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Nerium oleander, photographed by an iNaturalist contributor
(c) Cheng-wei, Liu (Jack), some rights reserved (CC BY-NC), uploaded by Cheng-wei, Liu (Jack) · CC BY-NC
#310 most planted

Nerium oleander

Oleander · also Rosebay

BroadleafEvergreen
3,903
trees mapped
0.04%
of all named trees
8
cities
7.5 in
median trunk (19 cm, 3,746 measured)
35 yr
median age (71% have a planting date)

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Nerium oleander is a hardy evergreen shrub or small tree, known for its dense growth and prolific, colorful flowers that bloom year-round. All parts of the plant are highly poisonous, and its sap can irritate skin. It tolerates heat, drought, and salt, making it suitable for coastal and urban environments.

Where it grows

Trees in each city's inventory, with the share of that city's named trees this species accounts for.

  1. Los Angeles · United States
    2,77135 yr7.5 in
  2. Buenos Aires · Argentina
    856—10 in
  3. Melbourne · Australia
    197—1.9 in
  4. San Francisco · United States
    30—7.5 in
  5. Tokyo · Japan
    24—3.8 in
  6. Taipei · Taiwan
    14—1.8 in
  7. Paris · France
    9——
  8. Tempe · United States
    2—9.0 in

Traits

Form
Broadleaf
Foliage
Evergreen
Mature height
7–20 ft
Canopy spread
10–15 ft
Growth rate
Fast
Sun
Full sun, Part shade
Water needs
Low
Drought tolerance
High
Wildlife value
Low
Tolerates
coastal, salt
Blooms
Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec

Trunk diameters across every city: median 7.5 in, mean 7.1 in, 90th percentile 15 in. Measured at breast height, as published by each inventory.

Native range

Terrestrial ecoregions where this species is native. Trees in the dataset mostly stand well outside it.

Tropical & Subtropical Dry Broadleaf Forests

  • East Deccan dry-evergreen forests

Mediterranean Forests, Woodlands & Scrub

  • Aegean and Western Turkey sclerophyllous and mixed forests

Deserts & Xeric Shrublands

  • Arabian-Persian Gulf coastal plain desert

Interested in talking trees? arborary.world@gmail.comTree data © the respective municipal publishers and © OpenStreetMap contributors (ODbL).