Chamomile in Zone 10B — Desert Southwest

Chamomile is a fantastic addition to any Desert Southwest garden. Its delicate, apple-like flavor makes a soothing tea, and its cheerful blooms attract beneficial insects. Plus, you'll get the satisfaction of growing your own medicine right in your backyard, perfectly timed to avoid the worst of our extreme heat.

Desert gardening presents unique challenges, but with careful timing, you can enjoy a bountiful harvest. Our long, 349-day growing season gives you plenty of opportunity to grow chamomile, especially if you take advantage of our mild winters.

Starting chamomile indoors gives you a head start, especially if you want an earlier spring harvest. Start seeds indoors from mid November through early December, about six weeks before you plan to transplant. Use seed trays with a good seed-starting mix, and provide warmth and bright light.

Bottom watering is ideal for seedlings to prevent damping off. While direct sowing works well in our climate, starting indoors can give you more control over those delicate initial stages, especially with our very-early spring character.

Transplant your chamomile seedlings outdoors from early to late January. Before transplanting, harden them off by gradually exposing them to outdoor conditions for about a week. This helps them adjust to the desert sun and temperature fluctuations.

Space your plants 6-8 inches apart in well-draining soil. Even in January, watch out for unexpected temperature swings that can stress young transplants. Protect them with row covers if needed.

Direct sowing chamomile is a simple and effective method in the Desert Southwest. Sow seeds from early January through mid October, taking advantage of our two growing seasons. Prepare the soil by loosening it and removing any large clumps.

Chamomile seeds need light to germinate, so just press them gently into the soil surface. Keep the soil consistently moist until seedlings emerge. Thin seedlings to 6-8 inches apart once they are established.

Chamomile is drought-tolerant and thrives on minimal watering, making it perfect for water-wise desert gardening. Overwatering leads to weak, leggy growth, so it’s crucial to strike the right balance. During the cooler months of our long fall and mild winter, you may only need to water every 10-14 days, depending on rainfall.

In spring and fall, check the soil moisture using the "finger test" – stick your finger about 2 inches deep into the soil. If it feels dry, it's time to water. Give your chamomile about ½ inch of water per week, focusing on the base of the plant to avoid wetting the foliage. During monsoon season, be extra cautious about overwatering, as the humidity spikes.

Yellowing leaves indicate overwatering, while wilting signals underwatering. Apply a thin layer of organic mulch around your plants to conserve moisture and regulate soil temperature, but avoid piling it against the stems.

You can expect your first chamomile harvest from early March through early January, 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 are just beginning to bend slightly backward.

Gently pluck the flowers from the stems, being careful not to damage the plant. Regular harvesting encourages continued production. As the first frost approaches in late December, harvest any remaining flowers to dry for tea, ensuring you get the most from your plants before winter.

Here are some common problems you might encounter growing chamomile in the Desert Southwest:

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 and leaves. Stunted growth and yellowing leaves. Sticky honeydew.
• What causes it: Sap-sucking insects that thrive in warm, dry conditions. They often hide in crevices.
• How to fix/prevent it: Dab individual mealybugs with a cotton swab dipped in rubbing alcohol. Strong water spray can dislodge them. Introduce beneficial insects like lacewings. Horticultural oil smothers them.

Thrips

• What it looks like: Tiny, slender insects that cause silvery streaks and distorted growth on leaves and flowers. Black fecal spots may be visible.
• What causes it: These pests are drawn to flowers and can quickly multiply in dry, hot weather.
• How to fix/prevent it: Strong water spray can help control populations. Insecticidal soap or neem oil can be effective. Blue sticky traps attract thrips.

Desert Southwest Specific Challenges: The extreme heat and arid humidity of the Desert Southwest can stress chamomile plants, making them more susceptible to pests. Consistent watering (but not overwatering) and providing afternoon shade can help keep your plants healthy and resilient. Be especially vigilant during monsoon season, as the combination of heat and humidity can create ideal conditions for fungal diseases if the plants are too wet.

Chamomile benefits from companion planting in the Desert Southwest. Plant it near onions to deter pests and improve their growth. Cabbage and broccoli also thrive near chamomile, as it helps repel cabbage moths.

Cucumbers benefit from chamomile's presence, as it attracts pollinators. Green beans also make good companions, as chamomile can improve their flavor. Avoid planting chamomile near mint, as mint can be invasive and compete for resources, which isn't ideal in our resource-limited desert gardens.