North America Native Plant

Purple Spiderling

Botanical name: Boerhavia purpurascens

USDA symbol: BOPU

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Purple Spiderling: A Delicate Desert Native for Water-Wise Gardens If you’re looking to add a touch of understated elegance to your desert garden or xeriscape, purple spiderling (Boerhavia purpurascens) might just be the perfect addition. This charming little annual brings delicate beauty to harsh landscapes while requiring virtually no maintenance ...

Purple Spiderling: A Delicate Desert Native for Water-Wise Gardens

If you’re looking to add a touch of understated elegance to your desert garden or xeriscape, purple spiderling (Boerhavia purpurascens) might just be the perfect addition. This charming little annual brings delicate beauty to harsh landscapes while requiring virtually no maintenance once established.

What Makes Purple Spiderling Special?

Purple spiderling is a true native of the American Southwest, naturally occurring across Arizona, New Mexico, and Texas. As an annual plant, it completes its entire life cycle in one growing season, but don’t let that fool you into thinking it’s not worth planting. This hardy desert dweller has mastered the art of thriving where other plants struggle.

The plant gets its common name from its delicate, spider-like appearance and the subtle purple-pink hue of its small flowers. While the blooms may not be showstoppers from a distance, they reveal their intricate beauty when viewed up close, making them perfect for intimate garden spaces or naturalistic plantings.

Why Choose Purple Spiderling for Your Garden?

There are several compelling reasons to consider adding purple spiderling to your landscape:

  • Water-wise gardening: Once established, this drought-tolerant native requires minimal irrigation, making it perfect for water-conscious gardeners
  • Low maintenance: Purple spiderling thrives on neglect and doesn’t need fertilizers or frequent care
  • Pollinator support: The small flowers attract beneficial insects, including native bees and butterflies
  • Self-seeding: This annual readily self-seeds, ensuring new plants will appear year after year without your intervention
  • Native plant benefits: Supporting local ecosystems while reducing the need for intensive garden maintenance

Where Does Purple Spiderling Fit in Your Landscape?

Purple spiderling works beautifully as a ground cover or filler plant in desert gardens and xeriscapes. Its delicate texture provides a nice contrast to more architectural desert plants like agaves or cacti. Consider using it in:

  • Naturalistic wildflower areas
  • Rock gardens
  • Desert-themed landscapes
  • Water-wise garden borders
  • Areas where you want low-growing, textural interest

Growing Purple Spiderling Successfully

The beauty of purple spiderling lies in its simplicity. This adaptable native is surprisingly easy to grow when you understand its preferences:

Climate Requirements: Purple spiderling thrives in USDA hardiness zones 8-10, making it suitable for most of the southwestern United States and other warm, arid regions.

Sun and Soil: Give this plant full sun exposure and well-draining soil. It actually prefers sandy or rocky soils and tolerates alkaline conditions that would challenge many other plants. Heavy, clay soils or areas with poor drainage should be avoided.

Watering: While purple spiderling appreciates some water during germination and establishment, mature plants are remarkably drought tolerant. Overwatering can actually harm this desert native, so err on the side of less rather than more.

Planting and Care Tips

Getting started with purple spiderling is straightforward:

  • Timing: Direct seed in spring after the last frost date in your area
  • Planting: Scatter seeds directly in the desired location and lightly rake into the soil surface
  • Germination: Provide light, consistent moisture until seeds germinate
  • Maintenance: Once established, little to no care is needed beyond occasional observation
  • Self-seeding: Allow some plants to go to seed for natural reseeding the following year

Is Purple Spiderling Right for Your Garden?

Purple spiderling is an excellent choice for gardeners who appreciate native plants, want to reduce water usage, and enjoy low-maintenance gardening. It’s particularly well-suited for those creating authentic desert landscapes or naturalistic gardens in the Southwest.

However, if you’re looking for bold, showy flowers or plants that thrive in humid, water-rich environments, purple spiderling might not be the best fit. This is definitely a plant for those who appreciate subtle beauty and want to work with nature rather than against it.

By choosing purple spiderling, you’re not just adding a charming plant to your garden – you’re supporting native ecosystems, conserving water, and creating habitat for local wildlife. Sometimes the most beautiful gardens are those that embrace the natural character of their region, and purple spiderling does exactly that.

Purple Spiderling

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Caryophyllidae

Order

Caryophyllales

Family

Nyctaginaceae Juss. - Four o'clock family

Genus

Boerhavia L. - spiderling

Species

Boerhavia purpurascens A. Gray - purple spiderling

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