poinsettias Why do poinsettias bloom in the winter? Get the latest science news and technology news, read tech reviews and more at ABC News. First popularized as houseplants in the mid-twentieth century, poinsettias actually are a shrubby tree in their native Mexico. How to Get a Poinsettia to Bloom - Home Garden Joy Answer: Poinsettias bloom when the days get shorter. Likewise, how do you grow poinsettias outside? Therefore, move the poinsettia to a location where it will not receive any nighttime light or cover it with a box. It was introduced to the United States in 1828 and got its name from Joel Roberts Poinsett. Maintain night temperatures in the low 60 degree F range. For holiday flowering, do not prune your poinsettias after September 1. This post is part of the Science Tuesday feature series on the USDA blog. Poinsettias can not live outside where the temperatures drop below 45 degrees and they can not tolerate frost. The poinsettia (/ p n s t i / or / p n s t /) (Euphorbia pulcherrima) is a commercially important plant species of the diverse spurge family (Euphorbiaceae).Indigenous to Mexico and Central America, the poinsettia was first described by Europeans in 1834. In Mexico, a special feast is traditionally celebrated every 12th of December and Poinsettias are the star of the show! Poinsett was a botanist, physician and the first United States Ambassador to Mexico. The poinsettia originates from Mexico and was introduced to the US back in 1828 by Mr Joel Roberts Poinsett, the then US diplomat in Mexico. Poinsettia's botanical name, Euphorbia pulcherrima, means "the most beautiful Euphorbia". Keep poinsettias away from cooler locations and avoid exposing them to temperatures below 50 F. Water poinsettias when the soil is When you are growing poinsettia plants outside, choose a spot with Plant them in a sunny, well-drained location protected from north winds and frost. But what is the actual cold hardiness of poinsettias? "By the Day of the Dead, on early November, starts the season for selling nochebuenas ," Hernndez said (that's Spanish for both Christmas Eve and the name of poinsettias). Enjoy Them Again! The most common colors for the bracts that we call flowers are red, orange, pink, pale green, cream, white and marbled. In their native Mexico, poinsettias are a perennial shrub that can grow up to 15 tall! How to Rebloom A Poinsettia Year After Year. Even leaving a poinsettia outside when its around 50 degrees regularly or for extended periods of time can cause damage. Furthermore, how do you get a poinsettia to bloom again? Beginning in late September or early October, make certain the poinsettia receives no artificial light after nightfall. When days get shorter, it is a sign for the plant to start blooming. Make sure to protect them from dramatic temperature drops as this will cause their leaves to prematurely wilt. While they can tolerate light frost, they thrive in temperatures between 55 and 70-degrees with high humidity. Julie Marcus is a senior horticulturist with the Lady Bird Johnson Wildflower center at the University of Texas. These trees, in their wild form widely grow across Mexico to Guatemala. Courtesy photo. Even though their sales period is just 6 weeks each year, poinsettias rank as one of the countrys best selling potted plant. Mexican beauties: Poinsettias are native to Mexico, where theyre called Flor de Nochabuena, (Christmas Eve flower) because thats when Poinsettias do not like to be cold at all. Poinsettias are native to Central America and originally flourished in an area of southern Mexico. What country does the poinsettia come from? The poinsettia made it way to the United States in the early 1800s through the efforts of the first U.S. ambassador to Mexico, Joel Roberts Poinsett. Maintain night temperatures in the low 60 degree F range. Poinsettias bloom naturally in October signaling the coming of Christmas. Give your poinsettia indirect sunlight between 8am and 5pm, but then put the plant in a pitch black room (or cover it with a bucket if black-out curtains aren't your thing) from 5pm until 8am. Intolerant of the cold, in the North, it is grown almost exclusively indoors. It is particularly well known for its red and green foliage and is widely used in Christmas floral displays. Greenhouse growers use shade cloth to shorten the days beginning in October so they will be in bloom by Thanksgiving. Dont fertilize your poinsettia when its in bloom. "Poinsettias do not require fertilizer while they are in bloom from the fall to the winter," says Musgrave. He introduced this tree to the United States in the early 1820s. Poinsettia's botanical name, Consequently, where do poinsettias grow? Flowering actually begins after about two months of this short-day treatment, about a month before Christmas. They can grow up to 16 feet tall in their natural environment Thank goodness our Christmas plants don't get that big! But first, a little family history. This article focuses on the poinsettia tree, its characteristics, propagation, caring, and uses. To coax a poinsettia plant to bloom again, it's necessary to repeat the poinsettia life cycle. Poinsettia is the common name given to a species of shrub known scientifically as Euphorbia pulcherrima. The name poinsettia is derived from his name. If you manage to keep your potted poinsettia alive until next fall, Poinsettias: Helping an Icon to Bloom at the Right Time. I have also included instructions on how to do this, too. Do this earlier if theres a chance of temperatures dropping below 50 o F. In most areas, thats around September. Historically, poinsettias were used to decorate churches in Mexico and Guatemala and for medicinal purposes and fabric dye by the Aztecs. You see, the poinsettia is a short-day plant, that is to say, it only blooms when days are less than 12 hours long. So yet more leaves drop off because it is thirsty. Allow plenty of light during the day so the plant can absorb enough energy for flowering. Poinsettias are not poisonous to pets or children as commonly believed unless ingested in large quantities.
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