Compost or a complete fertilizer.
Nerium oleander /ˈnɪəriəm ˈoʊliː.aendər/ ændər is an evergreen shrub or small tree in the dogbane Family, apocynaceae toxic in all its. parts Nerium oleander /ˈnɪəriəm ˈoʊliː.aendər/ ændər is an evergreen shrub or small tree in the dogbane Family, apocynaceae toxic in all its. Parts it is the only species currently classified in the Genus. nerium Oleander, or Nerium oleander, is an evergreen shrub and a perennial. It grows best in desert environments. They are hardy, require little maintenance and produce beautiful flowers. They don't need much water, and they can live in poor soil as long as there is a lot of sun. Oleander shrubs can grow as high as 20 feet!  The oleander (Nerium oleander) grows as a rounded shrub, but it can also be trained as a small tree. These multibranched evergreens have dense, dark foliage that makes a thick screen; they’re often used to define borders in home landscapes or add privacy to the yard. Changing pH. Before planting oleanders, test your soil’s pH level. Most garden centers and nurseries sell at-home pH test kits that can give you a reasonably accurate measurement of your soil’s pH. Oleander plants (Nerium oleander) are among the most versatile of shrubs, with dozens of uses in southern and coastal landscapes. They tolerate a wide range of conditions, including difficult soil, salt spray, high pH, severe pruning, reflected heat from pavements and walls, and drought. Oleander care is easy and this makes the shrub popular with highway departments. You’ll often see masses of oleander shrubs planted in highway beautification projects where they provide an outstanding display of long-lasting flowers with very little maintenance. Nerium oleander /ˈnɪəriəm ˈoʊliː.aendər/ ændər is an evergreen shrub or small tree in the dogbane Family, apocynaceae toxic in all its. Parts it is the only species currently classified in the Genus. Nerium it is most commonly known as, oleander from its superficial resemblance to the unrelated Olive. olea Nerium oleander /ˈnɪəriəm ˈoʊliː.aendər/ ændər is an evergreen shrub or small tree in the dogbane Family, apocynaceae toxic in all its. Parts it is the only species currently classified in the Genus. nerium Oleander Care. When planted in soil with a proper pH, oleanders will grow from 3 to 20 feet tall and up to 10 feet wide. These adaptable evergreens are hardy in U.S. Department of Agriculture plant hardiness zones 9 to 11 and can thrive in a range of conditions, including drought, salt, and poor and sandy soil. Changing pH. Before planting oleanders, test your soil’s pH level. Most garden centers and nurseries sell at-home pH test kits that can give you a reasonably accurate measurement of your soil’s pH. All parts of the oleander are toxic if ingested, and skin contact can cause a rash. The beautiful, fragrant -- and all-over toxic -- oleander (Nerium oleander) is a shrub that survives tough conditions. For 10-10-10 fertilizer, you'd need to apply an entire 20-pound bag over 1,000 square feet to get 2 pounds of nitrogen (.10 X 20 = 2), or .4 pounds for a 20-square-foot area around a single shrub (20/50 = .4).
https://en.wikipedia.org/wiki/Nerium_oleander http://www.gardenguides.com/177-oleander.html http://homeguides.sfgate.com/oleander-bushes-like-acidic-soil-68648.html http://www.gardeningknowhow.com/ornamental/shrubs/oleander/oleander-growing-tips.htm https://en.wikipedia.org/wiki/Nerium_oleander http://homeguides.sfgate.com/oleander-bushes-like-acidic-soil-68648.html http://homeguides.sfgate.com/fertilizer-use-oleander-93194.html
what kind of fertilizer does a oleander like?