Arugula care guide

Pets and children

We haven't been able to confirm how this plant affects pets or small children. If any is eaten, consult a veterinarian or a doctor.

How often to water Arugula

Spring–Summer (Mar–Sep)

Every 2 days

Water thoroughly whenever the topsoil dries, as a guide; in summer it dries fast, so check in the morning.

Autumn (Oct–Nov)

Every 3 days

Autumn-sown plants grow well now; as a guide, water about a day after the topsoil dries.

Winter (Dec–Feb)

Every 4 days

Growth slows, so as a guide water in the morning about two to three days after the soil dries.

Light and placement for Arugula

A sunny, airy spot is about right; stronger sun makes the leaves more peppery, so in summer light shade generally gives milder leaves, and indoors a bright window works.

Overwintering Arugula

Overwintering guide: 0°C (32°F) or above

It takes a light frost, but as a guide cover it with fleece or move it under the eaves on nights below 0°C; growth mostly stops below about 5°C, so harvest autumn sowings by early winter.

Fertilizing and repotting Arugula

Fertilizer

In soil with a base fertilizer, diluted liquid feed about every two weeks once harvesting starts is usually enough; too much nitrogen makes the leaves soft and attracts aphids.

When to repot

Spring–Summer (Mar–Sep), Autumn (Oct–Nov)

Common problems with Arugula

• Summer heat makes it bolt, and the leaves turn tough and bitter.
• Cabbage worms, diamondback moths, and aphids chew the leaves.
• In a dim room it stretches into thin, floppy stems.

Tips for growing Arugula

• Picking the outer leaves first keeps the plant producing for weeks.
• Sowing a small batch every two to three weeks gives a steady supply.
• The flowers are edible too, so a bolted plant can still be enjoyed.

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