North America Native Plant

Heartscale

Botanical name: Atriplex cordulata

USDA symbol: ATCO2

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Heartscale: A Rare California Native Worth Protecting Meet heartscale (Atriplex cordulata), a little-known annual plant that calls California home. While you might not have heard of this particular member of the saltbush family, it’s worth getting acquainted with – especially if you’re passionate about rare native plants and conservation gardening. ...

Rare plant alert!

Region: Conservation status by state

Status: S2: Status is uncertain but is somewhere between the following rankings: 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) ⚘

Heartscale: A Rare California Native Worth Protecting

Meet heartscale (Atriplex cordulata), a little-known annual plant that calls California home. While you might not have heard of this particular member of the saltbush family, it’s worth getting acquainted with – especially if you’re passionate about rare native plants and conservation gardening.

What Makes Heartscale Special?

Heartscale is a native California annual that belongs to the Atriplex genus, commonly known as saltbush or orache. What sets this species apart isn’t just its charming common name, but its conservation status. This plant is considered imperiled, with a Global Conservation Status of S2, meaning it’s extremely rare with typically only 6 to 20 known occurrences remaining.

Where Does Heartscale Grow?

This rare native is found exclusively in California, making it a true Golden State endemic. Its limited distribution contributes to its imperiled status, and finding populations in the wild requires knowing exactly where to look.

Garden Suitability and Growing Conditions

Here’s where things get a bit tricky for eager gardeners. Due to heartscale’s rarity, detailed horticultural information is quite limited. What we do know is that it’s classified as facultative for wetland status in both the Arid West and Western Mountains regions, meaning it can grow in both wetland and non-wetland conditions – giving it some flexibility in garden settings.

As an annual plant, heartscale completes its entire life cycle in one growing season, which means you’d need to replant or allow it to self-seed each year.

Should You Plant Heartscale?

This is where we need to have a serious conversation about conservation ethics. While supporting rare native plants is admirable, heartscale’s imperiled status means that any garden use should be approached with extreme caution and responsibility.

If you’re determined to grow this rare beauty, here are the golden rules:

  • Only source seeds or plants from reputable native plant societies or conservation organizations
  • Never collect from wild populations – this could harm already vulnerable communities
  • Consider participating in conservation seed collection programs instead
  • Focus on habitat restoration rather than ornamental gardening

Conservation-Minded Alternatives

Instead of seeking out this rare species for your garden, consider growing some of heartscale’s more common Atriplex relatives. Species like fourwing saltbush (Atriplex canescens) or desert holly (Atriplex hymenelytra) can give you that authentic California native saltbush experience without putting pressure on rare populations.

The Bottom Line

Heartscale represents one of those special plants that’s more important in its natural habitat than in our gardens. While its rarity makes it fascinating, it also makes it a species we should admire from afar and support through conservation efforts rather than cultivation. Sometimes the most loving thing we can do for a plant is to let it thrive where it belongs – in the wild spaces of California that it calls home.

If you’re passionate about rare California natives, consider volunteering with local native plant societies or conservation organizations. They often need help with seed collection, habitat restoration, and monitoring programs – ways you can make a real difference for species like heartscale while keeping your hands in the soil.

Heartscale

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

Chenopodiaceae Vent. - Goosefoot family

Genus

Atriplex L. - saltbush

Species

Atriplex cordulata Jeps. - heartscale

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