When Can I Plant Tomatoes Outside in Seattle?

Tomatoes are one of the most popular vegetables to grow in a home garden, and for good reason. They are versatile, delicious, and easy to grow. However, before you can start enjoying your fresh, home-grown tomatoes, you need to know when to plant them outside. In Seattle, this can be a bit tricky, as the climate can be unpredictable.

Understanding the Climate in Seattle

Seattle is known for its mild, temperate climate. However, it also experiences a fair amount of rain and cloudy days. In general, the growing season in Seattle runs from May to October. However, there can be significant variation from year to year, so you need to pay attention to the weather patterns in your area.

When to Start Seeds

The first step in growing tomatoes in Seattle is to start your seeds indoors. This should be done 6-8 weeks before the last expected frost date in your area. In Seattle, the last expected frost date is typically around mid-April. This means that you should start your seeds in late February or early March.

When to Transplant Seedlings

Once your tomato seedlings have emerged and have grown their first set of true leaves, it is time to transplant them into larger containers. This should be done about 4-6 weeks after starting the seeds. You can then transplant the seedlings into your garden once they have grown to be about 6-8 inches tall and have established roots. In Seattle, this is typically around mid-May.

Protecting Your Tomatoes from the Weather

Even after you have planted your tomatoes outside, you still need to protect them from the elements. Seattle can experience cold snaps and heavy rain, both of which can damage your plants. To protect your plants from the cold, you can cover them with a cloth or plastic sheeting. To protect them from heavy rain, you can build a temporary shelter over them, or use a raised bed with good drainage.

In Conclusion

Growing tomatoes in Seattle can be a fun and rewarding experience, but it requires careful attention to the weather and timing. By starting your seeds indoors, transplanting at the right time, and protecting your plants from the weather, you can enjoy a bountiful harvest of delicious, home-grown tomatoes.