Torenia - Torenia fournieri


Torenia is an annual herbaceous plant with very beautiful and decorative flowers. It belongs to the genus Torenia, which includes about 40 species, and to the family of Scrophulariaceae, a group of flowering plants with over 2000 species. Torenia is native to Africa and Asia; it was discovered for the first time in Thailand, in 1824 and then had a great diffusion. Also in Italy it is quite cultivated; it is very suitable for hanging vases and baskets, given its drooping posture which will allow the creation of cascades of colored flowers that will embellish terraces and balconies; it can also be grown in the garden in the flower beds, as a ground cover plant. There torenia it reaches a height of about 30 cm and has fleshy, prostrate and very branched stems; the leaves are oval, with serrated edges and bright green; the flowers are reminiscent in the shape of small trumpets, they are pink, red, yellow. blue, purple or even two-tone.

Environment and exposure

The torenie must be positioned in a bright place or even in a semi-shaded area; avoid exposing them to direct sunlight, especially in summer when the sun is stronger. They resist heat very well, but fear the cold; in winter it is preferable to place them in a sheltered place and at a minimum temperature of no less than 10 ° C.

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For an optimal cultivation of torenia it is advisable to use a soft soil, so that the roots can penetrate easily, and rich in organic matter; peat and a little sand should be added to the earth, which will favor drainage; it is important that the soil is well drained, as water stagnation could damage the plant.

Planting and repotting

The planting of the torenias must be carried out in spring. The plant is extracted from its pot and freed from the excess earth; a hole is dug that can comfortably contain the roots and the plant is placed there; then it is covered with earth, compressed with the hands and finally watered abundantly. Repotting should be done in spring, when the roots of the plant come out of the container; it is advisable to use a pot that is only slightly larger than the previous one, too large pots should be avoided as this would favor a greater development of the roots at the expense of the growth of flowers and leaves.


The watering of the torenia must be constant and regular; it is advisable to use water at room temperature and not to exceed it to avoid water stagnation; it is preferable to always wait for the soil to dry between one irrigation and another. In summer the watering must be more numerous, while in the cold months it must be decreased.


The torenia must be fertilized with liquid fertilizer for flowering plants, which must be diluted in the water used for watering; fertilizer must be supplied during the flowering period, every 20-30 days. In addition, in spring or early summer, a slow release granular fertilizer can be added to the earth.


The reproduction of the torenia occurs by seed. Sowing must be done in March, in a seedbed. The seeds should be placed in a container with earth and sand, covered with a plastic sheet and placed in a bright and warm place; within a few weeks the seeds will germinate, at this point the plastic will be removed and the light can be gradually increased; when the new plants have become robust enough they can be transferred to single pots.


The torenias do not need a real pruning; just cut the messy branches, in order to give a compact appearance to the plant and eliminate the damaged parts and the withered leaves and flowers. It is advisable to prune with sharp and clean scissors or knives, so as not to damage the plant and prevent the onset of infections.


The torenia begins to bloom from late spring, towards the beginning of June, until October. The flowers are numerous, very decorative and colorful; they are shaped like small trumpets and can be of different colors: pink, red, yellow, blue, purple; there are also some two-colored varieties.

Diseases and parasites

Torenia can be attacked by aphids which damage shoots and buds; in this case the remedy consists in washing the plant with a sponge, to manually remove the parasites and, if this is not enough, using a specific pesticide. In the presence of excessive humidity, fungal diseases can occur, such as powdery mildew and gray mold, which cause the presence of whitish mold on the leaves of the plant; it is necessary to intervene by eliminating the affected parts and, if the damage is extensive, with specific fungicides.


Torenia should be purchased during the flowering period. Before buying it it is advisable to carefully observe the plant; it is necessary to check that there are no diseases and parasites, that the plant has no dry and damaged parts and that it has been sufficiently watered (this can be verified by observing the degree of humidity of the earth in the pot). You need to buy healthy, lush and abundant flowering plants.


The most cultivated species of torenia is Torenia fournieri; it is an annual plant that reaches a height of about 30 cm, has fleshy and very branched stems, light green oval leaves and blue, purple, pink flowers.


The torenia has a drooping habit and lends itself well to being associated with other plants, such as pendulous begonia and drooping ivy; it will be possible to create very decorative floral compositions and real cascades of colored flowers.

Older varieties of torenia didn't always thrive in Florida, but the new Summer Wave® series of torenia is tolerant of heat, heavy rains, and occasionally dry soils. Specific cultivars in the Summer Wave® series include 'Amythyst Ice', 'Silver', 'Violet Ice', 'Large Amythyst', and 'Large Violet'.

Torenia is also known as wishbone flower because it has a unique wishbone shape in the center of each flower. Flowers resemble snapdragons and can be white, yellow, pink, violet, or purple, depending on the cultivar.

Plants usually get about 6 inches tall and can trail up to 30 inches as they grow, making them a great choice for the front of a landscape bed or the edge of a container or hanging basket.

While torenia is generally considered an annual, it should be able to overwinter in zones 10-11.

