When to Plant Tomatoes in the Pacific Northwest (PNW)

Tomatoes are a favorite crop for many gardeners in the Pacific Northwest. However, timing is important when it comes to planting tomatoes in this region. In this article, we will provide guidance to help you determine the best time to plant tomatoes in the PNW.

Climate Considerations

The PNW has a marine climate, characterized by mild temperatures and plenty of rainfall throughout the year. The average growing season for tomatoes in this region is about 100-120 days. However, the timing of the first and last frost varies depending on the location.

The coastal areas of the PNW generally have milder temperatures than the inland areas. The inland areas can experience frost as late as May, while the coastal areas typically experience frost until early April. In general, the best time to plant tomatoes in the PNW is after the danger of frost has passed.

Recommended Planting Times

For the coastal areas of the PNW, the recommended time to plant tomatoes is from late April to early May. For the inland areas, it is best to wait until late May to early June. This will ensure that the seedlings have the right temperature and moisture levels to thrive.

It is also important to consider the specific variety of tomato that you are planting. Some varieties are more cold-tolerant than others, while others require more heat to mature. For example, early-maturing varieties, such as Early Girl and Celebrity, can be planted earlier in the season than late-maturing varieties, such as Brandywine and San Marzano.

Other Tips for Successful Tomato Planting

Here are some additional tips to help ensure successful tomato planting in the PNW:

Choose a location with full sun exposure for at least 6 hours per day.

Prepare the soil with compost and other organic matter to improve drainage and fertility.

Water consistently to keep the soil moist, but not waterlogged.

Provide support for the plants with stakes, cages, or trellises, as tomatoes are prone to falling over.

Apply fertilizer throughout the growing season to promote healthy growth and fruit production.

Conclusion

Planting tomatoes in the PNW requires careful consideration of the climate and specific variety. By following our recommended planting times and additional tips, you can help ensure a successful tomato harvest in your garden.