Chives in Zone 4A — Midwest

Chives are a Midwest garden staple. Their mild onion flavor brightens everything from summer salads to baked potatoes, and they're incredibly versatile in the kitchen. Plus, the cheerful purple blooms are a welcome sight in any Zone 4A garden. It's deeply satisfying to snip fresh herbs from your own yard, especially after a long winter.

Our Midwest weather can be unpredictable, with late frosts in spring and the occasional summer heat spell. But don't worry, with proper timing and a little attention, you can easily grow chives within our 128-day growing season.

Starting chives indoors gives you a head start, but it's not essential. If you're eager to harvest as early as possible, sow seeds indoors from late February through mid March, about 8 weeks before you plan to transplant them.

Use seed trays filled with a good seed-starting mix. Keep them consistently moist, and bottom watering is a great way to prevent damping off. Provide warmth and plenty of light – a sunny windowsill or grow lights will do the trick. Remember, spring in the Midwest can be moderate-to-late, so starting indoors ensures you have established plants ready to go once the weather cooperates.

Transplant your chives outdoors from early to late May, once the danger of frost has passed. Before transplanting, harden off your seedlings by gradually exposing them to outdoor conditions for about a week. This helps them adjust to the sun and wind.

Space your chives plants 8-12 inches apart in well-drained soil. Keep an eye on the weather forecast, as we can sometimes get a late frost even in May. Protect your transplants if necessary. Honestly, though, buying chive starts from a local nursery or dividing existing clumps is a much faster and easier way to get established plants.

Direct sowing chives is definitely an option, but be patient – they're slow to establish from seed. Sow seeds directly into the garden from mid April through mid June. Make sure the soil temperature is consistently above 60°F for best germination.

Prepare the soil by loosening it and removing any rocks or debris. Sow seeds about ¼ inch deep and space them 8-12 inches apart. Keep the soil consistently moist until the seedlings emerge. Just know that divisions or starts are a much faster path to a thriving chive patch.

Chives need moderate and consistent watering to thrive in our Midwest climate. They're more tolerant of moisture than some other herbs, but they're not drought-tolerant, so don't let them dry out completely.

During the spring and fall, when temperatures are cooler and rainfall is more frequent, you might only need to water once a week, or even less if we've had a good soaking. During our summer heat spells, though, you'll likely need to water every other day, or even daily if the soil dries out quickly. Stick your finger about 2 inches deep into the soil – if it feels dry, it's time to water. Aim for about 1 inch of water per week, either from rainfall or irrigation.

Water at the base of the plants to avoid wetting the foliage, especially with our moderate-to-humid summers. Wet leaves can encourage fungal diseases. Signs of underwatering include wilting or yellowing leaves, while overwatering can lead to root rot. A layer of mulch around your chives helps retain moisture and suppress weeds, which is especially helpful during our wet summers.

You can expect your first harvest of chives from early July through late September, about 80 days after planting. The leaves are ready to harvest when they are at least 6 inches tall.

To harvest, simply snip the leaves about 1-2 inches above the base of the plant. This encourages new growth and keeps the plant producing. You can harvest chives continuously throughout the growing season. Just be sure to leave enough foliage for the plant to continue growing.

As our first frost approaches in mid- September, you can either let your chives die back naturally or cut them back to the ground. They'll come back strong next spring. Every 3 years or so, divide your chive clumps to keep them vigorous and prevent overcrowding.

Here are some common problems you might encounter with chives in the Midwest:

Onion Fly

• What it looks like: Wilting, yellowing, and stunted growth. You might see small white maggots near the base of the plant or in the soil.
• What causes it: Onion flies lay their eggs near onion family plants. The maggots hatch and feed on the roots and bulbs.
• How to fix/prevent it: Use row covers to prevent flies from laying eggs. Remove and destroy any infested plants. Beneficial nematodes can help control the maggots in 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 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: Yellowing or browning leaves, mushy bulbs, and a foul odor.
• What causes it: Overwatering, poor drainage, and fungal pathogens in the soil.
• How to fix/prevent it: Ensure your chives are planted in well-draining soil. Avoid overwatering, especially during our wet summers. Improve soil drainage by adding compost or other organic matter.

Midwest Specific Challenges: Our moderate-to-hot heat and moderate-to-humid humidity during the summer can create ideal conditions for fungal diseases like rust. The wet-summer rainfall can also contribute to bulb rot if the soil doesn't drain well. Be sure to provide good air circulation and avoid overhead watering to minimize these problems.

Chives are great companion plants for several reasons. Plant them near carrots to deter carrot root flies. They also help repel aphids and other pests from tomatoes. Roses benefit from having chives nearby, as they help deter black spot and other fungal diseases. Grapes also benefit from chives, which can help deter Japanese beetles.

Avoid planting chives near beans or peas, as they can inhibit their growth.