Q&A for How to Grow Bougainvillea

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  • Question
    How do you propagate Bougainvillea?
    Monique Capanelli
    Plant Specialist
    Monique Capanelli is a Plant Specialist and the Owner and Designer for Articulture Designs, an innovative design firm and boutique in Austin, Texas. With over 15 years of experience, Monique specializes in interior botanical design, living walls, event decor, and sustainable landscape design. She attended the University of Texas at Austin. Monique is a Certified Permaculture Designer. She provides plant and botanical design experiences, from small gifts to entire transformations, to shoppers as well as commercial clients including Whole Foods Market and The Four Seasons.
    Plant Specialist
    Expert Answer
  • Question
    How many times per day do I need to water the plant?
    Katie Gohmann
    Professional Gardener
    Katherine Gohmann is a Professional Gardener in Texas. She has been a home gardener and professional gardener since 2008.
    Professional Gardener
    Expert Answer
    It's not as simple as that. You need to stick your finger into the soil up to the knuckle. If the soil at the bottom (the tip of your finger) is damp, don't water. If it's dry, give the plant a good drink. I recommend checking the soil every day- but that doesn't mean you will water every day.
  • Question
    My leaves are curling up. What should I do?
    Katie Gohmann
    Professional Gardener
    Katherine Gohmann is a Professional Gardener in Texas. She has been a home gardener and professional gardener since 2008.
    Professional Gardener
    Expert Answer
    Sometimes curled leaves mean you have an insect problem. Check the top and underside of the leaves for bugs, and use an insecticidal soap, insecticide, or oil to get rid of them. The flowers won't last forever- when they fade, trim them off, and trim the whole plant back a few inches. It should reflower after a while.
  • Question
    When is the best time of the year to plant Bouganvillea?
    Katie Gohmann
    Professional Gardener
    Katherine Gohmann is a Professional Gardener in Texas. She has been a home gardener and professional gardener since 2008.
    Professional Gardener
    Expert Answer
    Ideal time is the spring, but you can probably get away with planting in the summer as well. You want the plants to be well-established before cooler temperatures begin.
  • Question
    I have planted 5 bougainvillea about a month ago, now most of the foliage has dropped off. What can be the cause of this?
    Katie Gohmann
    Professional Gardener
    Katherine Gohmann is a Professional Gardener in Texas. She has been a home gardener and professional gardener since 2008.
    Professional Gardener
    Expert Answer
    Might be a water issue. Make sure you are watering deeply and then letting the top few inches of the soil dry out before watering again. It could also be from the temperature. Bougainvillia like warmth and will drop leaves if they get too cold.
  • Question
    Can I propagate the plant from cuttings?
    Community Answer
    Yes. According to the University of Hawaii, the cutting should be at least ⅛ inch thick and include three to five nodes. (Nodes are small protrusions on a plant's stem.)
  • Question
    What colors are bougainvilleas? Is one color fuchsia?
    Community Answer
    Yes, fuchsia is one color. The plant also comes in red, white, purple, orange and yellow. Do an online search for images.
  • Question
    Why doesn't my bougainvillea flower?
    Community Answer
    Overwatering can prevent blooms, and bougainvilleas need very little water. If you've been keeping it fairly dry, the plant may need less fertilizer, less pruning, or more sun.
  • Question
    What is the minimum overnight temperature a bougainvillea can tolerate?
    Community Answer
    Most bougainvilleas can tolerate 65ºF (18ºC) night temperatures, but there are variations of a few degrees depending on species.
  • Question
    My plant is dropping all its beautiful blooms! What have I done?
    Community Answer
    Nurseries usually sell bougainvilleas at the height of their blooming period. Unfortunately, beautiful as they are, the blooms can't last forever. Yours is probably going into a growth period that should be followed by another period of blooms; don't worry. Be sure to keep the plant almost dry to promote blooms in the future.
  • Question
    Our bougainvillea has flowers but very few leaves. It looks twiggy. What is wrong?
    Community Answer
    It's hard to say, but in general this type of problem is often related to the wrong fertilizer ratio. Too much nitrogen can result in fast, spindly growth with dark green leaves. Too little nitrogen can lead to slow growth, yellowing, and early leaf drop.
  • Question
    Can a bougainvillea be grown from seed?
    Community Answer
    Yes, by sowing them in soil and transplanting the seedlings.
  • Question
    Do I need to dig them up each year if I live in Wisconsin? Or can I cover it with leaves for the winter?
