North America Native Plant

Lady’s Nightcap

Botanical name: Bonamia

USDA symbol: BONAM

Life cycle: perennial

Habit: vine

Native status: Native to Hawaii âš˜ Native to the lower 48 states  

Lady’s Nightcap: A Charming Native Climber for Your Garden If you’re looking to add a touch of delicate charm to your native plant garden, meet lady’s nightcap (Bonamia) – a lovely perennial vine that’s as graceful as its whimsical name suggests. This native climbing beauty offers gardeners a wonderful way ...

Lady’s Nightcap: A Charming Native Climber for Your Garden

If you’re looking to add a touch of delicate charm to your native plant garden, meet lady’s nightcap (Bonamia) – a lovely perennial vine that’s as graceful as its whimsical name suggests. This native climbing beauty offers gardeners a wonderful way to incorporate indigenous flora while creating vertical interest in their landscapes.

What is Lady’s Nightcap?

Lady’s nightcap is a perennial twining and climbing plant that can develop either woody or herbaceous stems depending on growing conditions. As a member of the morning glory family, it shares that characteristic of gracefully winding its way up supports, but with its own unique personality and growing habits.

Where Does Lady’s Nightcap Call Home?

This charming native has quite the range across the United States. You’ll find lady’s nightcap naturally growing in Florida, Texas, and Hawaii, making it a true American native with both mainland and island populations. Its presence in both the lower 48 states and Hawaii makes it a versatile choice for gardeners in warm climate zones.

Why Choose Lady’s Nightcap for Your Garden?

There are several compelling reasons to consider adding this native climber to your landscape:

  • Native plant benefits: Supporting local ecosystems and wildlife
  • Low maintenance: Once established, native plants typically require less water and care
  • Pollinator friendly: Provides nectar and habitat for local pollinators
  • Vertical interest: Perfect for adding height and dimension to garden spaces
  • Adaptable growth: Can develop woody or herbaceous stems based on conditions

Perfect Garden Settings

Lady’s nightcap shines in several garden styles and situations:

  • Native plant gardens and naturalized areas
  • Wildlife gardens focused on supporting local fauna
  • Informal cottage-style landscapes
  • Areas where you want climbing or ground-covering plants
  • Pollinator gardens and butterfly habitats

Growing Conditions and Care

Lady’s nightcap is well-suited to warm climate gardening, thriving in USDA hardiness zones 9-11. This makes it perfect for gardeners in the southern United States, Hawaii, and similar warm regions.

Ideal growing conditions include:

  • Sunlight: Full sun to partial shade
  • Soil: Well-draining soil (avoid waterlogged conditions)
  • Water: Moderate water needs once established
  • Support: Provide trellises, fences, or other plants for climbing

Planting and Care Tips

Getting lady’s nightcap established in your garden is relatively straightforward:

  • Plant in spring after the last frost date
  • Choose a location with good drainage to prevent root rot
  • Provide initial support structures for the twining stems
  • Water regularly during the first growing season to help establish roots
  • Once established, this native typically requires minimal supplemental watering
  • Prune as needed to control growth and maintain desired shape

Supporting Wildlife

As a native plant, lady’s nightcap plays an important role in supporting local ecosystems. The flowers attract various pollinators, including small bees and other beneficial insects. By choosing native plants like lady’s nightcap, you’re creating habitat and food sources that local wildlife has evolved alongside for thousands of years.

The Bottom Line

Lady’s nightcap offers gardeners in warm climates a wonderful opportunity to grow a true native plant that’s both beautiful and beneficial. Its climbing habit makes it perfect for adding vertical interest, while its native status means you’re supporting local wildlife and ecosystems. For gardeners in zones 9-11 looking to incorporate more indigenous plants into their landscapes, lady’s nightcap deserves serious consideration.

Remember, when purchasing plants, try to source from reputable native plant nurseries to ensure you’re getting true native specimens that will thrive in your local conditions.

Lady’s Nightcap

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Solanales

Family

Convolvulaceae Juss. - Morning-glory family

Genus

Bonamia Thouars - lady's nightcap

Species

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