For the Birds

Native to Asia and Africa, this bushy plant grows seven to 12 inches tall and spreads six to eight inches. But it's not aggressive or invasive, so there's no need to fear a takeover.

Hummingbirds will enjoy torenia's one- by one-and-a-half-inch flowers almost as much as you do, savoring their sweet nectar during the plant's midsummer to mid-fall bloom period.

Its “wishbone flower” nickname comes from the two stamens that grow from opposite sides of the flower, meeting in the middle and forming a structure that resembles a chicken wishbone.

Its "clown flower" nickname comes from its colorful "face." “Bluewing” is derived from its often blue, wing-shaped petals.

Good companion plantings for torenia include impatiens and ferns.

Information sheet u00a0 n botanical name: u00a0Torenia Fournieri n common name: Torenia n family: Scrofulariaceae N flower color: Purple, magenta, yellow, white n bearing: Hanging n soil: Fertile n

From the Scrofulariacee family, native to Africa and tropical Asia, it is a bushy annual plant. There The Torenia plant has leaves, on the fleshy stems, oval with a serrated edge of dark green color. The flowers, produced from early spring to autumn, are small, of various shades of color and in the shape of a trumpet. Thanks to its bushy and drooping posture, as well as in the garden, the Torenia plant is grown in hanging pots or railing boxes. n

Torenia, Bluewings, Wishbone Flower 'Summer Wave Blue'

Family: Linderniaceae
Genus: Torenia (tor-EN-ee-uh) (Info)
Species: fournieri (for-NEER-eye) (Info)
Cultivar: Summer Wave Blue
Additional cultivar information:(PP10843, Summer Wave ™ series, aka Sunrenilabu)
Hybridized by Suntory Ltd.
Registered or introduced: 1997


Water Requirements:

Requires consistently moist soil do not let dry out between waterings

Sun Exposure:


Foliage Color:




Where to Grow:

Can be grown as an annual


Bloom Color:

Bloom Characteristics:

Bloom Size:

Bloom Time:

Other details:

Soil pH requirements:

Patent Information:

Propagation Methods:

From herbaceous stem cuttings

From seed sow indoors before last frost

Seed Collecting:

N / A: plant does not set seed, flowers are sterile, or plants will not come true from seed


This plant is said to grow outdoors in the following regions:

Green Cove Springs, Florida

Maryland Heights, Missouri

Fayetteville, North Carolina

Gardeners' Notes:

On Sep 8, 2008, Rosary615 from Nashville, TN (Zone 6b) wrote:

Planted in Nashville TN in 2007. Interspersed with impatiens in area that received 1.5 hours of early morning sun, then shaded by my house the rest of the day. Torenia & Impatiens did great in spring. We had drought that summer. Watered every 3-4 days, barely enough so perennials didn't die. Impatiens thrived but Torenia burned up immediately. I've had volunteer Torenia plants all this summer but no blooms. I may try Torenia next year, but in a bed in my backyard by my teeny-tiny little creek, where it would be in filtered shade all day and have water as long as the creek runs.

On Jan 24, 2007, stormddancer from Poteet, TX wrote:

I live below San Antoino TX in the heat of summer this plants just puts on a heck of a show. I planted 6 plants in 2002 and have never planted any more, I am blessed with new plants every year. I do nothing special just water and weed and every week a liquid feed. I have some seeds for a yellow one called Lemon Drop and am going to give that a try this year.

On Aug 13, 2006, alph from Wrentham, MA wrote:

This is the 2nd year we've had a "Summer Wave Blue" in a hanging basket here in southeastern Massachusetts. As you can tell by the image I submitted, the plant thrives. I water and feed (very light liquid plant food in the water) every day or two because it gets thirsty fast in the basket. Deadheading is a must. a daily quieting chore. It gets only about 3 hours of direct sunlight, and seems to love the edges of shade on our deck.

On May 1, 2006, htop from San Antonio, TX (Zone 8b) wrote:

This trailing torenia loves the heat and survives our hot Texas summers when other torenias die back. It is hardy to 28F.
The 'Summer Wave' was developed by Suntory Ltd. and licensed by Bear Creek Gardens. It is a cross between the typical torenia and a creeping native species. It can be used in hanging baskets, window boxes and other containers. In landscape beds, it makes a greatr groundcover. Plants reach a height of 6-12 inches and have a spread of 14-16 inches. The blooms are larger than the blooms of regular torenia.

Torenia can best be described as a plump beautiful little plant. It is gaining a lot of attention and acceptance due its low pest attraction.

1). Whitefly infestation: Based on the report of the Australian Government Department of Health, Torenia was observed to suffer minor whitefly infestation.

2). Mold and rot: However, the major problem that you will experience with Torenia is mold and rot. This issue can be easily averted with proper watering techniques and air circulation.


To properly grow Torenia plants in containers, use a rich potting mix and apply water often to the mix to keep the soil moist.

In addition, you can either apply fertilizer continuously as you water or use time release fertilizers.

Torenia is a very beautiful plant, and with these simple steps you can grow and care for your Torenia plant in containers.


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