    Community Answer
    You need to dig them up. They will turn to mush in freezing or frosty temperatures.
  • Question
    I'm losing blossoms constantly. What could be causing this?
    Community Answer
    Overwatering. Keeping the soil too wet will cause the plant to lose its blooms.
  • Question
    How far apart should I plant them?
    Community Answer
    Plant your bougainvilleas at least 12 inches apart. These plants have vigorous growth, and their thorns will make pruning difficult if they too close to each other.
  • Question
    I live in Portland Oregon. Is it safe to plant this in the ground in Oregon, or should I plant them in pots?
    Community Answer
    Definitely plant in a container. While a potted plant tolerates thirties quite well, it is also protected from frost.
  • Question
    How do I train them into a tree?
    Community Answer
    I planted three small Bougainvillea at the base of our lemon tree and ignored them. Now, two seasons later, all three Bougainvillea have grown over 15 feet and are blooming beautifully between the branches of our lemon tree. You can tie the vines of your Bougainvillea around the trunk of your tree, or just ignore them; in a year or two, you'll have beautiful Bougainvillea blossoms showing off by cascading from the branches of your tree.
  • Question
    Something's eating my bougainvillea, but I don't see any bugs. How can I stop it?
    Community Answer
    Nocturnal or well-hidden pests include the bougainvillea looper caterpillar (scalloped edges), slugs (larger holes), or leaf miners (a network of tiny lines in young leaves). A garden supply store can sell you pheromone traps or Bt treatments, depending on your pest.
  • Question
    Why do my hibiscus leaves keep turning yellow?
    Community Answer
    They need magnesium. Sprinkle epsom (magnesium sulfate) around the plant once every three weeks. Water deeply once or twice a week.
  • Question
    How do I winterize them in the basement?
    Don Kania
    Community Answer
    I have found a little known invention by Nicholas Tesla which has made a comeback lately very useful - induction lighting. It does not use a filament, but works off of electric magnets that activate the gas in the tube. It doesn't produce a lot of heat and the bulb can be handled when lit and it will not burn you. I've tried LEDs, but Induction lighting produces better growth. My bougainvillea thrive better in the grow room than they do outdoors in the summer. Another bonus is the induction lighting doesn't consume a lot of electric. I have found about 8-12 inches above the plants is perfect.
  • Question
    How do I keep it against the wall? It keeps leaning out away from the wall.
    Community Answer
    The plant will grow toward the sun. To keep it against the wall, you need to either tie it there or twine it behind your trellis or support.
  • Question
    How do I care for it indoors in the winter?
    Community Answer
    Continue to water it during the cold months and let it get sunshine in the evening for about an hour.
  • Question
    My leaves have white spots on them and there are leaves with multiple holes. What should I do?
    Community Answer
    It sounds like your plant has a disease. Talk to your local garden center for advice.
  • Question
    What kind of fertilizer should I use?
    Community Answer
    According to the article, "Most bougainvillea gardeners go with a 1:1:1 or a 2:1:2 fertilizer for regular fertilizing, not the high-phosphate fertilizer used at planting. Organic or slow-release fertilizers work best."
  • Question
    My plant is in a pot - can I bring it in when the temperature drops?
    Community Answer
    It can stay outside all year as long as temps don't drop too much below 18c.
  • Question
    How do I dry bougainvillea flowers?
    Charles Chacko
    Community Answer
    Take a full sheet of dry newspaper. Place the flowers inside the paper and fold it. Place some weight over the news paper, such as a heavy book. Check after four days; if not dried, replace the sheet of newspaper and continue to press until dried.
  • Question
    How do I provide support for bougainvillea?
    Community Answer
    You can add a wooden stake, or you can train it on a fence or trellis.
  • Question
    Why are my leaves curling up a little? I'm keeping the soil fairly dry. My flowers have fallen off, but I am getting new growth.
    Community Answer
    It's not getting enough food. Feeding the plant at least every other mouth is key to a healthy plant.
  • Question
    The leaves are turning yellow with multiple green spots. What is wrong?
    Community Answer
    Might be a pest problem, dehydration, lack of sunlight, or a nutrient deficiency like Zinc, Nitrogen, or Potassium Deficiency.
  • Question
    What is the correct pronunciation of bougainvillea?
    Community Answer
    It's pronounced "boo-gan-VEAL-yuh". It was named after a French botanist.
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