Growing Spinach in Summer: Techniques and Tips

Spinach is a versatile and nutritious leafy green that thrives in cool weather. While it is best known for its performance during the early spring, it can actually be grown successfully during the summer with the right techniques and plants. This article will guide you through the process of growing spinach in the heat, including planting, care, and variety selection.

Understanding Spinach's Growth Preferences

Spinach is a cool-weather crop that prefers temperatures between 60-75°F (15-24°C). However, with proper care, it can be grown in the summer, especially in climates with moderate temperatures and plenty of shade. The key to successful summer spinach cultivation lies in the selection of appropriate varieties and the implementation of heat-tolerant practices.

Choosing the Right Spinach Varieties

There are several heat-tolerant spinach varieties that are more likely to thrive in the summer. These include:

Bloomsdale: A slow-bolt variety that can be harvested over a long period. Matador: Another slow-bolt variety that can withstand higher temperatures. Lavewa Indian Summer: A good choice for areas with high summer temperatures. Avon: Known for its heat tolerance and flavor. Cold Resistant Savoy: Suitable for fall planting but can also handle summer heat. Tyee: Another variety that can withstand the heat.

Planting and Growing Techniques

Here are the steps to successfully grow spinach in summer:

Planting Location: Choose a location that receives some shade, especially during the midday sun. North-facing sides of buildings or shaded areas can be ideal. Soil Preparation: Use well-draining, fertile soil, such as potting soil, mixed with organic matter. Spinach prefers pH levels between 6.0 and 7.0. Planting Seeds: Sow seeds about half an inch deep, with about two inches between each seed. Plant in small rows or a single wide row, depending on your space availability. Watering: Keep the soil consistently moist but not soggy, especially during the first few weeks after planting. Water gently to avoid disturbing the seeds. Thinning: When the seedlings reach about four inches tall, thin them to six inches apart. This helps the plants grow stronger and more productive. Fertilization: Apply a high-nitrogen fertilizer, such as fish emulsion, lightly and regularly through the growing season, following the instructions on the label. Shading and Mulching: Providing some form of shading, either through a structure or shade cloth (70-80% shade), can help reduce heat stress on the plants. Pest Management: Watch for common pests like aphids and caterpillars, and treat them promptly if needed.

Harvesting and Management

Spinach reaches its salad-cutting size in about six to eight weeks. At this stage, the plant can be harvested by either harvesting the whole plant or picking individual leaves. This method allows for continuous harvesting, extending the growing season compared to other vegetables.

Additional Tips for Succeeding in Hot Climates

Even with the right varieties and techniques, growing spinach in very hot climates can be challenging. Here are some additional tips:

Locate Your Garden Wisely: Utilize the shade provided by buildings, walls, or other structures to create a cooler microclimate. Use Shade Cloths: Cover your plants with shade cloths to reduce direct sunlight exposure, especially in the midday heat. Watering Practices: Water deeply but less frequently to encourage deep root growth and to reduce wilting. Mulching: Apply a layer of organic mulch to retain soil moisture and temperature stability.

Further Reading and Resources

For more detailed information and expert advice, consider checking out the following resources:

The Spruce: Spinach Growing GetBusyGardening: Growing Spinach Gardening Know How: Growing Spinach Seed

By following these guidelines and using the right spinach varieties, it is possible to enjoy a fresh, leafy summer harvest of spinach. Happy gardening!