How to Plant, Grow, and Care for American Basketflower
An annual plant that thrives with sun and low water, the American basketflower is a treasure in prairies and meadows across the United States. Join native plant gardener Jerad Bryant and learn how to best care for this low-maintenance annual.
Contents
Annuals are bittersweet in the garden. They grow for a year and die when they’ve completed their life cycle. Most annuals sold at nurseries are not native wildflowers, and they lack the beneficial adaptations of native plants. The American basketflower is one of these natives, and it’s a delightful surprise when it readily reseeds in the garden.
There’s no need to mourn the last of the basketflower blooms each season, as the plant will sprout again and again from seeds each fall. Unlike frost-tender annuals like Coleus and Impatiens that struggle to set seed, American basketflowers are tough reproducers without the gardener’s help.
These plants are perfect for sunny spots with good drainage, and they form a gorgeous mass planting with other annual wildflowers like sunflowers and firewheels. Throughout the summer, their tall, slender stems grow large pink flowers that delight gardeners and pollinators alike.
Overview
Plant Type
Annual
Family
Asteraceae
Genus
Centaurea
Species
Centaurea americana
|
Native Area
North America
Exposure
Full sun
Height
1.5-6’
Watering Requirements
Low
|
Pests & Diseases
Aphids, powdery mildew
Maintenance
Low
Soil Type
Free-draining
Soil pH
Neutral
|
What Is American Basketflower?
An icon of eastern prairies and meadows, the American basketflower pops its pink-purple flower heads above native grasses and wildflowers. Known scientifically as Centaurea americana, this annual is closely related to bachelor’s button, purple scabiosa, and sweet sultan. These plants are in the Centaurea genus, and all grow alike, preferring similar conditions.
American basketflower is one of the few plants in the Centaurea genus native to North America. Plant it instead of its non-native relatives to provide a beneficial wildflower for North America’s native pollinators and animals. This particular native hosts hummingbirds, bumblebees, and an array of other birds and insects.
Plant this annual today and enjoy animal visitors for life! If you have an area with Full sun and well-draining soil, this plant will make the area pop with its bright flowers and deep-green foliage.
History
Various American Indian nations in the Midwest and Great Plains areas used this flower for medical ailments like venomous bites, indigestion, and eye disorders. It has a long history of growing in the United States.
Paleolithic remains show that people alive during 6000-8000 B.C. hunted bison in large numbers. They would scare the herds off cliffs and then collect the meat down below. What does this have to do with the American basketflower? On sites where this activity occurred, the native wildflower grows in large numbers.
At these hunting sites, the people camped and cooked their meat. We do not know if they planted this flower, but its presence at these sites shows that seeds may have spread with human interactions.
Native Area
This wildflower originates from Missouri, Kansas, Louisiana, Arizona, and northern Mexico. It naturalizes itself across the Southeast, Midwest, and East Coast. American basketflowers love growing wherever there is sunshine, cool winters, and water.
This plant’s seeds prefer mild temperatures to germinate, and the best time for planting them varies depending on your region. They naturally germinate over the fall and winter in their native regions and grow slowly until the warmth of spring and summer arrives. Then they mature upwards and prepare to display their unique basketflowers.
Extreme cold and heat may adversely affect seed germination outside of its native range. This native is a hardy annual though, and its drought tolerance and full sun preference make it a stellar choice for gardens from Hawaii to New York.
Characteristics
American basketflowers’ foliage looks dainty in early spring. When the warmth of summer arrives, the cute green rosettes shoot up to six feet tall! The leaves extend off the main stem, and they point onlookers up to the large, erect flowers at the tops of the stem.
The plant’s namesake is its basketflowers, and they can reach widths of four inches wide! They are purple-pink on the outside and pale yellow-white on the inside. Their shape resembles cornflowers, but much bigger.
When left to flourish on their own, these annuals drop seeds that readily germinate each year. Their seediness makes them excellent additions to meadow, prairie, and grassland-type landscapes.
Uses
The flowers make excellent cut flowers in arrangements and bouquets. They work well because they grow bright and big on a long, slender stem. The flowers also hold their shape surprisingly well and make long-lasting dried flower arrangements.
