Скачать или смотреть Plant ID: Oleander (Nerium oleander)

Genus: Nerium
Species: oleander
Family: APOCYNACEAE
Common name: Oleander
Plant type: Evergreen
Origin: Middle East and Mediterranean

Habit:

A popular, great looking, feisty, large shrub, 4m height x 4m width. Oleander is going to produce numerous stems which make it fairly easy to train/prune into a desired form. Can develop a small tree size and habit, extending beyond 4m height.

Generally going to produce a shrub-like broad dome, hemispherical, with numerous upright stems mainly emerging from the base, growing from a densely pack area at ground-level or close to ground-level. Can eventually develop some girth to stem diameters, many stems remain long and thin, flexible. Stems do branch. Can develop a centralized or primary trunk, fusing and merging of many stems and older wood to form a short, rounded – irregular primary trunk. Young stems will be green aging to a thin layer of grey bark, smooth – finely grained, can have bumps, scars, splits and cracking.

Can produce flowers for an extended period, from spring, throughout summer and into early winter.

Oleander can be hardy, vigorous; has been pruned hard and still comes back strong with a whole bunch of new shoots. Handles most soil types, dry, sandy; moderate drought and frost tolerant, saline tolerant, salty winds; fire retardant. Does well in full sun, some shade, well drained soil, but can suffer in wet soils.

All parts of this plant have been described as poisonous, causing human reactions usually by coming into contact with the plant or ingesting some part of the plant. Produces white sap which can be highly irritating. There are people who seem to have little to no adverse reactions from being around the plant or making contact with the plant.


Foliage:

Mostly a whorl of 3 leaves, can develop thick and strong, can have a stiff and shiny surface. The leaves are green – dark green, simple, narrow lanceolate, up to 200mm length x 20mm – 40mm width with a petiole 10mm in length. Concolorous, paler underneath; apex acute; margin entire; prominent pale-cream midrib.


Flowers:

A cyme arranged inflorescence with clusters of single or double flowers, funnel form – salverform, growing at the ends of branches on the new season’s growth. Some main flower colours are pink, crimson, pale yellow and white. Flowers have 5 broad, obovate lobes 20mm width, crimped and wavy on outer edges. Interior, beyond the lobes are petal-like appendages with laciniate ends. There are multiple stamens terminating in a spiral of woolly anthers enclosing the central style.

In temperate – subtropical climates can flower from spring/late spring, summer and late autumn/early winter.


Fruit:

Slender follicle, 120mm – 150mm length x 10mm – 15mm width, green ripening to brown, usually in pairs with numerous, slender, brown hairy seeds. Follicles split open in autumn.


The following author's photographs are credited:

(Open fruit of Oleander showing seeds)

Fruto abierto de adelfa (Nerium oleander) mostrando las semillas. Madrid. 2007-02-27 Fotografía: Luis Fernández García

Licensed under: CC BY-SA 2.5 ES
https://creativecommons.org/licenses/...