Port Royal Senna

Senna italica, Fabaceae

Zones

9–12

Layer

Shrub

Lifespan

Perennial

Growth

Fast

Guild Roles

ProducerNitrogen FixerDynamic Accumulator

Growing Conditions

Sun

Full Sun (preferred)Partial Shade (tolerated)

Water

Low (established)Moderate (seedling)

Soil pH

6 – 8.5

Tolerances

Drought

Frost

Heat

Pest Resistance

Disease Resist.

Companion Plants

Salam AcaciaAcacia ehrenbergiana

Nitrogen FixationPollinator Sharing

Umbrella Thorn AcaciaAcacia raddiana

Nitrogen FixationBeneficial Insect Habitat

Shrubby Bean CaperZygophyllum dumosum

Nitrogen FixationPest Deterrent

Camphor DaisyHeterotheca subaxillaris

Pollinator SharingBeneficial Insect Habitat

Antagonistic Plants

Desert CassiaSenna polyphylla

Closely related senna species compete for resources and may exhibit allelopathic effects

Uses

Functions

Soil ImprovementLivestock FodderErosion Control

Edible Parts

LeavesSeeds

Medicinal Uses

Digestive DisordersSkin ConditionsTraditional Laxative

Common Questions

What zones does Port Royal Senna grow in?

Port Royal Senna grows in USDA hardiness zones 9 through 12.

Is Port Royal Senna a nitrogen fixer?

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

What are good companion plants for Port Royal Senna?

Good companions for Port Royal Senna include Salam Acacia, Umbrella Thorn Acacia, Shrubby Bean Caper, Camphor Daisy.

Design guilds with Port Royal Senna and see companion relationships visually.

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