Chamomile in Zone 8B — Northern California

Chamomile is a fantastic addition to any Northern California garden. Its delicate, apple-like flavor makes for a soothing tea, and the plant's cheerful presence brightens up the landscape. Plus, it's incredibly satisfying to grow your own calming beverage right in your backyard.

While our dry summers and occasional water restrictions can be a concern, Chamomile is surprisingly drought-tolerant, making it a great choice for water-wise gardening. With our long 269-day growing season, you'll have plenty of time to enjoy its benefits.

Starting Chamomile indoors gives you a head start, but it's not always necessary in our mild climate. If you want to get blooms as early as possible, aim to sow seeds indoors from late December through mid January, about six weeks before you plan to transplant.

Use seed trays with a well-draining seed-starting mix. Keep the soil consistently moist by bottom watering—set the tray in a shallow dish of water and let the soil absorb it from below. Provide warmth and plenty of light, especially since our spring can be a bit slow to start.

Transplant your Chamomile seedlings outdoors from mid February through mid March, once the weather has settled a bit. Before planting, harden them off by gradually exposing them to outdoor conditions for about a week.

Space the plants 6-8 inches apart in a sunny spot with well-drained soil. Keep an eye on the weather forecast—we can still get some unexpected late frosts during this period.

Direct sowing Chamomile is a simple and effective method, especially with our long growing season. You can sow seeds directly into the garden from mid February through mid September.

Prepare the soil by loosening it and removing any weeds. Chamomile prefers a soil temperature of around 60-70°F for optimal germination. Sow seeds shallowly and keep the soil consistently moist until seedlings emerge, then thin to 6-8 inches apart.

Chamomile thrives on neglect, which is perfect for our Northern California gardens. It's drought-tolerant and prefers well-drained soil, so overwatering is a bigger concern than underwatering.

During our dry summers, water deeply but infrequently, about once a week, providing about 1 inch of water. Use the finger test: stick your finger about 2 inches into the soil; if it feels dry, it's time to water. Water at the base of the plant to avoid wetting the foliage, which can encourage fungal diseases in our microclimates.

In the cooler months, you may only need to water every few weeks, or even less if we get decent rainfall. Signs of underwatering include wilting or yellowing leaves, while overwatering can lead to leggy growth and root rot. A light layer of mulch can help retain moisture and suppress weeds, but avoid anything too heavy that traps moisture.

You can expect your first Chamomile harvest from mid April through early December, 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. Gently pluck the flowers from the plant, being careful not to damage the stems or leaves. Regular harvesting encourages continued production throughout the season.

As our first frost approaches in late November, harvest any remaining flowers. You can dry them for tea by spreading them in a single layer on a screen or tray in a cool, dry place.

Here are some common issues you might encounter with Chamomile in Northern California:

Aphids

• What it looks like: Clusters of tiny green, black, or white insects on stems and leaf undersides. You might also see sticky honeydew or curled, distorted new growth.
• What causes it: Rapidly reproducing sap-sucking insects thrive in warm weather. Ants may even protect them for their honeydew.
• How to fix/prevent it: A strong spray of water can knock them off. Encourage natural predators like ladybugs and lacewings. Use insecticidal soap for heavy infestations, or neem oil for a systemic solution. Avoid over-fertilizing with nitrogen.

Mealybugs

• What it looks like: Small, white, cottony masses on stems, leaves, and especially in leaf joints. Stunted growth and yellowing leaves.
• What causes it: These sap-sucking insects thrive in warm, dry conditions, which we often experience in our late summers and early falls.
• 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. Ensure good air circulation around your plants.

Thrips

• What it looks like: Tiny, slender insects that are difficult to see with the naked eye. Look for silvery streaks on leaves, distorted flowers, and black fecal droppings.
• What causes it: Thrips are attracted to stressed plants, and populations can explode during hot, dry weather.
• How to fix/prevent it: Encourage natural predators like lacewings and predatory mites. Insecticidal soap or neem oil can be effective. Keep your garden free of weeds and debris.

Northern California Specific Challenges: Our moderate-to-hot summers, combined with low humidity and dry-summer rainfall, can stress Chamomile if it's not watered properly. Focus on deep, infrequent watering and well-draining soil to prevent fungal diseases and encourage healthy growth.

Chamomile is a great companion plant for many vegetables in Northern California. It attracts beneficial insects and can even improve the flavor of some crops.

Good companions include onions, cabbage, and broccoli. Chamomile repels cabbage moths, protecting these brassicas. It also benefits cucumbers and green beans, potentially improving their growth and yield.

Avoid planting Chamomile near mint, as they can compete for resources and chamomile may inhibit mint growth.