North America Native Plant

Globefruit Primrose-willow

Botanical name: Ludwigia sphaerocarpa

USDA symbol: LUSP

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Ludwigia sphaerocarpa Elliott var. deamii Fernald & Grisc. (LUSPD)  âš˜  Ludwigia sphaerocarpa Elliott var. jungens Fernald & Grisc. (LUSPJ)  âš˜  Ludwigia sphaerocarpa Elliott var. macrocarpa Fernald & Grisc. (LUSPM2)   

Globefruit Primrose-Willow: A Hidden Gem for Wet Gardens If you’ve been struggling to find the perfect native plant for that perpetually soggy spot in your yard, meet your new best friend: globefruit primrose-willow (Ludwigia sphaerocarpa). This unassuming little perennial might not win any flashy flower contests, but it’s exactly what ...

Globefruit Primrose-Willow: A Hidden Gem for Wet Gardens

If you’ve been struggling to find the perfect native plant for that perpetually soggy spot in your yard, meet your new best friend: globefruit primrose-willow (Ludwigia sphaerocarpa). This unassuming little perennial might not win any flashy flower contests, but it’s exactly what your wetland garden has been waiting for.

What Makes Globefruit Primrose-Willow Special?

Don’t let the name fool you – this isn’t actually related to primroses or willows. Globefruit primrose-willow is a native forb that’s perfectly adapted to life in wet places. As a true American native, it naturally occurs across 20 states, primarily in the eastern United States from Maine down to Florida and as far west as Texas and Illinois.

This herbaceous perennial gets its charming name from its distinctive round seed capsules that look like tiny green globes. The small, bright yellow flowers with four delicate petals appear throughout the growing season, creating subtle pops of color against the lance-shaped green foliage.

Why Your Garden Needs This Wetland Wonder

Here’s where globefruit primrose-willow really shines – it’s what botanists call an obligate wetland plant. This means it almost exclusively thrives in wet conditions that would make most garden plants throw in the towel. If you have:

  • A rain garden that stays soggy after storms
  • Pond or stream edges that need naturalistic plantings
  • Low-lying areas that flood seasonally
  • Boggy spots where other plants struggle

Then this little champion could be your solution. It’s perfect for native plant gardens, wetland restoration projects, and anywhere you want to support local ecosystems while solving drainage challenges.

Garden Design and Landscape Role

Globefruit primrose-willow works beautifully as part of a naturalized wetland planting. Its compact, herbaceous growth habit makes it an excellent choice for the foreground of bog gardens or as a groundcover around pond edges. The plant creates a lovely textural contrast when paired with taller wetland grasses and sedges.

While it won’t be the star of your flower border, its subtle beauty and ecological value make it invaluable for gardeners focused on native plant communities and wildlife habitat creation.

Pollinator and Wildlife Benefits

Those cheerful yellow blooms aren’t just pretty – they’re working hard to support local pollinators. Small native bees and other beneficial insects visit the flowers, while the seeds provide food for wetland birds. By planting globefruit primrose-willow, you’re creating a little oasis for wildlife that depends on native wetland plants.

Growing Conditions and Care

The beauty of growing globefruit primrose-willow lies in its simplicity – if you can provide wet conditions, you’re halfway there. Here’s what this wetland lover needs:

  • Sunlight: Full sun to partial shade (at least 4-6 hours of direct sunlight)
  • Soil: Consistently moist to wet soils; tolerates clay and periodic flooding
  • Water: Constant moisture is essential – this plant does not tolerate drought
  • USDA Zones: Hardy in zones 5-9

Planting and Care Tips

Getting started with globefruit primrose-willow is refreshingly straightforward:

  • When to plant: Spring is ideal, after the last frost date
  • Site preparation: Choose the wettest spot in your garden – seriously!
  • Spacing: Plant 12-18 inches apart for natural coverage
  • Maintenance: Virtually none once established, just ensure consistent moisture
  • Winter care: This perennial dies back in winter and returns in spring

The most important thing to remember? Never let this plant dry out. If you’re the type of gardener who forgets to water, this might not be your match – unless you plant it somewhere naturally wet.

Is Globefruit Primrose-Willow Right for Your Garden?

This native gem is perfect for gardeners who:

  • Have consistently wet or boggy areas to plant
  • Want to support native ecosystems and wildlife
  • Appreciate subtle, naturalistic beauty over flashy displays
  • Are working on wetland restoration or rain garden projects

However, if you have dry, well-draining soil or prefer drought-tolerant plants, you’ll want to look elsewhere. Globefruit primrose-willow is a specialist, and wet feet are non-negotiable.

For gardeners blessed with naturally wet areas or those creating rain gardens and bog plantings, globefruit primrose-willow offers the perfect combination of native authenticity, ecological value, and low-maintenance beauty. Sometimes the most unassuming plants turn out to be exactly what our gardens – and local wildlife – need most.

Wetland Status

The rule of seasoned gardeners and landscapers is to choose the "right plant for the right place" matching plants to their ideal growing conditions, so they'll thrive with less work and fewer inputs. But the simplicity of this catchphrase conceals how tricky plant selection is. While tags list watering requirements, there's more to the story.

Knowing a plant's wetland status can simplify the process by revealing the interaction between plants, water, and soil. Surprisingly, many popular landscape plants are wetland species! And what may be a wetland plant in one area, in another it might thrive in drier conditions. Also, it helps you make smarter gardening choices and grow healthy plants with less care and feeding, saving you time, frustration, and money while producing an attractive garden with greater ecological benefits.

Regions
Status
Moisture Conditions

Atlantic and Gulf Coastal Plain

OBL

Obligate Wetland - Plants with this status almost always occurs in wetlands

Eastern Mountains and Piedmont

OBL

Obligate Wetland - Plants with this status almost always occurs in wetlands

Great Plains

OBL

Obligate Wetland - Plants with this status almost always occurs in wetlands

Midwest

OBL

Obligate Wetland - Plants with this status almost always occurs in wetlands

Northcentral & Northeast

OBL

Obligate Wetland - Plants with this status almost always occurs in wetlands

Globefruit Primrose-willow

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Myrtales

Family

Onagraceae Juss. - Evening Primrose family

Genus

Ludwigia L. - primrose-willow

Species

Ludwigia sphaerocarpa Elliott - globefruit primrose-willow

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