Echinacea in Zone 5B — Midwest

Echinacea, or coneflowers, are a Midwest garden staple for good reason. These beauties bring vibrant color to your garden from midsummer through fall, attracting pollinators galore. Plus, they're incredibly low-maintenance once established, making them perfect for our busy summer schedules. You can even harvest the petals for tea!

Our Midwest weather can be unpredictable, with temperature swings in spring and summer heat spells, but don't let that deter you. Echinacea are tough cookies that can handle our 168-day growing season. With a little planning, you'll have these cheerful flowers blooming in your garden in no time.

Starting Echinacea indoors gives you a head start, but it's honestly not essential. It's most useful if you're aiming for blooms the very first year or want to grow a specific variety that's hard to find as transplants. If that's you, sow seeds indoors from late February through mid March, about eight weeks before you'd transplant them outside.

Use seed trays with a good seed-starting mix. Keep the soil consistently moist, watering from the bottom to avoid damping off. Provide warmth and plenty of light – a grow light is ideal, especially with our moderate-to-late springs here in the Midwest, where sunlight can be spotty.

Transplanting Echinacea is the most common way to get these beauties into your garden, and honestly, it's the easiest. Aim to transplant your seedlings outdoors from late April through mid May, after the danger of frost has passed. Keep an eye on the forecast; we can still get some chilly nights that time of year.

Before planting, harden off your seedlings by gradually exposing them to outdoor conditions for about a week. Space them 18-24 inches apart in a sunny spot with well-drained soil. Remember, Echinacea are perennials, so choose their location wisely. Buying starts from a local nursery is an even easier way to get going, especially since the seeds need cold stratification.

Direct sowing Echinacea is definitely an option, but be patient – it can take longer for the plants to mature and bloom that first year. Sow seeds directly into the garden from late April through late June. Soil temperatures need to be consistently warm for germination, so wait until the soil has warmed up.

Prepare the soil by loosening it and removing any weeds. Sow seeds about ¼ inch deep and space them 18-24 inches apart. Keep the soil consistently moist until the seedlings emerge. Just be aware that you might not see flowers until the following year.

Echinacea are incredibly drought-tolerant once established, which is great for our Midwest summers that can bring both wet spells and heat spells. The key is to avoid overwatering, especially in our moderate-to-humid climate. Think of them as native plants that thrive in poor, dry soil; don't pamper them!

During the first few weeks after transplanting or direct sowing, water regularly to help them establish strong roots. After that, back off. A good rule of thumb is to water only when the top two inches of soil feel dry to the touch – the "finger test." Usually, an inch of water per week, including rainfall, is plenty. In periods of extended heat, you may need to water more often.

Water at the base of the plant to avoid wetting the foliage, which can encourage fungal diseases in our humid Midwest summers. Mulching around the base of the plants with shredded bark or wood chips helps retain moisture and suppress weeds. Yellowing leaves can be a sign of overwatering, while wilting leaves indicate underwatering.

Pruning Echinacea is simple. Deadheading, or removing spent flowers, encourages more blooms throughout the season. Simply snip off the flower heads just below the spent blooms. Do this from midsummer until fall to keep the flowers coming.

Alternatively, you can leave the seed heads on the plants for winter interest and to provide food for birds like goldfinches. In late winter or early spring, before new growth emerges, cut back the entire plant to the ground to make way for fresh growth.

Your first Echinacea harvest will likely be from late July through mid October, about 90 days from planting. The flowers are ready to harvest when they are fully open and the petals are vibrant. You can leave some seed heads for the goldfinches, too.

To harvest, simply cut the flower stems near the base of the plant. You can harvest the petals for tea, drying them for later use. Regularly harvesting flowers encourages the plant to produce more blooms.

As the first frost approaches in early October, you can harvest any remaining flowers before they are damaged by the cold. Don't worry, the plants will come back strong next year, ready to bloom again.

Here are three common problems you might encounter with Echinacea in the Midwest:

Aster Yellows

• What it looks like: Distorted, greenish flowers, often with tufts of growth in the flower heads. The plant may also be stunted and have yellowed leaves.
• What causes it: A disease transmitted by leafhoppers. These little guys are more prevalent during our warm summer months.
• How to fix/prevent it: Unfortunately, there's no cure for aster yellows. Remove and destroy infected plants immediately to prevent the spread of the disease. Control leafhopper populations with insecticidal soap.

Powdery Mildew

• What it looks like: White or grayish powdery coating on leaves, stems, and sometimes flower buds. Leaves curl, yellow, and die. Reduces plant vigor.
• What causes it: Various fungi that thrive in warm days, cool nights, and moderate humidity. Dry leaf surfaces actually favor it (unlike most fungi). This is common in our Midwest summers.
• How to fix/prevent it: Improve air circulation through spacing and pruning. Remove affected leaves. Neem oil or potassium bicarbonate sprays help. Milk spray (1 part milk to 9 parts water) is surprisingly effective. Plant resistant varieties.

Japanese Beetles

• What it looks like: Metallic green beetles that skeletonize leaves, leaving behind a lacy appearance. They often feed in groups and can quickly decimate a plant.
• What causes it: Japanese beetles are a common pest in the Midwest, emerging in early summer and feeding on a wide variety of plants.
• How to fix/prevent it: Handpick beetles off plants and drop them into a bucket of soapy water. Apply neem oil or insecticidal soap to deter them. You can also use Japanese beetle traps, but be aware that they may attract more beetles to your garden.

Midwest Specific Challenges: Our moderate-to-hot heat, moderate-to-humid humidity, and wet-summer rainfall can create favorable conditions for fungal diseases like powdery mildew. Monitor your plants regularly and take preventative measures to ensure they stay healthy and productive.

Echinacea play well with others in the garden. Tomatoes and peppers make great companions because they share similar sun and water requirements. Plus, the Echinacea can attract pollinators that will also benefit your tomatoes and peppers.

Many herbs, such as rosemary, thyme, and lavender, also make excellent companions for Echinacea. These herbs help deter pests and attract beneficial insects. Avoid planting Echinacea near anything that will shade them out, as they need full sun to thrive in our Midwest gardens.