Questions I Often Get About Planting Bougainvillea. I'm stuck with some bougainvillea, a heritage from my mother, which are a nuisance, being watered weekly. 3. Water the plant immediately if it looks wilted. A fairly new introduction to the long list of Bougainvillea varieties, ‘Torch Glow’ offers the same infamous drought and heat tolerance as other varieties without the need of a trellis for support. Use this landscape guide as a resource for your watering. Watering frequency will vary depending ... Read More about Arizona Landscape Watering Guidelines Scientific: Bougainvillea hybrids (most are either B. glabra, B. spectabilis, B. brasiliensis, or more commonly hybrids) Common: bougainvillea Family: Nyctaginaceae Origin: Brazil Pronounciation: Boo-gan-VEE-ya HI-brids Hardiness zones: Sunset 5-6 as annual, 12, 13, 15-17, 19, 21 USDA 9 (will sustain foliage and stem freeze damage most winters), 10 - 11 . However, they should not be watered every day. Bougainvillea is not your typical houseplant—in its natural state, it's a sprawling climber and shrub with formidable thorns, often found on the exterior of buildings (like climbing up a trellis or over a fence) or in gardens in subtropical-to-tropical climates. Citrus trees require large amounts of water, especially in the summer months. Note: Keep bougainvillea on a slightly drier side for abundant blooms. Bougainvillea may be used as an annual […] In Tucson, bougainvillea is subject to damage during our sub 32 degree nights. Best planted against a warm south or west facing wall or in a container that can be moved for protection in the winter. Do I really not need to water bougainvillea? Multiple stems grow upright from the base of the plant, and leaves cling closely to the branches, giving this shrub an interesting, twisting appearance. I find that they flower best in this region - their flowering patterns are variable. Rating Content; Positive: On Aug 22, 2011, konarikcy from nicosia, Cyprus wrote: Hello I have been growing bougainvilleas in my mediterranean garden for many years. In winter, when they go dormant, watering them once a week is enough. It is always a good idea to water deeply when the topsoil goes dry, rather than shallow watering them frequently. Instead, water with large amounts of water infrequently: about once every five to seven days in the summer and once every 10 days in the fall and spring. Feeding a bougainvillea too much nitrogen or giving it too much water will keep the plant in “growth mode” and prevent it from flowering. Arizona Gardening. Like all plants, bougainvilleas start out relatively small, but will quickly take … This is meant to be a guide and you will need to make adjustments as needed depending on the plant. Bougainvilleas are pretty drought tolerant and don’t ask for frequent waterings. Bougainvillea blooms on new growth. BOUGAINVILLEA In its native South America, bougainvillea is an evergreen, shrubby vine. The "Torch Glow" cultivar of the popular shrubby vine bougainvillea shares a climbing nature and showy blossoms with its plant family cousins. LANDSCAPE WATERING GUIDELINES How Much & How Often Water to the outer edge of plant’s canopy and to depth indicated. Bougainvillea is a heavy feeder and requires regular fertilization to produce blooms throughout the growing season. Caring for Torch Glow Bougainvillaea. It does appreciate regular feeding, however, so fertilizers with lower amounts of nitrogen are often recommended for the best flower production (nitrogen is the first of the three numbers listed on the fertilizer’s label). 8 years ago. Having a bougainvillea in your garden, either in a pot or in the ground, is always joyful due to the gorgeous flush of color. ccarroll. 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