Feverfew in Zone 6A — Southeast

Feverfew is a wonderful addition to any Zone 6A Southeast garden. Its cheerful, daisy-like flowers bring a touch of whimsy, and it's known for its medicinal properties, especially for relieving headaches. Plus, it attracts beneficial insects, making it a valuable companion plant in your vegetable garden.

Our hot and humid summers here in the Southeast can present some challenges, but don't let that deter you. Feverfew is surprisingly resilient, and with a little attention to soil and watering, you can enjoy its blooms throughout our long, 198-day growing season.

Starting Feverfew indoors isn't strictly necessary here in the Southeast, but it can give you a head start, especially if you're aiming for earlier blooms. Start your seeds indoors from late January through mid February, about eight weeks before you plan to transplant them outside. Use seed trays with a good seed-starting mix and keep them warm and consistently moist – bottom watering is a great way to prevent damping off.

A sunny windowsill or grow lights will provide the light they need. Keep in mind our springs are moderate, so starting indoors allows you to have more mature plants ready to go once the weather stabilizes.

Transplanting Feverfew seedlings outdoors can be done from early April through early May, once the risk of 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 sun and wind.

When transplanting, space the plants 12-15 inches apart to allow for good air circulation, which is crucial in our humid climate. Keep an eye on the weather forecast – a late cold snap can still occur.

Direct sowing Feverfew is a straightforward option, especially if you prefer a more natural approach. Sow seeds directly into well-prepared soil from early April through early August. The soil should be loose and well-draining.

Gently press the seeds into the soil surface – they need light to germinate. Keep the soil consistently moist until seedlings emerge. Thin the seedlings to 12-15 inches apart once they are a few inches tall. Direct sowing is convenient, but you might have to wait a bit longer for the first blooms compared to starting indoors.

Feverfew is relatively drought-tolerant once established, which is a blessing during our hot Southeast summers. However, consistent watering is important, especially during the first few weeks after planting. Aim for about 1 inch of water per week, either from rainfall or irrigation.

Use the "finger test" to determine when to water – stick your finger about 2 inches into the soil. If it feels dry, it's time to water. Water at the base of the plants to avoid wetting the foliage, which can encourage fungal diseases in our humid environment.

During periods of heavy rainfall, ensure the soil drains well to prevent root rot. Yellowing leaves can indicate overwatering, while wilting leaves signal underwatering. A layer of mulch can help retain moisture and suppress weeds, but avoid piling it against the stems to prevent rot.

Pruning Feverfew is essential for maintaining its appearance and encouraging continuous blooming. Deadhead spent flowers regularly throughout the growing season to prevent the plant from putting energy into seed production. Simply snip off the faded flower heads just below the next set of leaves.

After the main flowering period, typically in late summer or early fall, you can cut the plant back by about one-third to rejuvenate it. Since our first frost usually arrives around late October, you might want to leave some seed heads intact if you want the plant to self-seed for the following year.

You can expect your first Feverfew harvest starting in mid June and continuing through early November. The best time to harvest is when the small, daisy-like flowers are in full bloom. These flowers are often used in traditional herbal remedies.

To harvest, simply snip off the flower heads with a pair of scissors or pruning shears. Regular harvesting encourages the plant to produce more flowers. As the first frost approaches in late October, you can harvest any remaining flowers to dry for later use.

Here are some common problems you might encounter with Feverfew in the Southeast:

Self-seeds Prolifically

• What it looks like: Seedlings popping up everywhere in your garden, even in areas where you didn't plant them.
• What causes it: Feverfew readily self-seeds, and the seeds can spread easily in our climate, especially with our wet-summer rainfall.
• How to fix/prevent it: Deadhead spent flowers regularly to prevent seed formation. If you want to allow some self-seeding, designate a specific area for Feverfew to grow. Remove unwanted seedlings as they appear.

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).

Leaf Miners

• What it looks like: Winding, white or yellow tunnels inside the leaves.
• What causes it: The larvae of small flies burrow into the leaves and feed on the tissue.
• How to fix/prevent it: Remove and destroy infested leaves. Encourage natural predators like parasitic wasps. Use row covers to prevent adult flies from laying eggs on the plants.

Southeast Specific Challenges: Our hot, humid summers and wet-summer rainfall in the Southeast can increase the risk of fungal diseases on Feverfew. Ensure good air circulation by spacing plants adequately and avoid overhead watering. Keep an eye out for pests like aphids, which thrive in warm, humid conditions.

Feverfew makes a great companion plant for several reasons. Planting it near tomatoes can help repel pests like aphids and whiteflies, which are common problems in the Southeast vegetable garden. It also attracts beneficial insects that can help pollinate your tomatoes.

Roses also benefit from having Feverfew nearby, as it can deter aphids and other pests that commonly attack roses. Many herbs, like rosemary and thyme, are also good companions for Feverfew. Avoid planting Feverfew near members of the cabbage family, as it can attract cabbage white butterflies, whose caterpillars can damage these crops.