North America Native Plant

San Francisco Woodland-star

Botanical name: Lithophragma affine affine

USDA symbol: LIAFA

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

San Francisco Woodland-Star: A Delicate Native Gem for Pacific Coast Gardens If you’re looking for a charming native wildflower to add subtle beauty to your shaded garden spaces, San Francisco woodland-star (Lithophragma affine affine) might just be the perfect choice. This delicate perennial brings a touch of Pacific Coast wilderness ...

San Francisco Woodland-Star: A Delicate Native Gem for Pacific Coast Gardens

If you’re looking for a charming native wildflower to add subtle beauty to your shaded garden spaces, San Francisco woodland-star (Lithophragma affine affine) might just be the perfect choice. This delicate perennial brings a touch of Pacific Coast wilderness right to your backyard, though it’s definitely what we’d call a gardener’s plant – one that rewards those who appreciate understated elegance over flashy blooms.

What Makes San Francisco Woodland-Star Special?

San Francisco woodland-star is a native perennial forb, meaning it’s an herbaceous plant that lacks woody stems and dies back to ground level each winter, only to emerge again with fresh growth in spring. As a true California and Oregon native, this plant has evolved specifically to thrive in Pacific Coast conditions, making it an excellent choice for gardeners seeking authentic regional character in their landscapes.

This lovely little plant produces small, white flowers with distinctively fringed petals that give it an almost lacy appearance. The delicate blooms seem to float above the foliage, creating an ethereal effect that’s particularly striking in woodland settings or shaded rock gardens.

Where Does It Naturally Grow?

San Francisco woodland-star calls California and Oregon home, thriving in the unique Mediterranean and temperate coastal climates of these states. Its natural habitat includes woodland understories and rocky areas where it can find the dappled light and well-draining conditions it prefers.

Why Choose San Francisco Woodland-Star for Your Garden?

There are several compelling reasons to consider this native beauty for your landscape:

  • Native authenticity: As a true regional native, it supports local ecosystems and provides habitat for native wildlife
  • Low maintenance: Once established, native plants typically require less water and care than non-native alternatives
  • Unique beauty: The fringed white flowers offer a distinctive look that’s different from common garden varieties
  • Woodland charm: Perfect for creating naturalistic garden areas that mimic Pacific Coast forests
  • Rock garden appeal: Its compact size and delicate appearance make it ideal for rock gardens and alpine-style plantings

Garden Design Ideas

San Francisco woodland-star shines brightest when used in garden designs that celebrate its natural woodland heritage. Consider incorporating it into:

  • Native plant gardens: Pair it with other California and Oregon natives for an authentic regional landscape
  • Woodland gardens: Use it as groundcover or accent planting under trees and large shrubs
  • Shade gardens: Its tolerance for low light makes it valuable in areas where sun-loving plants struggle
  • Rock gardens: The delicate flowers create beautiful contrast against stone and gravel

Growing Conditions and Care

Like many woodland natives, San Francisco woodland-star appreciates conditions that mimic its natural habitat. Here’s what you need to know:

  • Light: Prefers shade to partial shade – think dappled sunlight rather than full sun
  • Soil: Well-draining soil is essential; it won’t tolerate soggy conditions
  • Water: Once established, it should be quite drought-tolerant, following typical Mediterranean climate patterns
  • Climate: Best suited for USDA hardiness zones 7-9, matching its native Pacific Coast range

A Word of Caution for Gardeners

Here’s where we need to be honest with you: San Francisco woodland-star isn’t the easiest plant to find in nurseries, and detailed growing information can be scarce. This subspecies appears to be somewhat specialized in its requirements and may not be widely cultivated. If you’re set on growing Lithophragma species, you might have better luck finding the more common Lithophragma parviflorum (smallflower woodland-star) or consulting with native plant societies in California and Oregon.

The Bottom Line

San Francisco woodland-star represents the kind of plant that dedicated native gardeners dream about – authentic, beautiful, and perfectly adapted to local conditions. While it may require some detective work to source and grow successfully, the reward is a truly special addition to Pacific Coast gardens. If you can find it and provide the right woodland conditions, you’ll have a unique native treasure that connects your garden to the natural heritage of California and Oregon.

For gardeners in other regions, consider exploring your own local woodland-star species or similar native woodland wildflowers that will give you that same delicate, naturalistic beauty while supporting your local ecosystem.

San Francisco Woodland-star

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

Rosales

Family

Saxifragaceae Juss. - Saxifrage family

Genus

Lithophragma (Nutt.) Torr. & A. Gray - woodland-star

Species

Lithophragma affine A. Gray - San Francisco woodland-star

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