Chamomile in Zone 5B — Midwest

Chamomile is a fantastic addition to any Midwest garden, offering delicate apple-like flavor perfect for teas and a calming presence in the landscape. Our fertile soil helps it thrive, and the summer heat allows for a long harvest period, providing plenty of chamomile flowers for drying and enjoying throughout our cold winters.

The Midwest weather can be unpredictable, with temperature swings in the spring and the occasional summer heat spell. However, with a bit of planning and attention to timing, you can easily grow chamomile successfully within our 168-day growing season.

Starting chamomile indoors isn't always necessary here in the Midwest, but it can give you a head start, especially if you're aiming for an earlier harvest. Begin your seeds indoors from late February through mid March, roughly six weeks before you plan to transplant them outside.

Use seed trays filled with a good seed-starting mix and keep them in a warm location, ideally around 70°F. Bottom watering is a great way to prevent damping off; just set the tray in a shallow dish of water until the soil surface is moist. Since spring can be moderate-to-late in the Midwest, starting indoors ensures your chamomile is ready to go as soon as the weather cooperates.

Transplant your chamomile seedlings outdoors from mid April through early May, once the risk of hard 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 fluctuating temperatures and stronger sunlight.

Space your chamomile plants 6-8 inches apart in a sunny location with well-drained soil. Keep an eye on the weather forecast around transplant time; those unexpected late frosts can still happen in the Midwest, so be ready to cover your seedlings if needed.

Direct sowing chamomile is a simple and effective method for Midwest gardeners, and honestly, it's my preferred way. Sow your seeds directly into the garden from mid April through late July. This gives you flexibility and avoids the fuss of starting indoors.

Prepare the soil by loosening it and removing any weeds. Chamomile seeds are tiny, so just lightly press them into the soil surface and keep them consistently moist until they germinate. Thin the seedlings to 6-8 inches apart once they're a few inches tall.

Chamomile is relatively drought-tolerant, making it a great choice for Midwest gardens where we can sometimes get periods of dry weather, even with our wet summers. While it prefers well-drained soil, it's important to get the watering right to prevent issues. Overwatering can lead to leggy, weak growth, which we definitely want to avoid.

In the spring, when rainfall is more frequent, you may not need to water your chamomile at all unless we're experiencing an unusually dry spell. During the summer heat spells, check the soil moisture by sticking your finger about 2 inches deep. If it feels dry, give your plants a good watering, aiming for about 1 inch of water per week, especially during flowering.

Water at the base of the plants rather than overhead to minimize humidity around the foliage. This helps prevent fungal diseases, which can be a concern with our moderate-to-humid Midwest summers. Signs of underwatering include wilting leaves, while overwatering can cause yellowing leaves and root rot. A layer of mulch around your chamomile plants can help retain moisture and suppress weeds, just be sure to leave space around the stems to prevent rot.

You can expect your first chamomile harvest in the Midwest from early June through mid October, about 60 days after planting. The key is to watch the flowers closely; they're ready to harvest when the petals begin to bend slightly backward.

Harvest the flowers in the morning after the dew has dried for the best flavor and essential oil content. Gently snip the flower heads off with scissors or your fingers, being careful not to damage the plant. This encourages continued production throughout the season.

Chamomile is a continuous harvest crop, so keep picking the flowers regularly to keep the plant producing. As the first frost approaches in early October, harvest any remaining flowers, even if they're not fully open, as they'll still have some flavor. Dry the flowers thoroughly for use in teas and other herbal preparations.

Here are the top 3 common problems you might encounter with chamomile in your Midwest garden:

Aphids *What it looks like:* Clusters of tiny soft-bodied insects (green, black, or white) on stems and leaf undersides. Sticky honeydew residue. Curled or distorted new growth. *What causes it:* Rapid-reproducing sap-sucking insects. Populations explode in warm weather. Ant colonies may farm them for honeydew. *How to fix/prevent it:* Strong water spray knocks them off. Encourage ladybugs and lacewings (natural predators). Insecticidal soap for heavy infestations. Neem oil works systemically. Avoid excess nitrogen fertilizer (it attracts them).

Mealybugs *What it looks like:* Small, white, cottony masses on stems, leaves, and especially in leaf axils. Plants look unhealthy and stunted. *What causes it:* Sap-sucking insects that thrive in warm, humid conditions. They are often brought in by ants or on new plants. *How to fix/prevent it:* Wipe off mealybugs with a cotton swab dipped in rubbing alcohol. Insecticidal soap or neem oil can be effective. Control ant populations to prevent them from spreading mealybugs.

Thrips *What it looks like:* Tiny, slender insects (often black or yellowish) that cause silvery or mottled damage on leaves and flowers. You might see black fecal spots. Distorted or stunted growth. *What causes it:* These pests suck plant juices, causing damage. They are more prevalent during hot, dry weather. *How to fix/prevent it:* Encourage beneficial insects like lacewings and predatory mites. Insecticidal soap or neem oil can help control infestations. Keep the area around your plants free of weeds and debris.

Midwest Specific Challenges: The moderate-to-hot heat and moderate-to-humid humidity of a Midwest summer can create ideal conditions for aphids, mealybugs, and thrips to thrive. Regular monitoring and prompt action are key to preventing these pests from becoming a major problem in your chamomile patch. Our wet-summer rainfall can also increase humidity, making good air circulation essential.

Chamomile is a wonderful companion plant in the Midwest garden, offering benefits to several other crops. Planting chamomile near onions helps repel onion flies, protecting your onion crop from damage. Cabbage and broccoli also benefit from chamomile's presence, as it can deter cabbage moths and other pests that target these brassicas.

Cucumbers thrive alongside chamomile, as the flowers attract pollinators that improve fruit set. Green beans also enjoy the company of chamomile, as it can deter bean beetles. Avoid planting chamomile near mint, as they compete for resources and can inhibit each other's growth.