Alexandrian Senna

Senna alexandrina, Fabaceae

Zones

9–12

Layer

Shrub

Lifespan

Perennial

Growth

Moderate

Guild Roles

Nitrogen FixerProducerBeneficial Insect Habitat

Growing Conditions

Sun

Full Sun (preferred)

Water

Low (established)Moderate (seedling)

Soil pH

7 – 8.5

Tolerances

Drought

Frost

Heat

Pest Resistance

Disease Resist.

Companion Plants

Weeping MyallAcacia pendula

Nitrogen FixationBeneficial Insect Habitat

Abyssinian JujubeZiziphus abyssinica

Nitrogen FixationPest Deterrent

Woolly CaperCapparis tomentosa

Nitrogen FixationPest Deterrent

Sweet AcaciaAcacia farnesiana

Nitrogen FixationBeneficial Insect Habitat

Syrian Bean-caperZygophyllum fabago

Pollinator SharingPest Deterrent

Russian Desert-thornLycium ruthenicum

Pest DeterrentBeneficial Insect Habitat

Antagonistic Plants

Golden Shower TreeCassia fistula

Related Cassia species may have allelopathic interactions and compete for similar resources

Silver CassiaSenna artemisioides

Related Senna species may exhibit allelopathic effects and compete for similar resources

Flexible MesquiteProsopis flexuosa

Senna produces anthraquinones that can inhibit other legume species

Simple Bean CaperTetraena simplex

Senna compounds may deter herbivores from nearby desert plants while both tolerate alkaline soils

Uses

Functions

Medicinal ProductionNitrogen FixationErosion ControlWildlife Habitat

Medicinal Uses

LaxativeDigestive DisordersDetoxificationPurgative

Common Questions

What zones does Alexandrian Senna grow in?

Alexandrian Senna grows in USDA hardiness zones 9 through 12.

Is Alexandrian Senna a nitrogen fixer?

Yes, Alexandrian Senna is a nitrogen fixer and can help provide nitrogen to neighboring plants in a guild or polyculture.

What are good companion plants for Alexandrian Senna?

Good companions for Alexandrian Senna include Weeping Myall, Abyssinian Jujube, Woolly Caper, Sweet Acacia, Syrian Bean-caper.

Design guilds with Alexandrian Senna and see companion relationships visually.

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