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    Flowers

    Cardinal Flower Guide: How to Grow & Care for “Lobelia Cardinalis”

    Read our guide to Cardinal Flower for everything you’ll ever need to know! Tips for planting & caring for "Lobelia Cardinalis"
    Miruna SecuianuBy Miruna SecuianuMarch 7, 2022
    Cardinal Flower
    Cardinal Flower Guide: How to Grow & Care for “Lobelia Cardinalis”
    Affiliate Disclosure: We independently test & research all products reviewed on the site. We may earn a small commission if you buy through one of our links. This does not affect our reviews or placement of products on the site.

    If you are looking for a special flower to impress your guests and your plant-loving family members, you might want to check out the amazing Lobelia cardinalis a.k.a. Cardinal flower! As attractive as it obviously is, this plant will impress any gardener, be it a beginner or an experienced one.

    Lobelia cardinalis, also known in cultivation as Cardinal flower, is a species of flowering plant that belongs to the Campanulaceae family. This fancy flower has everything it needs to find some room in your personal plant collection: besides its unique, vibrant appearance, it is also very easy to grow, care for, and even propagate.

    Without a doubt, the Cardinal flower has gained lots of popularity worldwide as an ornamental plant. Although the species alone is more than enough for every respectable grower, it also comes along with other hybrids and forms to choose from. The most appreciated Cardinal flower cultivars include L. cardinalis ‘Queen Victoria’ (red flowers and silvery-burgundy foliage), L. cardinalis f. alba (white flowers), and L. cardinalis f. rosea (pink flowers).

    Keep reading to find out more about the Cardinal Flower!

    About Cardinal Flower

    Contents

    • 1 About Cardinal Flower
    • 2 Cardinal Flower Features: An Overview
    • 3 Growing Cardinal Flower
    • 4 Planting Cardinal Flower
    • 5 Watering Cardinal Flower
    • 6 Propagating Cardinal Flower
    • 7 In Conclusion
    • Cardinal flower is native to various regions of the Americas, starting from southeastern Canada through the United States, Central America, Mexico, and northern Colombia. It grows mostly in wet places, swamps, and streambanks.
    • The Lobelia cardinalis species and the gorgeous L. cardinalis ‘Queen Victoria’ cultivar are among the winners of the prestigious Award of Garden Merit of the Royal Horticultural Society.
    • This plant is super versatile, being a welcomed addition to all types of landscape decorations. It is a wonderful plant for cottage gardens, wild gardens, butterfly gardens, bog gardens, rain gardens, beds, borders, and near streams or ponds.
    • Cardinal flowers will look absolutely fabulous near other species of plants. The most suitable companions are Bee Balm, Blue Vervain, Bristly Buttercup, Monkey Flower, Montbretia, Red Hot Poker, Sneezeweed, Spotted Cowbane, Swamp Milkweed, Swamp Rose, Water Parsnip, and Wild Iris.
    • The profusion of hypnotic, cardinal red flowers is a magnet for several species of pollinators. The blossoms attract butterflies, hummingbirds, and beneficial insects.
    • Zuni people use Cardinal flower as an ingredient in the recipe of “schumaakwe cakes”. On the other hand, Penobscot folks smoked the dried leaves of this plant as a substitute for tobacco.
    • Cardinal flower plays an important part in traditional medicine. This plant is thought to relieve the symptoms of different health problems, such as stomach aches, fever, colds, headache, nosebleed, swelling, worms, rheumatism, syphilis, and epilepsy,
    • Lobelia cardinalis is potentially toxic to both humans and animals if ingested in large quantities. For safety purposes, make sure you grow this flower in a location where your curious kids, cats, or dogs cannot reach them.
    Cardinal Flower
    Cardinal Flower

    Cardinal Flower Features: An Overview

    • Cardinal flower belongs to the Lobelia genus that consists of 415 species of flowering plants. It shares this genus with other eye-catching species like L. chinensis, L. erinus, L. inflata, L. laxiflora, L. sessilifolia, L. siphilitica, L. telekii, L. tenuior, or L. tupa.
    • Lobelia cardinalis is an herbaceous flowering perennial. It is a clump-forming plant that can reach from 2 to 4 feet (60-120 cm) in height and 1 to 2 feet (30-60 cm) in width.
    • Its foliage comprises slightly large, glossy, lanceolate to oval, tooth-edged, and bright green leaves that appear alternately arranged on upright stems. The leaves measure up to 8 inches (20 cm) in length and a maximum of 2 inches (5 cm) in diameter.
    • Cardinal flower usually blooms from summer through early autumn. During this period, it exhibits brilliant, deeply five-lobed, two-lipped bloomings on erect racemes of up to 28 inches (70 cm) tall.
    • The flowers can grow as long as 2 inches (5 cm). They show up in various shades of red. Like its relatives L. siphilitica (Great lobelia) and L. inflata (Indian tobacco), Cardinal flower excretes a milky liquid from its blossoms.

