annual

Corn Salad

Valerianella locusta

The Story

Plant Bio

Valerianella locusta is a low-growing, compact annual herb that forms a tight basal rosette of succulent, spoon-shaped leaves before bolting in spring. The plant produces dichotomously forked flowering stems topped with dense, small clusters of minute, bluish-white flowers.

This exceptionally cold-hardy salad green tolerates hard freezes down to 5°F, making it a reliable winter-harvest crop. The soft-textured, mild-flavored foliage offers an excellent cool-season alternative to traditional lettuces.

Uses & Benefits:

Ornamental UsesForms neat, bright green rosettes that provide attractive ground cover in cool-season beds.
Practical UsesYields a highly nutritious, tender, and cold-hardy salad green during the winter and early spring months.
Ecological BenefitsProvides an early spring nectar source for generalist pollinators when the plant is allowed to flower.

Essentials

At a Glance

Plant Type

Annual

Height

12"

Width

8"

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7, 8, 9

Water

Medium

Humidity

Moderate

Lifespan

Annual

Native To

Europe, western Asia, and northern Africa

Toxicity

Non-toxic

Bloom period

Early spring – Late spring

J
F
M
A
M
J
J
A
S
O
N
D

In flower about 3 months of the year

Planting

How to Grow

  1. Sow seeds directly into fertile, well-draining loamy or sandy soil in early spring or late summer.
  2. Space seeds or thin seedlings to 4 to 6 inches apart to allow proper rosette development.
  3. Maintain consistent soil moisture, watering regularly to prevent the succulent leaves from becoming tough or bitter.
  4. Harvest outer leaves individually or cut the entire rosette at the base before the plant begins to bolt.

Pro Tip

Sow seeds only when soil temperatures are below 68°F (20°C); warmer soils trigger thermodormancy, completely preventing germination.

Keep It Thriving

Care Guide

Do

  • Sow in cool weather when soil temperatures are between 50°F and 65°F.
  • Provide partial shade during warm spring spells to delay bolting.
  • Incorporate a light application of compost or organic fertilizer prior to planting.

Don't

  • Do not sow seeds in midsummer, as high temperatures prevent germination.
  • Avoid overhead watering to minimize the risk of downy and powdery mildew.
  • Do not allow the soil to dry out completely, which causes immediate drought stress and premature bolting.

Seasonal Care Calendar

TaskJanFebMarAprMayJunJulAugSepOctNovDec
Harvest
Pest Check
Plant
Winter Prep

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Edible GardenCool-Season AnnualBorder EdgingContainer Gardening

Multiply

Propagation Methods

Good to Know

Common Questions

Corn Salad questions

What zones can Corn Salad grow in?

Corn Salad is hardy in USDA Zones 4–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Corn Salad deer resistant?

Yes — Corn Salad is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

When does Corn Salad bloom?

Corn Salad typically blooms in early spring through late spring. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Corn Salad need full sun?

Corn Salad does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Keep exploring

Grow Corn Salad with confidence

See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.