North America Non-native Plant

European Cornsalad

Botanical name: Valerianella carinata

USDA symbol: VACA4

Life cycle: annual

Habit: forb

Native status: Non-native, reproduces and persists in the wild in the lower 48 states  

European Cornsalad: A Delicate Annual for Cool-Season Gardens If you’re looking for an easy-going annual that doubles as both garden greenery and salad bowl filler, European cornsalad (Valerianella carinata) might just tickle your fancy. This petite European native has quietly made itself at home in parts of the American West, ...

European Cornsalad: A Delicate Annual for Cool-Season Gardens

If you’re looking for an easy-going annual that doubles as both garden greenery and salad bowl filler, European cornsalad (Valerianella carinata) might just tickle your fancy. This petite European native has quietly made itself at home in parts of the American West, offering gardeners a charming addition to cool-season plantings.

What Exactly Is European Cornsalad?

European cornsalad is a delicate annual forb that belongs to the same family as valerian. Don’t let the corn in its name fool you – it has nothing to do with corn! This little herbaceous plant forms neat rosettes of spoon-shaped leaves and produces clusters of tiny white to pale pink flowers that seem almost too small to notice at first glance.

As a non-native species that was introduced from Europe and the Mediterranean region, European cornsalad has established populations in California, Idaho, Oregon, and Washington, where it reproduces on its own in the wild.

Why Grow European Cornsalad?

There are several reasons why gardeners might want to give this little plant a try:

  • Edible leaves: The tender, nutty-flavored leaves make excellent salad greens, especially in cooler weather
  • Low maintenance: Once established, it practically takes care of itself
  • Pollinator friendly: Those tiny flowers attract beneficial insects like small flies and beetles
  • Cool-season performer: Thrives when other plants are struggling in chilly weather
  • Self-seeding: Will readily reseed itself for next year’s crop

Garden Role and Design Uses

European cornsalad works wonderfully as a ground cover in partially shaded areas or as an understory plant in herb and cottage gardens. Its low-growing habit and delicate texture make it perfect for edible landscaping projects or naturalized meadow areas. The plant typically reaches about 6-12 inches in height and spreads in a modest, non-aggressive manner.

Growing Conditions and Care

This adaptable little plant is surprisingly easy to please:

  • Light: Partial shade to full sun (though it appreciates some afternoon shade in warmer areas)
  • Soil: Well-draining soil of average fertility
  • Water: Prefers consistently moist but not waterlogged conditions
  • Temperature: Cool-season lover that grows best in temperatures between 45-65°F

Planting and Care Tips

Getting started with European cornsalad is refreshingly straightforward:

  • Direct seed in fall or early spring when soil temperatures are cool
  • Scatter seeds lightly on prepared soil surface and barely cover
  • Keep soil consistently moist until germination (usually 7-14 days)
  • Thin seedlings to about 4-6 inches apart once they’re established
  • Harvest leaves when young and tender for the best flavor
  • Allow some plants to flower and set seed for next season’s crop

USDA Hardiness Zones

As an annual, European cornsalad can grow in USDA zones 3-9, completing its entire life cycle within one growing season. The key is timing your planting to take advantage of cool, moist conditions.

A Word About Native Alternatives

While European cornsalad is a charming and useful plant, gardeners interested in supporting native ecosystems might also consider native alternatives like lamb’s quarters (Chenopodium album) or native wild lettuce species (Lactuca species), which can provide similar edible greens and garden benefits while supporting local wildlife more effectively.

The Bottom Line

European cornsalad offers gardeners an easy-care annual that bridges the gap between ornamental and edible gardening. While it may not be native to North America, it’s well-behaved in the garden and provides genuine benefits to both gardeners and beneficial insects. Whether you’re looking to add some variety to your salad bowl or simply want a delicate ground cover for those tricky cool-season months, this little European emigrant might just earn a permanent spot in your garden rotation.

European Cornsalad

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Dipsacales

Family

Valerianaceae Batsch - Valerian family

Genus

Valerianella Mill. - cornsalad

Species

Valerianella carinata Loisel. - European cornsalad

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