In Tucson, my bougainvilleas look best when watered (via drip irrigation) for an hour a week in spring, summer, and early fall.Īnother result of too much water – is more green growth and fewer flowers. I lived seven blocks from the beach, so they got spring and summer moisture from the maritime layer. I never supplementally watered my bougies in Santa Barbara because they were older and well-established. The soil should be well-drained, helping to prevent rot. It’s subject to a few types of root rot, so don’t over-water. Give your bougainvillea regular water when establishing (in the first couple of years).
It prefers a good, deep watering every 3-4 weeks rather than frequent shallow watering. When it comes to watering, bougainvillea is fairly drought-tolerant once established. Remember, this popular plant that loves sun and heat! Bougainvillea Watering If you live in a climate where bougainvillea is borderline hardy, planting it against a warm wall or in a corner against the house will help.
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Bougainvillea Sun Requirementsīougainvillea needs at least 6 hours of full sun daily to flower profusely and look its best.
Many species of butterflies love bougainvillea. Some of the foliage from the previous season can remain on the plant and eventually falls off as new growth appears in spring. Many varieties will lose part or all of their leaves in climates with winters on the cooler end of the spectrum. Older, established bougainvilleas can withstand a freeze much better than newly planted ones.
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You can find your USDA hardiness zone here by inputting your zip code. One or two random nights around or slightly below freezing will be okay. It doesn’t like to go below 32 degrees Fahrenheit and not for a prolonged period. This flowering machine isn’t a plant for colder climates.īougainvillea is hardy from USDA zones 9b – 11. I’ve found it takes one to three years for new plants to take off, but when they do, they’re off to the races! Bougainvillea Cold Tolerance If it’s not getting enough sun, the growth will be leggy, and you won’t get much flowering.īougainvillea is fast-growing after it gets established in the warmth and full sun that it loves. If bougainvillea is in the right conditions, then it’s fast-growing.
I moved to Tucson, AZ (USDA zone 9a) seven years ago. I lived in Santa Barbara, CA (USDA zone 10b) for ten years. I’ve grown bougainvillea in 2 different climate zones. Bougainvillea Care Tips A close-up of the very floriferous Bougainvillea glabra that grew up & across my garage in Santa Barbara.
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