Corn salad, how to grow corn salad

A few leaves of corn salad in the growing bed.

Corn salad is an easy type of salad green that is easy to grow, requires little space and is open to all, even if all you’ve got is a balcony or terrace.

Core Corn Salad facts

NameValerianella olitoria
Type – biennial

Height – 8 to 12 inches (20 to 30 cm)
Exposure – part sun
Soil – ordinary

Planting – August to October
Harvest – fall, winter, spring

Sowing, planting, caring for it and harvesting it will help you get great corn salad. Here is how to grow the queen of the winter greens!

How to sow corn salad

Corn salad is sown in rows from August to October depending on the needs of the harvest.

When sowing end of August, you’ll harvest corn salad in fall whereas the last seeds sown in October will give you corn salad in the following spring.

1 – Hollow out small trenches (furrows) about ½ inch (one centimeter) deep.

2 – Space these furrows 8 to 10 inches (20 to 25 cm).

3 – Sow inside these furrows, and cover with a little soil mix or garden soil.

4 – Water regularly but not too much.

5 – As soon as the first leaves appear, thin to 3 to 4 inches (8 to 10 cm).

Also take note that it is very easy to grow corn salad in pots, containers or garden boxes so you can also produce some on your balcony or terrace.

Alternatively, simply broadcast corn salad seeds, taking great care to rake the area after sowing to bury the seeds.

After that, same as described earlier: water regularly and thin down to 3 to 4 inches (8 to 10 cm).

Planting corn salad purchased in a nursery pot

If you wish to avoid the seedling stage, it is often possible to purchase your corn salad in nursery pots with small leaves.

You can plant them in the ground, either in your vegetable patch or in a garden box on a terrace or balcony.

  • Space each plant 2 to 4 inches (5 to 10 cm) apart and water regularly.

Harvesting corn salad

Corn salad is harvested when the leaf rosettes are well formed, around 3 months after sowing.

  • As you harvest, no need to pull out the root which is full of dirt. Simply snip the leaves off.
  • Leaving the roots in should let you have a second harvest.
  • You must absolutely harvest before the corn salad goes to seed.
  • When ready for harvest, corn salad is a stark green color and slightly velvety leaves.

Growing corn salad in winter

It is possible to harvest corn salad all winter long.

For that, select cold resistant corn salad varieties like ‘Ronde Maraîchère’, ‘Verte de Cambrai’, ‘Coquille de Louviers’, ‘Trophy’ or ‘Topaze’.

  • These can be sown from end of September to October directly in the ground.

As soon as the cold hits, protect your seedlings and plants with a small greenhouse, a tunnel, or any other device that will help your corn salad grow even though temperatures are below freezing, providing as much light as possible.

Known corn salad diseases

Corn salad growing and infected with a disease, probably powdery mildew.Excess moisture is detrimental to growing corn salad. It will attract parasites and increase occurrence of certain diseases.

  • Space your plants so that they don’t touch.
  • Avoid wetting the leaves directly.

Here is how to identify corn salad diseases

  • Black spots on the leaves are a sign of rust.
  • A layer that is velvety white hint that powdery mildew has appeared.
  • To eradicate these diseases, simply spray a relevant fungicide like Bordeaux mixture.

All there is to know about corn salad

Harvested corn saladRather easy to grow,  doesn’t require much care during its entire growth phase, except for light regular watering.

Corn salad doesn’t deliver much energy, but contains high amounts of water and an excellent omega 3 ratio.

There are also many trace elements, fibers, minerals and vitamins that our bodies require.

In a nutshell, remember that corn salad is easy to grow and boasts high nutritional content: great assets for any gardener!

How to keep corn salad

Even though it doesn’t keep very well, it still is possible to extend the shelf-life of corn salad a bit longer if you wrap it loosely in a cloth or plastic wrap and store it in the vegetable compartment of your refrigerator.

Smart tip about corn salad

Stage sowing dates and varieties to produce corn salad for many long months.

Credits for images shared to Nature & Garden (all edits by Gaspard Lorthiois):
Healthy growing corn salad by Martin Malec under © CC BY-SA 2.0
Corn salad with mildew by Scot Nelson ★ under Public Domain
Fresh corn salad by T. Gaier under Pixabay license