Watermelon

Citrullus lanatus, Cucurbitaceae

Zones

4a–11b

Layer

Vine

Lifespan

Annual

Growth

Fast

Guild Roles

Producer

Growing Conditions

Sun

Full Sun (optimal)

Water

High

Soil pH

6 – 7

Tolerances

Drought

Frost

Heat

Pest Resistance

Disease Resist.

Companion Plants

Winged BeanPsophocarpus tetragonolobus

Nitrogen Fixation

Hyacinth BeanLablab purpureus

Nitrogen Fixation

LemongrassCymbopogon citratus

Pest Deterrent

YaconSmallanthus sonchifolius

Shade Provision

Hamburg ParsleyPetroselinum crispum var. tuberosum

Beneficial Insect HabitatPollinator Sharing

ScorzoneraScorzonera hispanica

Beneficial Insect HabitatNutrient Accumulation

UllucoUllucus tuberosus

Pest Deterrent

Antagonistic Plants

Calabash GourdLagenaria siceraria

Related cucurbits may compete for resources and space

CucumberCucumis sativus

Both cucurbits compete for similar nutrients and may exhibit cross-allelopathy

CantaloupeCucumis melo var. cantalupensis

Watermelon and cantaloupe are both heavy feeders that compete intensely for nutrients and space, with allelopathic compounds affecting nearby melons

Honeydew MelonCucumis melo var. inodorus

Honeydew melons and watermelons are both heavy-feeding cucurbits that compete for nutrients and produce compounds inhibiting each other

Uses

Functions

Food

Edible Parts

FruitSeeds

Common Questions

What zones does Watermelon grow in?

Watermelon grows in USDA hardiness zones 4a through 11b.

What are good companion plants for Watermelon?

Good companions for Watermelon include Winged Bean, Hyacinth Bean, Lemongrass, Yacon, Hamburg Parsley.

Design guilds with Watermelon and see companion relationships visually.

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