Feverfew in Zone 5B — Midwest

Feverfew is a fantastic addition to any Midwest garden. It’s not only a beautiful, daisy-like flower, but it's also known for its herbal properties. Plus, it attracts beneficial insects that help keep your tomatoes and other veggies thriving during our productive summer growing season.

Our Midwest weather can be unpredictable, with variable springs and summer heat spells. But, timing your planting right means you can easily enjoy Feverfew. With our 168-day growing season, you'll have plenty of time to harvest and enjoy its benefits.

Starting Feverfew indoors in the Midwest is an option, especially if you want a head start. Starting seeds indoors from mid-February through early March gives you about 8 weeks to get them established before transplanting. This can be helpful if you're eager to see blooms as early as possible.

Use seed trays with a good seed-starting mix. Keep them warm and provide plenty of light—a grow light works wonders, especially with our moderate-to-late springs. Don’t forget to water from the bottom to prevent damping off.

Transplanting Feverfew outdoors in the Midwest should happen from mid-April through mid-May. Before you move them outside permanently, be sure to harden them off. Give them about a week of gradually increasing outdoor exposure.

When you transplant, space them about 12-15 inches apart. Keep an eye on the weather forecast; a late frost can still happen, even in late April. If a freeze is predicted, cover your seedlings to protect them.

Direct sowing Feverfew in the Midwest is an easy alternative to starting indoors. Sow seeds directly into your garden beds from late April through mid-July. This method works well, especially if you're not in a rush for early blooms.

Make sure the soil is well-prepared and the soil temperature is consistently above 60°F. Scatter the seeds lightly and gently press them into the soil. Thin seedlings to 12-15 inches apart as they grow.

Feverfew is wonderfully low-maintenance when it comes to watering, which is great for Midwest gardeners with busy schedules. Once established, it's quite drought-tolerant. That said, getting them off to a good start is still important.

In the spring, when plants are young, water deeply once a week if we haven't had significant rainfall. Stick your finger about 2 inches into the soil; if it feels dry, it's time to water. During our summer heat spells, you might need to water a little more frequently, but generally, an inch of water per week is sufficient.

Water at the base of the plant rather than overhead, especially with our moderate-to-humid summers. This helps prevent fungal diseases. If the leaves start to droop, it’s a sign of underwatering. Yellowing leaves can indicate overwatering, so adjust accordingly. A good layer of mulch will help retain moisture and keep the soil cool during those hot summer months.

Pruning Feverfew is simple and helps encourage continuous blooming throughout the season in the Midwest. The key is to deadhead regularly. This means snipping off the spent flowers as soon as they start to fade.

Deadheading prevents the plant from putting energy into seed production and encourages more blooms. After the main flowering flush, usually late summer, you can cut the plant back by about half to rejuvenate it. As the first frost approaches around early October, you can leave the remaining foliage; it adds a bit of winter interest, and you can clean it up in the spring.

You can expect your first Feverfew harvest from early July through mid-October in the Midwest, about 70 days after planting. Look for the small, daisy-like flowers to be fully open and vibrant. This is when they’re at their peak for both beauty and herbal use.

To harvest, simply snip the stems just above a set of leaves. This encourages the plant to produce more flowers. Harvest in the morning after the dew has dried for the best results.

Continue harvesting throughout the summer to keep your Feverfew producing. As the first frost approaches in early October, you can harvest the remaining flowers and dry them for later use.

Here are the most common problems you might encounter growing Feverfew in the Midwest:

Self-seeds Prolifically

• What it looks like: Small Feverfew seedlings popping up everywhere in your garden and even in the lawn.
• What causes it: Feverfew is a prolific self-seeder. If you let the flowers go to seed, expect volunteers next year.
• How to fix/prevent it: Deadhead regularly to prevent seed formation. If you want to save seeds, collect them from only a few plants. Be diligent about weeding out unwanted seedlings.

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: Tan, winding trails visible on the leaves. Leaves may appear distorted or blistered.
• What causes it: Larvae of small flies that tunnel between the upper and lower leaf surfaces.
• How to fix/prevent it: Remove and destroy affected leaves. Use row covers to prevent adult flies from laying eggs on the plants. Apply neem oil to disrupt the leaf miners' life cycle.

Midwest Specific Challenges: Our moderate-to-hot summer heat, moderate-to-humid humidity, and wet-summer rainfall can create favorable conditions for aphids and leaf miners. Regularly inspect your plants and take action promptly to prevent infestations from getting out of control. Good air circulation and well-drained soil help minimize these problems.

Feverfew makes a great companion plant in the Midwest garden. Plant it near tomatoes to help repel pests. Its strong scent can deter insects that bother tomato plants.

Roses also benefit from Feverfew planted nearby. It can help deter aphids that often plague roses. Additionally, Feverfew is a good companion for many herbs. It attracts beneficial insects that help pollinate and protect herbs from pests. Avoid planting it near anything that competes for space or nutrients, as Feverfew can be a bit aggressive.