In the landscape, they are choice additions for naturalizing areas that are chock full of invasive species. After removing the invasive species, plant this seed in mass quantities with other native grasses, wildflowers, and annuals. It will quickly spread and create a meadow that protects the soil, and that prepares the area for future landscaping.
This native wildflower also looks stunning planted in a mixed flower border with other plants that prefer like conditions. Experiment by planting American basketflower seeds with your other plants this fall, and watch them attract pollinators to your space as they grow and flower.
Where To Buy American Basketflower
American basketflower seeds are available online and in North American retail seed stores. Their annual nature makes it difficult to sell them as live plants. The best way to purchase this native is by buying seeds and sowing them in fall through spring.
Planting
Easy to grow, the American basketflower requires little maintenance and setup to grow successfully. Start by sowing seeds at the optimal time in the fall. This mimics the plant’s natural growth period, as the seeds naturally ripen at the end of the summer and fall to the ground.
Start the sowing process by choosing an optimal growing site for your plants. This native grows its best in full sun with soil that drains well. Once you’ve located your site, scatter seeds across the loose soil. Then, cover them with a thin layer of soil and water well.
In areas with extreme frost, sow seeds in the spring after all dangers of frost have passed. Or, start seeds indoors a few weeks before your last frost date. After the seeds germinate, water them consistently until the plants grow a few leaves. Then, cut back on the watering, as they will need less water while they are adults. Transplant container-grown seedlings into the garden after all dangers of frost have passed.
Mature plants set seeds on their flowers for next year’s plants. Simply let the plants scatter their seed where they grow, and they’ll germinate on their own! Thin overcrowded seedlings as they grow, then watch as your plants repeat their reproductive cycle with flowers and seeds each year.
How to Grow
Grow this annual easily, as its planting, maintenance, and upkeep are simple to learn. To grow the American basketflower, plant seeds, water them, and let them mature into adult plants! Undoubtedly, a plant this easy to care for is an excellent addition to any garden.
Light
This native wildflower loves full-sun locales with more than 6 hours of direct sun daily. Adapted to meadows and prairies, American basketflower plants prefer growing areas that match these conditions. Plant your seeds in a sunny spot, and you’ll never have to worry about sun exposure for your plants.
In shady locations, this plant struggles to flower and set seed. It produces fewer flowers and may not reseed as readily as needed to spread itself throughout the area. Avoid these issues by planting seeds in full sun.
In warm desert areas with extreme heat and drought, American basketflowers benefit from living in a location with a bit of shade during the afternoon. This offers protection during the hottest parts of the day, as the shade helps them stay cool and hydrated despite the heat.
Water
A true prairie wildflower, this native requires little water during the growing season. Plants in areas with regular summer rainfall do not need extra irrigation. Aim to water them once the soil is dry, and be sure not to water your plants if the soil is already wet.
As seedlings, these plants need regular water to mature fully. Keep their soil moist as they germinate and mature in early spring. Then, once the stems start bolting and growing upward in summer, water only once the soil is dry.
American basketflower plants are drought tolerant once established and require less water as adults than in their early growth stages. A good watering routine is once every two weeks in the summer and once every week when there is extreme heat. Paying attention to your plants is the best way to know when to water, as they will drink water in varying degrees depending on your climate.
Soil
Adaptable and dependable, American basketflower plants are not picky about their soil. They prefer to grow in free-draining soil with good drainage, although they will grow in clay, silt, or sandy soil.
If your garden is full of clay, amend it with compost to help increase the soil’s water-holding capabilities. Over time, compost amends your soil to be better for your plants by adding structure, microbes, and nutrients. Whether your soil is clay, silt, or sand, it benefits from a healthy addition of compost each season.
Temperature and Humidity
American basketflower plants grow in a wide range of temperatures and humidities, although they prefer cool temperatures while they germinate and warm temperatures while they flower. Planting seeds in fall or spring gives your plants this treatment, as they’ll germinate in the cool and flower in the heat of summer.
This native flower grows in a range of humidities and does not need a specific level to grow successfully. In humid areas, the plants may experience powdery mildew infections. These infections are rarely fatal, though, and you can minimize them by increasing airflow to the plant and lowering the humidity.
