what to plant in southern california in september

Natashya

2 min read

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24-12-2024

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Southern California's September weather offers a sweet spot for planting: the intense summer heat begins to subside, and the days remain warm and sunny, perfect for establishing new plants before the cooler months. This guide details what to plant in your Southern California garden this September, catering to various sun exposures and gardening styles.

September's Southern California Gardening Advantages

September presents ideal conditions for planting in Southern California. The soil is still warm from summer, promoting faster root development. Days are still long enough for good sunlight, yet the scorching heat is less intense than July and August. This allows newly planted specimens to establish themselves without the stress of extreme temperatures. Less water is typically needed as well.

Sun-Loving September Selections

For areas receiving ample sunshine, consider these options:

Vegetables

• Lettuce & Greens: Cool-season greens like lettuce, spinach, kale, and arugula thrive in the milder September temperatures. Plant seeds directly into the ground or start seedlings indoors a few weeks prior.
• Carrots & Radishes: These root vegetables appreciate the slightly cooler weather and can be sown directly into the soil. Ensure well-drained soil for optimal growth.
• Garlic: Plant garlic cloves now for a harvest in late spring. Space cloves about 4-6 inches apart.

Flowers

• California Poppies: These vibrant wildflowers are native to the region and are drought-tolerant once established. Direct sow seeds.
• Snapdragons: These cheerful flowers come in a variety of colors and will bloom through fall and winter. Plant as seedlings.
• Calendula: These bright orange or yellow flowers are both beautiful and beneficial to the garden, attracting pollinators and repelling some pests. Easy to grow from seed.

Herbs

• Rosemary & Sage: These fragrant, drought-tolerant herbs are perfect for the Southern California climate and can be planted now as young plants or cuttings.
• Thyme: Thyme is another low-maintenance herb that thrives in warm, sunny locations.

Part-Shade September Plantings

If you have areas with partial shade, consider these options:

Vegetables

• Chard: Chard is a leafy green that tolerates some shade. It's a versatile vegetable that can be used in salads, stir-fries, and more.
• Broccoli & Cauliflower: These cool-season crops appreciate partial shade, especially during the hottest part of the day. Plant seedlings.

Flowers

• Impatiens: These vibrant flowers add a pop of color to shady spots.
• Begonias: Begonias are shade-loving plants with attractive foliage and flowers.

Other Plants

• Ferns: Several fern varieties will happily grow in shady, well-watered locations.

Preparing Your Southern California Garden for September Planting

Before planting, ensure your soil is adequately prepared. Amend heavy clay soil with compost or other organic matter to improve drainage and fertility. Test your soil pH to ensure it's appropriate for your chosen plants. Clear out any weeds and debris from your planting area.

Watering Wisely

Water deeply and less frequently to encourage deep root growth. Newly planted seedlings and plants will need more frequent watering until established. Use soaker hoses or drip irrigation to conserve water and avoid wetting foliage.

Choosing the Right Plants for Your Southern California Microclimate

Southern California's climate varies widely depending on your specific location. Consider your region's unique conditions, including average temperatures, rainfall, and soil type, when selecting plants. Consulting your local nursery for advice on the best choices for your area is always a good idea.

Maintaining Your September Garden

Regular weeding is essential to prevent competition for resources. Monitor your plants for pests and diseases and take appropriate action if necessary. Mulch around your plants to retain moisture and suppress weeds. By following these tips, you can enjoy a thriving and beautiful Southern California garden throughout the fall and winter.