Non-native Plants

Waxgourd

Benincasa hispida

USDA symbol: BEHI3

annual vine

Hawaii: non-native, naturalized
Pacific Basin excluding Hawaii: non-native, naturalized

If you’ve ever wondered what it would be like to grow your own watermelon-sized gourd that looks like it’s been dipped in wax, meet the waxgourd (Benincasa hispida). This fascinating annual vine produces some of the most impressive fruits you’ll ever see in a home garden – we’re talking about ...

Waxgourd: The Giant Climbing Gourd That’s Taking Gardens by Storm

If you’ve ever wondered what it would be like to grow your own watermelon-sized gourd that looks like it’s been dipped in wax, meet the waxgourd (Benincasa hispida). This fascinating annual vine produces some of the most impressive fruits you’ll ever see in a home garden – we’re talking about gourds that can tip the scales at 80 pounds or more!

What Exactly Is Waxgourd?

Waxgourd is a vigorous annual climbing plant that belongs to the same family as cucumbers, melons, and squash. True to its name, the mature fruits develop a distinctive waxy, white coating that gives them an almost ethereal appearance. The plant itself is quite the sight too, with broad, fuzzy leaves and cheerful yellow flowers that attract plenty of pollinators to your garden.

You might also see this plant listed under its synonym, Benincasa cerifera, but don’t let the scientific names confuse you – it’s the same remarkable plant either way.

Where Does Waxgourd Come From?

Originally hailing from South and Southeast Asia, particularly India and China, waxgourd is not native to North American gardens. However, it has established itself in some U.S. territories, including Hawaii, Guam, and Palau, where it grows as an introduced species that can reproduce on its own in the wild.

  • Species observed
  • No observations

While waxgourd can be a fascinating addition to your garden, consider exploring native alternatives like wild cucumber (Echinocystis lobata) or bur cucumber (Sicyos angulatus) if you’re looking to support local ecosystems with climbing vines.

Why Grow Waxgourd in Your Garden?

There are several compelling reasons why gardeners are drawn to this unusual plant:

  • Impressive size: Few things in the garden are as conversation-starting as a gourd the size of a small watermelon hanging from your trellis
  • Edible and versatile: Young fruits can be eaten like summer squash, while mature ones store for months
  • Pollinator magnet: The bright yellow flowers are beloved by bees and other beneficial insects
  • Natural beauty: The waxy white coating on mature fruits creates a stunning visual display
  • Space-efficient: Despite producing large fruits, the vine grows vertically, making good use of garden space

Garden Design and Landscape Role

Waxgourd works best in vegetable gardens and edible landscapes where its climbing nature can be properly supported. This isn’t a plant for small spaces – you’ll need a robust trellis, arbor, or fence that can handle both the weight of the vine and its substantial fruits. Some gardeners use it to create natural privacy screens or to cover unsightly structures, though you’ll need to ensure whatever you’re covering can handle the load.

The plant can reach impressive heights and spreads, so give it plenty of room to roam – think 6-8 feet in each direction when fully mature.

Growing Conditions and Care

Waxgourd thrives in warm conditions and is best suited for USDA hardiness zones 9-11, though gardeners in cooler areas can grow it as a summer annual with a long, warm growing season.

What Waxgourd Needs to Thrive:

  • Sunlight: Full sun (6-8 hours daily)
  • Soil: Rich, well-draining soil with plenty of organic matter
  • Water: Consistent moisture throughout the growing season
  • Temperature: Warm conditions; plant after all danger of frost has passed
  • Support: Strong, sturdy trellis or support system

Planting and Care Tips

Growing waxgourd successfully requires patience and preparation, but the results are worth the effort:

  • Start from seed: Direct sow seeds in warm soil after the last frost date, or start indoors 2-3 weeks earlier
  • Prepare your support system first: Install sturdy trellises before planting – trust us on this one!
  • Space generously: Give each plant 4-6 feet of space
  • Water consistently: Keep soil evenly moist but not waterlogged
  • Feed regularly: Apply compost or balanced fertilizer every few weeks during the growing season
  • Be patient: It takes 4-5 months from planting to harvest mature fruits

Is Waxgourd Right for Your Garden?

Waxgourd can be a rewarding addition to the right garden, but it’s not for everyone. Consider this plant if you have:

  • A long, warm growing season
  • Plenty of vertical space and strong support structures
  • Interest in unique edible plants
  • Patience for a slow-growing but impressive payoff

However, you might want to skip waxgourd if you’re working with limited space, prefer low-maintenance plants, or are focused on supporting native wildlife with indigenous plant choices.

Whether you choose to grow this impressive gourd or opt for native alternatives, the key is selecting plants that match both your garden conditions and your gardening goals. Happy growing!

Benincasa hispida is also known as...

Often we refer to plants by their common names. When shopping for plants the scientific name is the best way to positively identify the plant species you desire. But some plants have more than one name! While it doesn't happen often, nurseries might display one name while you're searching for another. Benincasa hispida is also known as:

Benincasa cerifera | USDA symbol: BECE

Why do some plants have more than one name? Over time plant species may be renamed for a few reasons:

  1. Botanists in different regions named the same plant without knowing it had already been classified.
  2. A species was reclassified after scientific advances in, for example, DNA analysis.
  3. Slight variations within a species are sometimes mistakenly identified as entirely new species.

Classification

Group: Dicot
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Magnoliopsida - Dicotyledons
Subclass: Dilleniidae
Order: Violales
Family: Cucurbitaceae Juss. - Cucumber family
Genus: Benincasa Savi - benincasa

Species: Benincasa hispida (Thunb.) Cogn. - waxgourd

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA