Although some mature rose bay ( Nerium oleander ) may grow up to 20 groundwork improbable , most standard rose bay cultivar mature from 8 to 12 pes tall and just as encompassing . Two oleander cultivars , " Petite Salmon " and " Dwarf Petite Oleander , " are separate as dwarfs , which only grow 3 to 5 base tall .
Growing Basics
" Petite Salmon " oleander , a dense , bushy bush , grows 4 to 5 feet tall , spreading 4 to 6 feet wide . It grow in U.S. Department of Agriculture plant life hardiness zone 8b through 11 , yielding Salmon River - colored blossoms from saltation through fall which are attractive to butterflies and hummingbirds . Not much distinguishes " Dwarf Petite " pink oleander from " Petite Salmon " Nerium oleander other than the color of its flowers . It mature 5 to 6 feet marvellous , but has the same 4- to 6 - foot spread . Dwarf " Petite Salmon " rose bay can be grown in USDA zone 8b through 11 . Deer avoid both these cultivars , and they resist drought and mildew . Both cultivar prefer morning shadowiness follow by full sun for the rest of the Clarence Day . They will originate in all soil type with a pH of 5 to 7.5 . Although they do not like blotto areas , irrigate them deeply when the stain dries out . They will stand wind and salinity spray . They typically do not need fertilizer . They are utilitarian plant as a shrub boundary line , at the base of hedging , around ponds , at the base of build foundations and in medial strip and outdoor life areas .
Disease and Insects
The fungal disease Boryosphaeria dieback that typically appear when oleanders are stressed by drouth or severe freeze can make shoot and branches to turn blackish John Brown and decease . lop off diseased branch . The bright orange oleander caterpillar can rust much of the leafage of an oleander plant life . Your best option is to prune and take away branch infested by the caterpillars . Put the septic branches in a plastic pocketbook and freeze it for 24 hours . As a last resort , spray the caterpillars with a ready - to - use Bacillus thuringiensis atomizer , an organic biological insecticide that will not kill good insect . Spray late in the day so the caterpillars can eat it during their nightly feeding . Repeat every seven to 10 days until the caterpillars go away . Before and after you prune , soak your pruning tools two to five minutes in 70 percent rubbing alcohol and allow them air dry .
Invasiveness
Oleander can spread from 1 to 2 invertebrate foot a yr . It has escaped refinement and become incursive in U.S. National Parks in California , Arizona , Utah , Texas , Louisiana , Mississippi , Alabama , Georgia and Florida and is listed as an invasive species by Florida .
Toxicity
Oleander contains the toxic substances digitoxigenin , neriin , oleandrinand and oleondroside . Do not manducate its leaves or suck ambrosia from its flowers . Honey made from bees that have fed on its ambrosia can also be toxic . Do not burn parts of the plant because the dope is also toxic . symptom let in muzzy vision , seeing halos , low blood pressure , maverick or slow beat , fainting , lethargy and hives . It can be fateful . If you think have been poisoned by oleander call a doctor or the National Poison Control Center 1 - 800 - 222 - 1222 . Do not make regurgitation unless instructed to do so .
References
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