When to Plant Tomatoes in Willamette Valley 2018

Are you ready to start your tomato garden but unsure of when to plant in the Willamette Valley? The answer depends on a few factors, including the last frost date, the type of tomato plant, and the desired harvest time. Let's take a closer look.

Last Frost Date

The last frost date in the Willamette Valley typically falls between late April and mid-May. It's important to wait until after the last frost to plant your tomato seeds or transplants, as frost can kill young plants. Keep an eye on the weather forecast and be prepared to cover your plants with blankets or plastic if a late frost is expected.

Tomato Plant Types

There are two types of tomato plants: determinate and indeterminate. Determinate varieties grow to a specific size and produce all of their fruit at once. Indeterminate varieties continue to grow and produce fruit throughout the growing season. The type of tomato plant you choose will affect when you should plant.

Determinate varieties, such as Roma and Celebrity, should be planted after the last frost date but before mid-July. This will ensure that they have enough time to mature and produce fruit before the first fall frost. Indeterminate varieties, such as Beefsteak and Cherry tomatoes, should be planted after the last frost date and can be planted later in the season, as they continue to produce fruit until the fall.

Desired Harvest Time

The desired harvest time will also affect when to plant your tomatoes. If you want to have ripe tomatoes by July 4th, for example, you'll need to plant early and choose a fast-maturing variety. But if you're willing to wait until later in the season, you can choose a later-maturing variety and plant later in the spring or early summer.

Another option is to use a staggered planting method, where you plant a few tomatoes early and a few later in the season. This will give you a longer harvest period and a greater chance of success.

In Conclusion

The best time to plant tomatoes in the Willamette Valley depends on the last frost date, the type of tomato plant, and the desired harvest time. Make sure to wait until after the last frost to plant, choose the right type of tomato plant, and consider using a staggered planting method for a longer harvest period. Good luck with your tomato garden!