Chives in Zone 4A — Northeast

Chives are a must-have in any Zone 4A Northeast garden. Their mild onion flavor elevates everything from summer salads to baked potatoes, and they're so easy to grow. Plus, the cheerful purple blossoms attract pollinators, adding beauty and function to your small garden space.

Our short growing season and occasional late frosts can be a challenge, but chives are surprisingly resilient. With a little planning and attention to timing, you can enjoy fresh chives from early summer right up until our first frosts arrive in mid-September. Even with only 128 days, you can make the most of it.

Starting chives indoors in late February through mid March gives you a head start, but it's honestly not always necessary. If you're impatient or want a really early harvest, go for it. Otherwise, direct sowing often works just fine.

If you do start indoors, sow seeds in seed trays filled with a good seed-starting mix. Keep them warm and consistently moist – bottom watering is a great way to avoid disturbing the tiny seeds. Once the seedlings emerge, provide plenty of light. Remember, spring can be late in the Northeast, so don't rush to transplant them outside before the weather settles.

Transplant your chive seedlings outdoors in early to late May, once the danger of frost has passed. Before transplanting, harden them off by gradually exposing them to outdoor conditions for about a week. This helps them adjust to the cooler temperatures and stronger sunlight.

Plant them 8-12 inches apart in well-drained soil. Keep an eye on the forecast – we can still get surprise frosts in early May around here. Honestly, though, buying established starts or dividing an existing clump is a much faster way to get a good harvest.

Direct sowing chives is a simple option, especially if you're not in a hurry. Sow seeds mid April through mid June, after the soil has warmed up a bit. Prepare the soil by loosening it and removing any rocks. Those rocks are a New England staple, aren't they?

Sow seeds 8-12 inches apart and cover lightly with soil. Keep the soil consistently moist until the seedlings emerge. Be patient – chives can be slow to establish from seed. Divisions or starts will always give you a quicker return.

Chives need moderate, consistent watering, especially during our peak summer growing months. Unlike some herbs that prefer to dry out between waterings, chives appreciate regular moisture. They're actually more tolerant of moisture than most herbs.

During the summer, aim for about 1 inch of water per week, either from rainfall or irrigation. 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, which can encourage fungal diseases in our moderately humid climate.

Signs of underwatering include wilting or yellowing leaves. Overwatering can lead to bulb rot, so make sure your soil drains well. A light layer of mulch, like straw or shredded leaves, can help retain moisture and keep the soil temperature consistent, which is helpful with our cool nights.

You can expect your first chive harvest from early July through late September, depending on when you planted. The leaves are ready to harvest when they're at least 6 inches tall. Just snip them off about 1-2 inches above the base of the plant.

Harvesting regularly encourages new growth, so don't be shy! The more you cut, the more they'll produce. Plus, snipping off the flower heads will encourage more leaf growth.

As our first frosts approach in mid-September, give your chives a final trim. You can freeze the chopped chives for use throughout the winter. Every 3 years, divide the clumps to keep them vigorous and productive.

Here are a few common problems you might encounter with chives in Zone 4A:

Onion Fly

• What it looks like: Wilting or yellowing leaves, stunted growth, and small white maggots at the base of the plant.
• What causes it: Onion flies lay their eggs near the base of the plant, and the larvae feed on the bulbs and roots.
• How to fix/prevent it: Use row covers to prevent flies from laying eggs. Remove and destroy any infested plants. Rotate your crops each year.

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.
• How to fix/prevent it: Remove affected leaves. Avoid overhead watering. Improve air circulation. Apply sulfur or copper fungicide. Don't work among wet plants. Rotate crops.

Bulb Rot in Wet Soil

• What it looks like: Soft, mushy bulbs and yellowing, wilting leaves.
• What causes it: Overwatering or poorly draining soil, which allows fungal pathogens to thrive.
• How to fix/prevent it: Ensure your soil drains well. Avoid overwatering. Plant chives in raised beds if your soil is heavy clay.

Northeast Specific Challenges: Our moderate heat, moderate-to-humid humidity, and even rainfall can create favorable conditions for fungal diseases like rust and bulb rot. Good air circulation and well-drained soil are key to preventing these problems.

Chives are great companions for many plants in your Northeast garden:

• Carrots: Chives repel carrot rust flies, protecting your carrot crop.
• Tomatoes: Chives are said to improve the flavor of tomatoes and deter pests.
• Roses: Chives can help prevent black spot and other fungal diseases on roses.
• Grapes: Chives deter aphids that can damage grapevines.

Avoid planting chives near:

• Beans: Chives can inhibit the growth of beans.
• Peas: Chives can also negatively affect the growth of peas.