North America Non-native Plant

Citron Zephyrlily

Botanical name: Zephyranthes citrina

USDA symbol: ZECI

Life cycle: perennial

Habit: forb

Native status: Non-native, reproduces and persists in the wild in Hawaii âš˜ Non-native, reproduces and persists in the wild in the lower 48 states âš˜ Non-native, reproduces and persists in the wild in Puerto Rico  

Citron Zephyrlily: A Cheerful Rain Lily for Warm Climate Gardens If you’ve ever wished for a flower that seems to magically appear after summer storms, the citron zephyrlily (Zephyranthes citrina) might just capture your imagination. This charming little bulb produces bright yellow blooms that pop up seemingly overnight following rainfall, ...

Citron Zephyrlily: A Cheerful Rain Lily for Warm Climate Gardens

If you’ve ever wished for a flower that seems to magically appear after summer storms, the citron zephyrlily (Zephyranthes citrina) might just capture your imagination. This charming little bulb produces bright yellow blooms that pop up seemingly overnight following rainfall, earning it the delightful nickname rain lily.

What Makes Citron Zephyrlily Special

The citron zephyrlily is a perennial forb that grows from small bulbs, creating grass-like clumps of slender foliage topped with cheerful yellow flowers. These funnel-shaped blooms typically measure 1-2 inches across and have a fresh, citrusy appearance that brightens any garden space. The flowers usually appear from late spring through fall, with the most dramatic displays occurring after periods of rain.

Native Status and Distribution

It’s important to note that citron zephyrlily is not native to the United States. Originally from South America, particularly Argentina and surrounding regions, this plant has been introduced and now reproduces naturally in several U.S. locations. Currently, you’ll find established populations in Florida, Hawaii, Mississippi, and Puerto Rico.

Growing Citron Zephyrlily Successfully

If you’re considering adding citron zephyrlily to your garden, here’s what you need to know about keeping it happy:

Climate Requirements

This warm-weather lover thrives in USDA hardiness zones 8-11, making it suitable for gardeners in the southern United States and other mild winter areas.

Ideal Growing Conditions

  • Well-draining soil (these bulbs hate wet feet!)
  • Full sun to partial shade
  • Moderate to low water needs once established
  • Tolerates drought conditions well

Planting and Care Tips

  • Plant bulbs 2-3 inches deep in well-draining soil
  • Space bulbs about 4-6 inches apart
  • Water regularly during the growing season, but allow soil to dry between waterings
  • Reduce watering in winter when plants go dormant
  • Divide bulb clusters every 3-4 years to prevent overcrowding
  • No fertilizer needed – these are low-maintenance plants

Garden Design and Landscape Uses

Citron zephyrlily works beautifully in several garden settings:

  • Rock gardens where its drought tolerance shines
  • Cottage garden borders for a naturalized look
  • Container plantings on patios and decks
  • Ground cover in sunny, well-drained areas
  • Xerophytic gardens alongside other drought-tolerant plants

Wildlife and Pollinator Benefits

The bright yellow flowers attract small pollinators, including bees and butterflies, providing nectar during their blooming period. While not as beneficial to native wildlife as indigenous plants, they do offer some pollinator support.

Should You Plant Citron Zephyrlily?

Since citron zephyrlily is non-native, consider whether native alternatives might better serve your local ecosystem. Many regions have beautiful native bulbs and wildflowers that provide superior wildlife benefits. However, if you’re drawn to this plant’s unique rain-responsive blooming habit and you garden in an appropriate climate, it can be a delightful addition when grown responsibly.

If you do choose to grow citron zephyrlily, be mindful of its ability to naturalize and spread. While not currently listed as invasive, keep an eye on its behavior in your garden and prevent it from escaping into natural areas.

The Bottom Line

Citron zephyrlily offers a touch of magic to warm climate gardens with its post-rain flowering displays and cheerful yellow blooms. While it’s not native to the United States, it can be grown successfully and responsibly by gardeners who appreciate its unique characteristics and low-maintenance nature. Just remember to research native alternatives that might provide even greater benefits to your local ecosystem!

Citron Zephyrlily

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Liliidae

Order

Liliales

Family

Liliaceae Juss. - Lily family

Genus

Zephyranthes Herb. - zephyrlily

Species

Zephyranthes citrina Baker - citron zephyrlily

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