Chamomile in Zone 3B — Midwest

Chamomile is a worthwhile addition to any Midwest garden. Its delicate, apple-like flavor makes for a soothing tea, and the plant itself attracts beneficial insects to your garden. Plus, there's a real satisfaction in harvesting your own homegrown herbs, especially in our short growing season.

Our Midwest weather can be unpredictable, with late frosts in spring and the occasional summer heat spells. But don't worry, with a little planning, you can easily fit chamomile into our 118-day growing season.

Starting chamomile indoors can give you a head start, especially if you're aiming for an early harvest. Start your seeds indoors from mid-March through early April, about six weeks before you plan to transplant them. Use seed trays filled with a good seed-starting mix, and keep them in a warm spot with plenty of light.

Bottom watering is your friend here – it prevents damping off and encourages strong root growth. Given our moderate-to-late spring, starting indoors helps ensure you get the most out of the growing season.

Transplant your chamomile seedlings outdoors from early May through early June, after the danger of frost has passed. Before planting, harden them off by gradually exposing them to outdoor conditions for about a week. This helps them adjust to the sun and wind.

Space your plants about 6-8 inches apart in well-drained soil. Keep an eye on the weather forecast – late frosts can still happen in early May, so be prepared to cover your young plants if needed.

Direct sowing chamomile is also a viable option, especially if you prefer a more hands-off approach. Sow your seeds directly into the garden from early May through early July. Choose a spot with full sun to partial shade and well-drained soil.

Gently press the seeds into the soil, but don't bury them too deeply. Keep the soil consistently moist until the seedlings emerge. Direct sowing can be a bit slower than starting indoors, but it's less work and the plants often catch up quickly once the weather warms up. Space them 6-8 inches apart once they get going.

Chamomile is relatively drought-tolerant and prefers well-drained soil, which is good news given our clay soil in many parts of the Midwest. Overwatering can lead to leggy, weak growth, so it's important to find the right balance.

During the spring, when rainfall is more frequent, you may not need to water your chamomile at all, unless we're experiencing a particularly dry spell. Once the summer heat spells arrive, check the soil moisture regularly. Stick your finger about two inches deep into the soil. If it feels dry, it's time to water. Aim for about an inch of water per week, either from rainfall or irrigation.

Water at the base of the plants rather than overhead, especially with our moderate-to-humid conditions. This helps prevent fungal diseases. Signs of underwatering include wilting and dry, crispy leaves. Overwatering can cause yellowing leaves and root rot. A light layer of mulch, like straw or wood chips, can help retain moisture in the soil and suppress weeds.

You can expect your first chamomile harvest from early July through late September, about 60 days after planting. The best time to harvest is in the morning, after the dew has dried, when the flowers are at their peak. Look for flowers where the petals have just begun to bend slightly backward.

To harvest, simply snip off the flower heads with scissors or your fingers. Be gentle to avoid damaging the rest of the plant. Regular harvesting encourages continued production throughout the season.

As our first frost approaches in mid-September, harvest any remaining flowers to dry for tea. Even if a light frost nips them, you can still use them if they haven't turned completely brown.

What it looks like: Clusters of tiny green, black, or white insects on stems and leaf undersides. You might also see sticky honeydew residue and curled or distorted new growth.

What causes it: Aphids are rapid-reproducing sap-sucking insects. Their populations explode in warm weather, and they're often "farmed" by ants for their honeydew.

How to fix/prevent it: Knock them off with a strong spray of water. Encourage natural predators like ladybugs and lacewings. For heavy infestations, use insecticidal soap or neem oil. Avoid excess nitrogen fertilizer, as it attracts them.

What it looks like: Small, white, cottony masses on stems, leaves, and in leaf joints. Plants will be weakened, and leaves may turn yellow and drop.

What causes it: These sap-sucking insects thrive in warm, humid conditions and can be spread by ants.

How to fix/prevent it: Wipe them off with a cotton swab dipped in rubbing alcohol. For larger infestations, use insecticidal soap or neem oil. Control ant populations, as they protect mealybugs.

What it looks like: Tiny, slender insects that are difficult to see. Look for silvery streaks on leaves, distorted flowers, and black specks (their droppings).

What causes it: Thrips are attracted to light-colored flowers and thrive in hot, dry conditions.

How to fix/prevent it: Spray plants with a strong stream of water. Use insecticidal soap or neem oil. Encourage natural predators like lacewings and minute pirate bugs.

Midwest Specific Challenges: Our moderate-to-hot summers and moderate-to-humid conditions can create a favorable environment for aphids, mealybugs, and thrips. Consistent monitoring and prompt action are key to keeping your chamomile healthy. The wet-summer rainfall also means you should be extra careful to avoid overhead watering when treating infestations, as it can spread the problem.

Chamomile is a great companion plant for several vegetables in the Midwest garden. It benefits onions by improving their flavor and growth. Cabbage and broccoli also benefit, as chamomile attracts beneficial insects that prey on cabbage worms and other pests.

Cucumber and green beans thrive near chamomile because it attracts pollinators and helps deter common pests. Avoid planting chamomile near fennel, as it can inhibit its growth.