Reasons Oleander Won't Bloom

Updated April 17, 2017

Nerium oleander, known as oleander or rose bay, is found in the United States in hardiness zones 8 through 11. The plant's blooms appear in spring and come in a number of shades. However, several factors may inhibit the flowers' growth.

Growing Conditions

Oleanders tolerate a wide range of soil conditions, but if the soil isn't well-drained, the plant may not grow as well. Proper sunlight exposure is also necessary to the oleander, so without full or partial sun, its growth suffers.


Not pruning an oleander leads to inhibited flowering. Oleanders develop suckers that need to be removed so that the plant can flower. In addition, removing old flower clusters boosts the amount of new flowers produced.

Diseases and Pests

Certain diseases and pests damage plants to the point that they may not flower. Oleander leaf scorch affects the leaves of the plant, and can kill the plant if unattended. Oleander aphids eat young growth on oleanders, causing flowering problems.

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About the Author

Ticara Gailliard is a college graduate with a degree in communications/film and video production from the University of Memphis. She has been a writer for over 15 years and has been published in local writing magazines such as "Grandmother Earth." She also edited two books for her high school.