North America Native Plant

Siskiyou Checkerbloom

Botanical name: Sidalcea malviflora patula

USDA symbol: SIMAP

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Siskiyou Checkerbloom: A Rare Gem for Pacific Northwest Gardens If you’re looking to add a touch of wild elegance to your garden while supporting local ecosystems, Siskiyou checkerbloom might just be the perfect addition to your plant wishlist. This charming perennial, scientifically known as Sidalcea malviflora patula, brings both beauty ...

Rare plant alert!

Region: Conservation status by state

Status: S5T2: Status is uncertain but is somewhere between the following rankings: Subspecies or variety is imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000) ⚘ Secure: At very low or no risk of extinction in the jurisdiction due to a very extensive range, abundant populations or occurrences, with little to no concern from declines or threats. ⚘

Siskiyou Checkerbloom: A Rare Gem for Pacific Northwest Gardens

If you’re looking to add a touch of wild elegance to your garden while supporting local ecosystems, Siskiyou checkerbloom might just be the perfect addition to your plant wishlist. This charming perennial, scientifically known as Sidalcea malviflora patula, brings both beauty and ecological value to gardens across its native range.

What Makes Siskiyou Checkerbloom Special?

Siskiyou checkerbloom is a native perennial herb that calls the Pacific Northwest home. As a member of the mallow family, this forb produces lovely pink to rose-colored flowers arranged in attractive spikes that bloom from late spring through early summer. The flowers have that classic mallow appearance – delicate, papery petals that seem almost too perfect to be real.

This plant is what botanists call a forb or herb, meaning it’s a non-woody perennial that dies back to ground level each winter, only to emerge again the following spring with renewed vigor.

Where Does It Naturally Grow?

True to its name, Siskiyou checkerbloom is native to a relatively small region spanning southwestern Oregon and northwestern California, particularly in the Siskiyou Mountains area. This limited native range makes it a special plant for gardeners in California and Oregon who want to grow something truly local to their region.

Important Conservation Note

Before you rush out to find this beauty for your garden, there’s something important you should know: Siskiyou checkerbloom has a conservation status that suggests it may be somewhat rare in its native habitat. If you decide to grow this plant, it’s crucial to source it only from reputable native plant nurseries that grow it from responsibly collected seed or legally propagated stock. Never collect plants from the wild!

Why Grow Siskiyou Checkerbloom?

There are several compelling reasons to consider this native gem:

  • Pollinator magnet: The flowers attract native bees, butterflies, and other beneficial insects
  • Low maintenance: Once established, it requires minimal care
  • Authentic native appeal: Perfect for creating genuine Pacific Northwest plant communities
  • Cottage garden charm: The soft pink flowers add a romantic touch to informal garden designs
  • Wildlife support: Provides habitat and food sources for native fauna

Garden Design Ideas

Siskiyou checkerbloom works beautifully in several garden settings:

  • Native plant gardens: Combine with other regional natives for an authentic local ecosystem
  • Wildflower meadows: Let it naturalize in informal, meadow-style plantings
  • Pollinator gardens: Include it as part of a diverse mix of flowering plants
  • Cottage gardens: Use it to soften formal edges and add natural charm

Growing Conditions and Care

The good news is that Siskiyou checkerbloom isn’t particularly fussy once you understand its preferences:

Climate: Hardy in USDA zones 7-9, making it suitable for most of its native Pacific Northwest range and similar climates.

Light: Prefers full sun to partial shade. Morning sun with some afternoon protection works well in hotter areas.

Soil: Thrives in well-draining soil. Like many native plants, it doesn’t appreciate soggy conditions, especially in winter.

Water: Moderate water needs. Once established, it’s quite drought-tolerant, though some supplemental water during dry spells will keep it looking its best.

Planting and Propagation Tips

The best way to establish Siskiyou checkerbloom is through seed, which can be direct-sown in fall. This allows for natural cold stratification over winter, leading to better germination in spring. If you’re starting with nursery plants, spring planting after the last frost works well.

Once established, don’t be surprised if your checkerbloom decides to spread a bit through self-seeding – this is part of its natural charm and helps create that wild, naturalized look that makes native gardens so appealing.

The Bottom Line

Siskiyou checkerbloom is a wonderful choice for gardeners in its native range who want to support local ecosystems while enjoying beautiful flowers. Just remember to source it responsibly due to its conservation status, and you’ll have a lovely, low-maintenance perennial that connects your garden to the wild landscapes of the Pacific Northwest.

Whether you’re creating a dedicated native plant garden or simply want to add some regional character to your landscape, this charming checkerbloom offers the perfect blend of beauty, ecological value, and authentic local appeal.

Siskiyou Checkerbloom

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Dilleniidae

Order

Malvales

Family

Malvaceae Juss. - Mallow family

Genus

Sidalcea A. Gray - checkerbloom

Species

Sidalcea malviflora (DC.) A. Gray ex Benth. - dwarf checkerbloom

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