Ipomoea sloteri is an annual twining vine that was formerly known as Ipomoea x multifida. It is a hybrid between the Cypress-vine (Ipomoea quamoclit) and the related Scarlet morning-glory (Ipomoea coccinea). First produced by L. Sloter in 1908, it took 11 years of crossing to create one successful seed that became the source of all plants. Once it had become fully stabilised after several generations it was given the updated binomial of Ipomoea sloteri.
With the best characteristics of each parent, this very graceful, airy vine is festooned with deep red, pentagon shaped blooms throughout the summer. The deep green leaves have the overall heart shape of Ipomoea coccinea but the divided leaf characteristic of Ipomoea quamoclit. The leaves look like they've been cut with a scalpel and create a beautifully backdrop to the magnificent red blooms.
Commonly called the Cardinal Climber, this is a plant that lives up to its name. The plants bloom with trumpet shaped flowers that are a true cardinal red. The flowers appear from mid-summer and continue blooming well into autumn before being killed by the first frosts of winter. An excellent source of nectar, they are attractive to butterflies and in hotter areas, are a favourite of hummingbirds.
This annual twining vine grows 8 to 12ft in length. The plants tend to bend, wind and tangle, so it can be difficult to determine what their actual size is. The plants are easy to grow from seed, simply space the plants about a foot apart, and provide sun and support. They are a useful and colourful, vertical addition to the garden. Suitable for growing up and over arbors, trellis or an obelisk, they can be useful for covering fences, and posts, and can also be grown in containers.
The plants prefer rich, well drained soils. They tolerate drought, but grow best and produces the most flowers if well-watered. In poor soil add a general purpose fertiliser once a month to provide the fuel they need for their quick growth.
The Cardinal Climber (Ipomoea sloteri) is a hybrid between the Cypress-vine (Ipomoea quamoclit) and the related Scarlet Morning-Glory (Ipomoea coccinea). It is regularly mistaken for one of its parents, Ipomoea quamoclit, the 'Cypress Vine' but they are two distinctly different plants.
The Cardinal Climber grows faster and is much fuller that the Cypress-vine. Both leaves are lacy, but the Cardinal Climber is less so.
It has a new leaf shape with divided foliage, like the Cypress-vine but with the overall heart shape of the Scarlet Morning-Glory.
It blooms with a flower that is most like Ipomoea coccinea, but with sepals most like the Cypress-vine
The Cypress-vine produces numerous seeds and in warmer areas will usually reseed, whereas seed of the Cardinal Climber is best collected and sown to ensure plants for following seasons.
Soak the seed in warm water for a few hours before sowing, in order to soft the hard coat that protects it.
The young plants are frost tender, so sow indoors 4 to 6 weeks before your late frost date, or sow directly outdoors where the plants are to grow once the chance of frost has passed
Transplant seedling outdoors after the low temperatures exceed 10°C (50°F). Leaving it this late will ensure good germination.
Place one large seed in individual small pots of seed compost. Water the pots well after sowing and then wait until the seedlings appear. Watering sparingly afterwards.
Fleece if a frost or cool night is forecast. The seedlings will appear in about two weeks and quickly grow into young plants. These should not be planted outside until the first half of June, after the cool nights of May have long gone.
This climber loves neutral to slightly acidic, nutrient rich, well drained soil in full sun. They will grow happily in a container, where they will last for a long time.
This vine needs a trellis or other structure on which to grow, or provide stout strings to support the vines. They are wonderful twining through other climbers such as roses and clematis on trellis, fences and arch ways.
Plants grow best in a rich, humus soil that is well-drained. Mix plenty of compost and manure into the planting site. Do not over feed nitrogen rich fertiliser, or you will end up with lots of leaves and vines, but few flowers. If you do feel the need to use fertiliser, begin the season with a high nitrogen formula at the beginning of the season. Switch to a high phosphorous formula prior to the blooming period. The flowers of this fast climber, will bloom all year round, in tropical regions.
Use this climber for growing up and over arbors, archways or pergolas, trellis or an obelisk, they can be useful for covering fences and posts in the garden, and can also be grown in containers.
The genus Ipomoea, with over 500 species, is the largest genus in the family Convolvulaceae. The genus occurs throughout the tropical and subtropical regions of the world, and comprises annual and perennial herbaceous plants, vines, shrubs and small trees. Most of the species are twining climbing plants.
Ipomoea sloteri, The Cardinal Climber was developed as a hybrid in the United States and thus has no natural range. Bred in 1908, it is a hybrid between the Cypress-vine (Ipomoea quamoclit) and the related Scarlet morning-glory (Ipomoea coccinea). The parents are both native to America. Ipomoea quamoclit, the Cypress-vine is native from South America up to Northern Mexico. While Ipomoea coccinea, the Scarlet morning-glory is believed to be native to eastern North America from New York, west to Kansas, and south to Florida and eastern Texas.
It took 11 years and an estimated 40,000 to 200,000 attempts to get a stable fertile plant and is thought to have arisen originally from a single seed. The hybrid is now cultivated ornamentally throughout the world.
This interesting species was first created by successfully hybridising Ipomoea coccinea and Ipomoea quamoclit, thus creating the new species of Ipomoea x multifida which, once it had become fully stabilised after several generations was given the updated binomial of Ipomoea sloteri. Produced by L. Sloter in 1908, it is pronounced ih-poh-MEE-a SLO-ter-eye.
Ipomoea is from the Greek ips meaning ‘a worm’ and homoios meaning ‘resembling’ thus 'like a worm,' referring to the twining habit of the plant's growth.
The old species name multifida in Latin means 'splintered', probably referring to the deeply lobed leaves.
Synonyms: Quamoclit multifida, Quamoclit x sloteri, Ipomoea x sloteri. The letter 'x' before the species name refers to it being a hybrid.
Many Ipomoea species are known as Morning Glory, a name shared with some other related genera. It is the common name for over 1,000 species of flowering plants in the family Convolvulaceae. The name of Morning Glory refers to the plants habit of opening its new blooms at the beginning of each day.
Ipomoea is a member of the Convolvulus family, pronounced kon-volv-yoo-lus is taken from the Latin convolvere, meaning to twine around.
- Additional Information
Packet Size 2.5 grams Average Seed Count 95 Seeds Family Convolvulaceae Genus Ipomoea Species sloteri Synonym Quamoclit multifida, Quamoclit x sloteri, Ipomoea x sloteri
Ipomoea x multifida, Ipomoea Quamoclit Cardinalis
Common Name Formerly Ipomoea multifida Other Common Names Incorrectly called the Cypress Vine, Hearts and Honey Vine Hardiness Tender Perennial often used as an Annual Flowers July to October Natural Flower Time Red trumpet shaped blooms Foliage Deep green, fern-like foliage Height If supported vines can reach 3m (12ft) Spread To 1.80m (5ft) Soil Well-drained/light, Dry, Sandy Notes A cross between Cypress Vine (Ipomoea quamoclit) and Red Morning Glory (Ipomoea coccinea) Uses Shrubby Climber