Chives in Zone 8B — Southern California

Chives are a fantastic addition to any Southern California garden. Their mild onion flavor elevates everything from scrambled eggs to tacos, and you can snip them fresh year-round thanks to our long growing season. Plus, the cheerful purple flowers attract pollinators to your garden.

Even with our semi-arid climate and occasional water restrictions, growing chives is achievable. Our mild winters and extended warm season (almost 300 days!) give you plenty of time to establish a healthy patch. You can direct sow in mid-January and harvest until mid-December.

Starting chives indoors makes sense if you want a head start, especially if you're impatient for that first harvest. Begin in late November through late December, about eight weeks before you plan to transplant. Use seed trays with a good seed-starting mix and keep them consistently moist by watering from the bottom.

Place the trays in a warm spot with plenty of light, either from a sunny window or a grow light. Since our springs tend to arrive early, this indoor start gives you bigger plants ready to go as soon as the weather's right.

Transplant your chives outdoors in early February through early March. Before planting, harden them off by gradually exposing them to outdoor conditions for about a week. This helps them adjust to the sunshine and temperature swings.

Space the seedlings 8-12 inches apart in a sunny spot with well-draining soil. Honestly, though, buying established chive plants or dividing existing clumps is way faster and gives you a harvest sooner.

Direct sowing chives is definitely possible here in Southern California, and it's an easy way to get started. Sow seeds directly into the garden from mid January through early September. Chives need soil temperatures above 50°F to germinate well.

Prepare the soil by loosening it and mixing in some compost. Sow seeds about ¼ inch deep and space them 8-12 inches apart. Just be aware that chives are slow to establish from seed, so patience is key. Dividing established clumps is a faster route to a thriving patch.

Chives appreciate consistent moisture, but they definitely don’t like soggy feet. In Southern California's climate, with our winter-wet and summer-dry patterns, you’ll need to adjust your watering schedule accordingly. During the rainy season, from late fall through early spring, you might not need to water at all.

Once the weather warms up, especially during our hot summer months, water deeply about once or twice a week, providing about 1 inch of water each time. Stick your finger about 2 inches deep into the soil – if it feels dry, it's time to water. Water at the base of the plants to avoid wetting the foliage, as this can encourage fungal diseases.

Keep an eye out for drooping leaves, which can indicate both under- and overwatering. Yellowing leaves can also be a sign of too much moisture. A layer of mulch, like shredded bark, can help retain soil moisture during the dry season and regulate soil temperature, which is helpful with our summer heat inland.

You can expect your first chive harvest in early April through mid-December here in Southern California, depending on when you planted. Look for leaves that are at least 6 inches tall before you start snipping. Cut the leaves about 1-2 inches above the base of the plant.

This encourages new growth and keeps your chives producing all season long. Harvest regularly to prevent the plants from flowering, as flowering can reduce leaf production. As winter approaches, continue to harvest as needed, but don't cut back too severely, as the plants will slow their growth during the cooler months. Every three years, divide the clumps to rejuvenate them.

Even in our Mediterranean climate, chives can face a few challenges. Here are some common issues to watch out for:

Onion Fly *What it looks like:* Wilting or yellowing leaves, stunted growth, and small white maggots near the base of the plant. *What causes it:* Onion flies lay their eggs near the base of onion family plants, and the larvae burrow into the bulbs to feed. It's worse in spring. *How to fix/prevent it:* Use row covers to prevent the flies from laying eggs. Remove any infested plants and surrounding soil. Introduce beneficial nematodes to the soil.

Rust *What it looks like:* Rusty orange, yellow, or brown pustules on leaves and stems, mostly on undersides. Leaves yellow and drop prematurely. *What causes it:* Various rust fungi that spread via wind-borne spores. Favored by warm, humid conditions with moisture on leaves. It's more common in the cooler months when the air is damp. *How to fix/prevent it:* Remove affected leaves. Avoid overhead watering. Improve air circulation by spacing plants properly. Apply sulfur or copper fungicide if needed. Don't work among wet plants. Rotate crops.

Bulb Rot *What it looks like:* Yellowing and wilting leaves, mushy bulbs, and a foul odor. *What causes it:* Overwatering and poorly draining soil create conditions favorable for fungal and bacterial pathogens. This is especially problematic in our winter-wet season. *How to fix/prevent it:* Ensure your soil is well-draining. Water only when the top inch of soil is dry. Avoid overwatering, especially during the winter. Remove and destroy any affected plants.

Southern California Specific Challenges: Our hot, dry summers can stress chives if they don't receive enough water, making them more susceptible to pests and diseases. Also, Santa Ana winds can quickly dry out the soil, so be extra vigilant about watering during these periods.

Companion planting can help your chives thrive in our Southern California gardens. Carrots benefit from chives because they deter carrot root flies. Tomatoes also love chives, as they repel aphids and other pests that target tomatoes.

Roses benefit from chives because they deter aphids and black spot. Grapes can benefit from chives as they deter pests like Japanese beetles. Avoid planting chives near beans and peas, as they can inhibit their growth.