Can You Plant Tomatoes in September in Southern California?

Tomatoes are a popular garden crop in Southern California due to its warm climate and long growing season. But can you plant tomatoes in September and still expect a good harvest? The answer is yes, but there are a few factors to consider.

Choosing the Right Variety

The first thing to consider is the variety of tomato you want to grow. Some varieties, such as determinate tomatoes, have a shorter growing season and may not be suitable for planting in September. Indeterminate tomatoes, on the other hand, continue to grow and produce fruit until the first frost, making them a good choice for a late-season harvest.

Providing the Right Growing Conditions

Tomatoes need plenty of sunlight, warm temperatures, and well-draining soil to grow well. In Southern California, the climate is generally warm enough to provide the right growing conditions for tomatoes even in September. However, it's important to make sure your plants are getting enough water, especially during hot spells, and to provide some shade during the hottest part of the day to prevent sunscald on the fruit.

Starting Tomatoes from Seed vs. Transplants

If you're starting tomatoes from seed in September, you'll need to factor in the time it takes for them to germinate and grow to a size suitable for transplanting. Depending on the variety and growing conditions, this can take four to six weeks or longer. Alternatively, you can purchase tomato transplants from a local garden center or nursery, which will save you time and give your plants a head start.

Best Tomato Varieties for a Late-Season Harvest

If you're planning on planting tomatoes in September in Southern California, here are some of the best varieties to consider:

Brandywine - an heirloom variety with large, flavorful fruit

Roma - a determinate variety with a good yield of meaty tomatoes

Cherokee Purple - an heirloom variety with a rich, smoky flavor

San Marzano - an indeterminate variety with a long harvest period and ideal for tomato sauce

In Conclusion

Planting tomatoes in September in Southern California can be a rewarding experience, but it's important to choose the right variety, provide the right growing conditions, and start with healthy, sturdy plants. With a little planning and care, you can enjoy a bountiful tomato harvest well into the fall.