    Growing Cardinal Flower

    The lighting preferences of the Cardinal flower will directly depend on the area you are growing it in. In general, the plant can thrive in full sunlight to partial shade. If you live in a region with cold temperatures overall, this flower will grow just fine in plenty of bright, direct light. In hotter climates, however, Cardinal flowers will appreciate some shade, especially during the intense afternoon sunlight and summer months.

    In terms of temperatures, the Cardinal flower is hardy in the USDA zones 3 through 9. Although this plant can tolerate a wide variety of temperatures, you will still have to protect it from freezing conditions or frost to help them overwinter. As a rule, the best way to do this is to add a layer of mulch around the roots of your Cardinal flower in early fall.

    From time to time, some pests like aphids, spider mites, snails and slugs, or leafhoppers may bother your Cardinal flower. These intruders tend to feed on the leaves and stems of your plant, so it will be pretty easy to spot them on time. If you notice any suspect moves on your Cardinal flower, you can apply neem oil or insecticidal spray once every week to get rid of the pests.

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    RJqutel Lobelia Flower Red Cardinal Flower Seeds Heirloom No-GMO Wildflower 75 Seeds
    • The Red Cardinal Flower is a perennial that has crimson leaves and spikes with scarlet flowers on 2-3' tall stems.
    • Grows well near wet areas.
    • Plant cardinal flower seeds in the late fall or early spring. They can be slightly difficult to germinate and need to be placed in a freezer for 60 days before planting in the spring. This is not necessary for late fall plantings.
    • Red cardinal is a perennial wildflower that attract bees, butterflies and hummingbirds, but not cardinals! Their bright red blooms surrounded by fine toothed dark green leaves, will draw attention to your flower beds.
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    Bestseller No. 2
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    Cardinal Flower Seeds - Lobelia cardinalis -700 Seeds or .05 Gram
    • Lobelia Cardinalis Seeds! These seeds are tiny! || FREE SHIPPING || NON GMO
    • These TINY seeds produce a plant that is easily grown in rich, medium to wet soils in full sun to part shade. Needs constant moisture. Tolerates brief flooding. Soils should never be allowed to dry out. Tolerates full sun in northern climates, but appreciates part afternoon shade in hot summer climates of the lower Midwest and South. Root mulch should be applied in cold winter climates such as St. Louis to protect the root system and to prevent root heaving.
    • Direct sow in late fall, planting on the surface of the soil since these seeds need light to germinate. For spring planting, mix the seed with moist sand and store it in the refrigerator for 60 days before planting. To start indoors, sow the seed 6-8 weeks before the last frost of spring and keep the soil lightly moist until germination. Transplant the seedlings as soon as they can safely be handled and there is no chance of frost
    • Further details for Lobelia cardinalis Optimal Growing ConditionsAppearance and Characteristics Sun Exposure Full Sun or Partial Shade Soil Type Normal or Sandy or Clay Soil pH Neutral or Alkaline or Acid Soil Moisture Moist or Wet Care Level ModerateFlower Colour Red Blooming Time Mid Summer Late Summer Early Fall Foliage Color Deep Green Plant Uses & Characteristics Accent: Good Texture/Form Attracts Butterflies Attracts Hummingbirds
    • Poisonous/Toxic Specimen Waterside Wild Flower Woodland Flower Head Size Very Large Height 90-120 cm 35-47 inches Spread 45-60 cm 18-23 inches Foot Traffic None Growth Rate Medium Zellajake Farm and Garden: "Seeds for all your planting needs since 2013"
    $2.79
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    Everwilde Farms - 2000 Cardinal Flower Native Wildflower Seeds - Gold Vault Jumbo Seed Packet
    Everwilde Farms - 2000 Cardinal Flower Native Wildflower Seeds - Gold Vault Jumbo Seed Packet
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    • Bulk Seed is Excellent for Immediate Planting or for Long Term Storage as an Emergency Seed Vault
    • Detailed Planting Instructions on Back – Online Info also available via QR Code
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    Last update on 2023-02-22 / Affiliate links / Images from Amazon Product Advertising API

