When to Plant Tomatoes in Oregon 2020

Tomatoes are a staple in most gardens and can be grown successfully in Oregon. However, choosing the right time to plant tomatoes is essential for a bountiful harvest. In this article, we will discuss when to plant tomatoes in Oregon in 2020.

Climate and Soil

Oregon has a varied climate due to the state's varied terrain. The western part of the state has a mild, maritime climate influenced by the Pacific Ocean, while the eastern part of the state is arid with hot summers and cold winters. In general, Oregon’s climate is ideal for growing tomatoes, which require warm temperatures and full sun.

When planting tomatoes, it is important to choose a location with well-draining soil that is rich in organic matter. Tomatoes prefer slightly acidic soil with a pH between 6.0 and 6.8. If your soil is too alkaline, add sulfur to lower the pH level.

When to Plant Tomatoes

The best time to plant tomatoes in Oregon is during the warm months of spring, after the last frost date. The last frost date varies for each region of Oregon. In general, the last frost date for the western part of the state is around April 15th, whereas the last frost date for the eastern part of the state is as late as June 1st.

It is crucial to wait until after the last frost date to plant tomatoes to avoid any damage from late-season frosts. Planting tomatoes too early can also result in stunted growth, especially if the soil is too cold. In addition, cool soil can also delay the flowering and fruiting of the tomato plants.

Choosing the Right Tomato Varieties

When choosing tomato varieties to plant in Oregon, it is important to consider the length of the growing season. Oregon's growing season varies depending on the region, with the western part of the state having a longer growing season than the eastern part.

For the western part of Oregon, choose indeterminate tomatoes that require long growing seasons and hot temperatures to ripen. Determinate tomatoes are better suited for the shorter growing season of eastern Oregon.

Popular tomato varieties for Oregon include Early Girl, Celebrity, Oregon Spring, and Brandywine. These varieties are well-suited for Oregon's climate and can be found at local nurseries or through online seed catalogs.

Caring for Tomato Plants

Once you have planted your tomatoes, it is essential to care for them properly to ensure a bountiful harvest. Regular watering is crucial for tomato plants, and they require at least one inch of water per week.

Tomatoes also benefit from fertilization, especially with a balanced fertilizer high in phosphorus and potassium. Apply fertilizer every two weeks during the growing season, being careful not to over-fertilize.

Lastly, prune your tomato plants to remove any suckers, which are small branches that grow between the main stem and the leaf branches. This helps the plant direct its energy towards fruit production and results in larger, healthier tomatoes.

Conclusion

Tomatoes are a versatile and rewarding crop to grow in Oregon. By selecting the right time to plant tomatoes, choosing the right variety for your region, and caring for your plants properly, you can enjoy a bountiful harvest of sweet, juicy tomatoes that are perfect for use in a variety of dishes.