best when sown directly in the garden. Depending on your zone, the right time to direct sow in Massachusetts falls between February 27, 2027 (Zone 7a) and March 9, 2027 (Zone 6a), once soil temperatures are consistently warm enough for germination.

Because Massachusetts stretches across 3 USDA hardiness zones (6a, 6b, 7a), planting windows can shift by as much as two to four weeks from one end of the state to the other. Gardeners in the warmer southern zones can start earlier, while those in cooler northern zones should wait until the zone table above shows their last frost has passed.

With 56 days to maturity, Mustard fits comfortably within Massachusetts's growing season in most zones. In the warmest parts of the state, a second planting later in the season may be possible.

Mustard requires full sun and regular moisture. In the Northeast, cool summers and moderate humidity can slow warm-season crops, so choose a sheltered, south-facing spot to maximise heat.

For the most precise planting dates tailored to your exact location, enter your ZIP code on our planting calendar or use the zone table above to find the schedule for your area of Massachusetts.