Fertilizing
An added benefit of growing this plant is that it never requires fertilizer! This native performs well in low-nutrient soils and struggles to grow where nutrients are highly available. Plant yours in an area that has good drainage, and they should grow without issue. Steep drainage allows the nutrients to flow freely out of the soil, and it will help your plants grow tough and hardy.
Maintenance
American basketflower’s maintenance is minimal and dependent upon what you prefer to do in the garden. If you appreciate a natural, wild look, let these wildflowers grow freely without pruning them. For a more formal garden look, deadhead the flowers when they’re done and watch as your plants sprout new ones!
Placing compost on the soil each year leads to abundant flowers in the summer. Compost adds beneficial structure to the soil, and it adds low amounts of nutrients that won’t harm your flowers or their growth.
Growing In Containers
These annuals adapted over time to survive in plains and open spaces, yet they grow surprisingly well in containers, too! If you prefer these plants to stay contained, or you lack the space to plant them in the ground, try growing them in containers!
Use free-draining soil in the container, as this plant doesn’t like to stay wet. In areas with extreme frost, plant seeds in the early spring, and in all other areas, plant them in the fall. Keep the soil moist while the seeds germinate.
After the seedlings grow into baby plants, they require less water to function. Water once the soil in your container is dry, and place your container in full sun. Then, watch as they grow into tall flowering plants in the summer!
Propagation
This annual wildflower grows freely from seeds. After flowering occurs in the summer, the flower heads form seeds to drop on the ground. To propagate this plant, simply let the seeds drop on the soil! The next year, they’ll grow into your second generation of American basketflowers.
In gardens with extreme freezes during the winter, you can cheat the seasons by sowing seeds in pots indoors. Take the seeds inside in the fall and keep them in a cool, dry, and dark location. Then, a week or two before your last frost date, sow the seeds in pots indoors. After the last frost, bring your plants outside and place them in full sun. Keep them on a stoop in a container, or transplant them directly into the ground.
When you collect native plant seeds, be sure not to collect more than a fourth of a single plant’s seeds. This ensures that the plants continue reproducing healthily in the wild by allowing them to keep most of their seeds. When seed collectors overharvest wild plants, it negatively affects their future livelihoods in nature.
Common Problems
Easy to grow and care for, American basketflowers have few cultivation issues. If your plants are experiencing growing issues they are quick to fix with a little care and attendance.
Lack of Flowers
American basketflower plants need full sun to flower profusely. If your plant grows stems with leaves but no flowers, it may be experiencing a lack of sunlight. Transplant your plant to an area with more sun, or prune overhead branches to allow more sunlight to reach the plant.
Yellow Leaves
At the end of the season when frost arrives, this plant normally yellows, and browns, and then dies. If your plant has yellow leaves during the growing season, it could be experiencing a moisture issue with its roots.
Address this problem by watering less. Only water your plants once the top few inches of soil have dried. Then, water completely and fully, and let the soil dry before watering again.
Pests
Aphids may attack this plant, although it is a rare occurrence. Simply spray them off your plants with a strong stream of water or squish them with gloves on. A third option is letting them be. Over time, the aphid populations attract ladybugs and other predators that devour aphids.
Diseases
In humid areas, American basketflower plants may become infected by powdery mildew. Although unsightly with white, powdery growth on a plant’s leaves, it is rarely fatal. Cut off infected leaves, and try to increase airflow to your plant. Watering the soil at ground level and not using overhead watering will further reduce powdery mildew infections.
Frequently Asked Questions
Why should I plant an American basketflower?
Plant this native plant in your yard to invite local fauna into your space. Native plants and animals evolved compatibly over time, and many have unique partnerships with each other. American basketflowers are a favorite of hummingbirds, bees, and native pollinators.
Where does the American basketflower thrive?
This plant naturally grows in meadows, prairies, and open spaces with full sun. Mimic these conditions in your garden, and this annual will thrive every year.
Why isn’t my American basketflower flowering?
This annual wildflower requires full sun to flower fully. Plants grown in the shade may not flower as much as plants grown in more suitable conditions.
Final Thoughts
Ditch the boring non-native annuals at the nursery this year, and try growing American basketflowers from seeds! This native annual wildflower loves to grow in the U.S., and it perks up any garden it is a part of. Plant some today, let them produce seeds, and you’ll have beneficial native wildflowers in your garden for decades to come!