North America Native Plant

Oregon Checkerbloom

Botanical name: Sidalcea oregana hydrophila

USDA symbol: SIORH

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Oregon Checkerbloom: A Rare California Native Worth Protecting Meet Oregon checkerbloom (Sidalcea oregana hydrophila), a native perennial that’s quietly making its mark in California’s natural landscapes. This lesser-known member of the mallow family might not be the showiest plant in the garden center, but it carries an important story about ...

Rare plant alert!

Region: Conservation status by state

Status: S5T3: Status is uncertain but is somewhere between the following rankings: Subspecies or variety is vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals. ⚘ 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. ⚘

Oregon Checkerbloom: A Rare California Native Worth Protecting

Meet Oregon checkerbloom (Sidalcea oregana hydrophila), a native perennial that’s quietly making its mark in California’s natural landscapes. This lesser-known member of the mallow family might not be the showiest plant in the garden center, but it carries an important story about conservation and native plant stewardship.

What Makes This Plant Special?

Oregon checkerbloom is what botanists call a forb – essentially a flowering plant that stays soft and green rather than developing woody stems like shrubs or trees. As a perennial, it returns year after year, making it a reliable presence in the garden once established.

What sets this particular variety apart is its native heritage and conservation status. This plant is indigenous to the lower 48 states, with its range specifically documented in California.

A Conservation Concern

Here’s where things get interesting – and important. Oregon checkerbloom has a Global Conservation Status of S5T3, which indicates this subspecies faces some conservation challenges. This ranking suggests that while the broader species may be secure, this particular variety deserves our attention and protection.

For gardeners interested in supporting native biodiversity, this presents both an opportunity and a responsibility. Growing rare native plants can be incredibly rewarding and helps preserve genetic diversity, but it must be done thoughtfully.

Should You Plant Oregon Checkerbloom?

If you’re drawn to the idea of cultivating this native beauty, here are some important considerations:

  • Source responsibly: Only purchase plants from reputable native plant nurseries that can verify their stock comes from ethically collected seeds or properly propagated plants – never from wild collection
  • Understand the commitment: Growing rare plants means becoming a steward for conservation
  • Consider your location: Since this plant is documented in California, it’s best suited for gardens within or near its natural range
  • Be patient with information: As with many rare subspecies, detailed cultivation information may be limited

The Bigger Picture

While specific growing instructions for Oregon checkerbloom can be hard to come by, its story highlights something crucial about native gardening. Every time we choose to plant native species – especially those that need our help – we’re participating in conservation right in our own backyards.

Native plants like Oregon checkerbloom have co-evolved with local wildlife over thousands of years. Even when we don’t have complete information about their specific benefits to pollinators and other creatures, we can trust that they play important roles in their ecosystems.

A Gardener’s Role in Conservation

Growing rare native plants isn’t just about having something unique in your garden – it’s about being part of a solution. By cultivating Oregon checkerbloom responsibly, gardeners can help ensure that this subspecies doesn’t slip further toward rarity.

If you’re interested in Oregon checkerbloom, connect with local native plant societies, botanical gardens, or conservation organizations. They may have insights about this plant’s needs and potentially ethical sources for obtaining it.

Remember, every native plant in our gardens is a small victory for biodiversity. Whether it’s the rare and special Oregon checkerbloom or more common native species, each one contributes to creating habitat and supporting the intricate web of life that makes our ecosystems thrive.

Oregon 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 oregana (Nutt. ex Torr. & A. Gray) A. Gray - Oregon checkerbloom

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