Purple Yam

Dioscorea alata, Dioscoreaceae

Zones

9a–11b

Layer

Vine

Lifespan

Perennial

Growth

Moderate

Guild Roles

Producer

Growing Conditions

Sun

Full Sun (optimal)

Water

High

Soil pH

5.5 – 7

Tolerances

Drought

Frost

Heat

Pest Resistance

Disease Resist.

Companion Plants

Egyptian BeanDolichos lablab

Nitrogen Fixation

Red Malabar SpinachBasella rubra

Nutrient Accumulation

VanillaVanilla planifolia

Physical SupportShade Provision

MashuaTropaeolum tuberosum

Pest DeterrentWind Protection

Antagonistic Plants

Air PotatoDioscorea bulbifera

Both yam species compete intensely for the same soil nutrients and rooting space, reducing tuber production

AhipaPachyrhizus tuberosus

Both tuberous crops compete for deep soil nutrients and underground growing space

Uses

Functions

Food

Edible Parts

Roots

Common Questions

What zones does Purple Yam grow in?

Purple Yam grows in USDA hardiness zones 9a through 11b.

What are good companion plants for Purple Yam?

Good companions for Purple Yam include Egyptian Bean, Red Malabar Spinach, Vanilla, Mashua.

Design guilds with Purple Yam and see companion relationships visually.

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