Chamomile in Zone 7B — Northern California

Chamomile is a fantastic addition to any Northern California garden. Its delicate, apple-like flavor makes for soothing teas, and the plant itself is incredibly versatile. Plus, there's nothing quite like the satisfaction of brewing a cup of tea with herbs you've grown yourself, especially given our long growing season and mild winters.

While we NorCal gardeners face challenges like drought and water restrictions, Chamomile's adaptability makes it a manageable and rewarding crop. With our extended 245-day growing season, you'll have plenty of time to enjoy its benefits.

Starting Chamomile indoors isn't essential in our climate, but it can give you a head start. If you're eager to get things going, aim to sow seeds indoors from mid-January through early February, about six weeks before you plan to transplant.

Use seed trays filled with a good seed-starting mix, and provide warmth and light – a sunny windowsill or grow lights work well. Bottom watering is key to prevent damping off; simply place the tray in a shallow dish of water and let the soil absorb moisture from the bottom. With our early spring, this head start can mean an even earlier harvest.

Transplant your Chamomile seedlings outdoors from early to late March, once the soil has warmed up a bit. Before planting, harden them off by gradually exposing them to outdoor conditions for about a week.

Space the seedlings 6-8 inches apart in a sunny spot with well-drained soil. Keep an eye on the weather forecast; even though we have a mild climate, late frosts can still occur during this time.

Direct sowing Chamomile is a simple and effective method, especially in our forgiving Northern California climate. You can sow seeds directly into the garden from early March through early September.

Prepare the soil by loosening it and removing any weeds. Chamomile prefers slightly cooler soil temperatures, so sowing in early spring or late summer can be ideal. Sow seeds thinly and space them about 6-8 inches apart.

Chamomile is wonderfully drought-tolerant, making it perfect for water-wise gardening in Northern California. However, even drought-tolerant plants need some attention, especially during our dry summers.

During the cooler spring and fall months, you'll likely only need to water occasionally, perhaps once every week or two if there's no rain. As temperatures rise in the summer (reaching those typical highs around 88°F), increase watering to once a week, or more often if the soil dries out quickly. Use the "finger test": stick your finger about two inches into the soil; if it feels dry, it's time to water. Aim for about an inch of water per week, delivered at the base of the plant to avoid wetting the foliage and encouraging fungal diseases in our low-humidity environment.

Overwatering is a common mistake that can lead to leggy, weak growth. Signs of overwatering include yellowing leaves and a generally droopy appearance. Underwatering, on the other hand, will cause the leaves to wilt and the plant to look stressed. A good layer of mulch around your Chamomile plants will help retain moisture in the soil, reducing the need for frequent watering.

You can expect your first Chamomile harvest from late April through late November, about 60 days after planting. The best time to harvest is in the morning, after the dew has dried but before the sun gets too hot.

Look for flowers where the petals have just begun to bend slightly backward – this indicates peak flavor and potency. Gently pluck the flowers from the stems, being careful not to damage the plant. Regular harvesting encourages continued production, so don't be shy about picking those blooms!

As first frost approaches around mid- November, harvest any remaining flowers to dry for tea. Even if the plant experiences some frost damage, it will likely bounce back in the spring, giving you another season of fragrant blooms.

Chamomile is generally a low-maintenance plant, but it can occasionally encounter problems with pests. Here are three common issues to watch out for in Northern California:

Aphids *What it looks like:* Clusters of tiny soft-bodied insects (green, black, or white) on stems and leaf undersides. You might also notice a sticky honeydew residue or curled, distorted new growth. *What causes it:* Rapid-reproducing sap-sucking insects. Populations explode in warm weather, and ant colonies may farm them for honeydew. *How to fix/prevent it:* A strong water spray can knock them off. Encourage ladybugs and lacewings (natural predators). Insecticidal soap can be used for heavy infestations. Neem oil works systemically. Avoid excess nitrogen fertilizer, as it attracts them.

Mealybugs *What it looks like:* Small, white, cottony masses on stems, leaves, and in the crevices of the plant. They suck sap, causing stunted growth and yellowing leaves. *What causes it:* These pests thrive in warm, dry conditions, which can be common during our NorCal summers. They are often spread by ants. *How to fix/prevent it:* Wipe them off with a cotton swab dipped in rubbing alcohol. Insecticidal soap or neem oil can also be effective. Control ant populations to prevent them from spreading the mealybugs.

Thrips *What it looks like:* Tiny, slender insects that are difficult to see with the naked eye. They cause silvery streaks or mottled spots on leaves and flowers. Severely infested leaves may become distorted or drop off. *What causes it:* Thrips are attracted to light-colored flowers and foliage. They are most active during warm, dry weather, making them a common problem in our Mediterranean climate. *How to fix/prevent it:* Encourage natural predators like lacewings and predatory mites. Insecticidal soap or neem oil can be used, but be sure to apply it thoroughly, as thrips can hide in tight spaces.

Northern California Specific Challenges Our moderate-to-hot summers, low humidity, and dry-summer rainfall can stress Chamomile, making it more susceptible to pests. Consistent monitoring, proper watering practices, and encouraging beneficial insects are key to keeping your plants healthy and productive.

Chamomile is a wonderful companion plant in the Northern California garden, attracting beneficial insects and improving the health of nearby plants. It particularly benefits members of the onion and cabbage families.

Good companions include onions (Chamomile is said to improve their flavor), cabbage and broccoli (Chamomile attracts beneficial insects that prey on cabbage moths), cucumbers (Chamomile may help deter cucumber beetles), and green beans (Chamomile improves growth and flavor). Avoid planting Chamomile near mint, as they compete for resources and can inhibit each other's growth.