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NERIUM oleander 'Sister Agnes'

Image of Nerium oleander 'Sister Agnes' ('Soeur Agnes')

Carol Cloud Bailey

Family

Apocynaceae

Botanical Name

NERIUM oleander 'Sister Agnes' ('('Soeur Agnes')')

Plant Common Name

Oleander, Sister Agnes Oleander

General Description

Oleander is a Mediterranean shrub that thrives where summers are dry and hot. It is a large, vase-shaped evergreen with leathery lance-shaped leaves and colorful flowers, which appear all year—most heavily from late winter to early summer. The showy, single, white flowers have a pale yellow to green funnel-shaped base from which flare five prominent radial petals. Blooms are carried in loose clusters at the ends of the branches. The cultivar ‘Sister Agnes’ is a large, vigorous plant and is more cold tolerant than other oleanders.

Plant these tough shrubs in full sun and well draining soil. Oleanders are very drought tolerant but appreciate moist soil and develop a better floral display, as well as overall form, if given good growing conditions. Often grown as a hedge, frequent shearing reduces flower production, so prune by hand to retain a healthy, natural shape. This is an excellent plant for difficult areas. It may be used as a container plant, large shrub, in mixed plantings or for screening.

There are potential health concerns with this plant. For more information about the toxicity of oleander see http://www.ces.ncsu.edu/depts/hort/consumer/poison/Neriuol.htm.

Characteristics

  • AHS Heat Zone

    12 - 1

  • USDA Hardiness Zone

    8 - 15

  • Sunset Zone

    H1, H2, 8, 9, 10, 11, 12, 13, 14, 15, 16, 18, 19, 20, 21, 22, 23, 24

  • Plant Type

    Shrub

  • Sun Exposure

    Full Sun, Partial Sun

  • Height

    6'-20' / 1.8m - 6.1m

  • Width

    6'-15' / 1.8m - 4.6m

  • Bloom Time

    Early Spring, Spring, Late Spring, Early Summer, Summer, Late Summer, Early Fall, Late Winter

  • Native To

    Mediterranean

Growing Conditions

  • Soil pH

    Acidic, Neutral, Alkaline

  • Soil Drainage

    Well Drained

  • Soil type

    Clay, Loam, Sand

  • Tolerances

    Pollution, Salt, Soil Compaction

  • Growth Rate

    Medium

  • Water Requirements

    Drought Tolerant, Average Water

  • Habit

    Upright/Erect

  • Seasonal Interest

    Summer, Fall

Ornamental Features

  • Flower Interest

    Showy

  • Flower Color

    White, Light Yellow, Light Green

  • Flower Color Modifier

    Bicolor

  • Fruit Color

    Green

  • Foliage Color (Spring)

    Dark Green

  • Foliage Color (Summer)

    Dark Green

  • Foliage Color (Fall)

    Dark Green

  • Foliage Color (Winter)

    Dark Green

  • Bark Color

    Sandy Brown, Gray

  • Fragrant Flowers

    No

  • Fragrant Fruit

    No

  • Fragrant Foliage

    No

  • Bark or Stem Fragrant

    No

  • Flower Petal Number

    Single

  • Repeat Bloomer

    Yes

  • Showy Fruit

    No

  • Edible Fruit

    No

  • Showy Foliage

    No

  • Foliage Texture

    Medium

  • Foliage Sheen

    Glossy

  • Evergreen

    Yes

  • Showy Bark

    No

Special Characteristics

  • Bark Texture

    Smooth

  • Usage

    Container, Feature Plant, Foundation, Hedges, Mixed Border, Screening / Wind Break, Tropical

  • Sharp or Has Thorns

    No

  • Invasive

    No

  • Attracts

    Hummingbirds, Butterflies

  • Self-Sowing

    No