    Planting Cardinal Flower

    Cardinal flower does well in moist to wet soils that are rich in organic matter and nutrients. This plant will be your best friend if you are the type of gardener that tends to water its companions too often. Unlike other species that develop root rot in lots of moisture, the Cardinal flower actually loves this particular condition. Besides the reason mentioned above, we suggest you mulch the soil of your plant to increase moisture retaining.

    Another great feature of the Cardinal flower is that it does not require frequent fertilizing to grow healthy and happy. In fact, the plant will perform nicely only with an application every year. For optimal results in the following active growing period, make sure you add some compost and other organic materials in the soil in either late winter or early spring.

    If your Cardinal flower begins to grow somewhat leggy, you can always trim it back to obtain that attractive bushy appearance. Likewise, it is wise to remove all spent blossoms you can find from your Cardinal flower. This process will provide this plant with an overall clean look and also promote further blooming. Still, you should know that deadheading may prevent the plant from self-seeding, which could affect the next year’s growth.

    Watering Cardinal Flower

    Since Cardinal flowers can grow in a wide range of conditions, especially wet ones, it is almost impossible to over-water them. All you have to do to keep your plants in shape is to maintain their soil constantly moist. Or even wet! Make sure you provide your Cardinal flowers with a nice, deep drink whenever the top layer of soil feels dry to the touch.

    When it comes to humidity, there is no surprise that Cardinal flowers enjoy plenty of it. If you live in a region with frequent rainfalls, these plants will be in their element. However, in drier areas, we recommend you mist your plant regularly to keep the humidity levels as high as possible.

    Propagating Cardinal Flower

    If you want to enrich your plant family with more Cardinal flower beauties, the solution is right under your nose. You can easily propagate your plant through division or seeds. Both methods require no prior experience of propagating other plants and will typically show lovely results in little to no time.

    To propagate your Cardinal flower using division, you must first dig the plant out of the soil in either spring or autumn. After this process, cut the root system into two or three sections, then replant each of them in its own permanent location. Likewise, you can remove young specimens that grow around your mature Cardinal flower and transplant them wherever you want to.

    Lobelia Cardinalis
    Lobelia Cardinalis

    Cardinal flower tends to self-seed, so you will not need to collect its seeds to start new plants. However, if you want to keep the seeds for another time, you can collect and store them in the refrigerator until the time is right. Make sure you remove the seeds from the mother plant only when the seed pods begin to open.

    Once you are ready to make more Cardinal flowers, remove the seeds from the refrigerator, then sow them on top of moist soil. The seeds will germinate better if you sow them about six to eight weeks before the last frost from your area indoors in a container. Place the seeds in a well-lit location and keep the substrate constantly moist. When the last danger of frost has passed, you can transplant the young Cardinal flower seedlings into the garden.

    In Conclusion

    If you are a big lover of unique flowering plants, Lobelia cardinalis a.k.a. Cardinal flower is a must-have that you’ll enjoy seeing every summer. Its vibrant, brilliant red flowers will not only bewitch you with their obvious charm but will also catch the eye of any passerby.!

    Are you growing Lobelia Cardinalis a.k.a. Cardinal Flowers? Let us know in the comment section!

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    Previous ArticleMiniature Roses Guide: How to Grow & Care for “Mini Roses”
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    Miruna Secuianu
    • Website

    Miruna is an experienced content writer with a passion for gardening. She is the proud owner of an outdoor rose garden and an indoor collection of tiny succulents. She bought her first succulent 10 years ago - an adorable Echeveria Setosa. Now she owns more than 100 succulents and cacti of different colors, shapes, and sizes. Miruna is a versatile writer and, as you might have guessed, her favorite topic is gardening. Contact miruna@gardenbeast.com

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    1 Comment

    1. Colin Jones on August 30, 2022 7:01 pm

      First time i have grown fhese lovely plants got then il containers 4 so will hopefully over winter them and split them next soring

      Reply

    Leave A Reply Cancel Reply

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