Arugula

Zone 2a Save Garden

🌱 40d to harvest Rosette

Peppery-sweet arugula arrives with a lively, nutty bite and a tender, succulent leaf that feels crisp at first touch. At about 40…

Crop Dates

Milestone	Date
Start Indoors	Direct Sow
Last Frost	May 25th
Transplant / Sow Outdoors	May 25th
Harvest Begins	Jul 4th
Harvest Ends	Aug 29th

Crop Details

Trait	Value
Days to Maturity	40
Sun Requirements	Full Sun
Growth Habit	Rosette
Support Needed	None
Planting Depth	Surface
Germination Temp (°F)	75
Min Soil Temp (°F)	40
Min Night Temp (°F)	30
Harden Off (days)	Not Required

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Frequently Asked Questions

What pest or disease most often affects Eruca vesicaria (arugula), and how can I control it?

Arugula in the Brassicaceae family is commonly hit by flea beetles, which cause small shot-holes in leaves. Use row cover until plants are well established, and check undersides of leaves regularly; hand-pick adults early in the infestation. If damage is ongoing, treat with an insecticidal soap and focus sprays on the underside where beetles feed.

How often should I water arugula during its main growing phase?

During the ~40-day grow period, keep the soil consistently moist but not waterlogged to prevent bitterness and leaf toughening. In warm weather, this usually means watering about 1–2 times per week with enough water to wet the top 6 inches, increasing to more frequent watering if the soil dries out in a day or two. Mulch lightly after emergence to slow moisture loss and avoid letting the soil swing from dry to wet.

How can I tell when arugula (Eruca vesicaria) is ready to harvest?

Harvest when leaves are tender and about 3–6 inches long (often around 35–45 days), before the plant bolts. Pick outer leaves first for a cut-and-come-again crop; avoid waiting until the plant forms a flower stalk, because leaves become hotter and more bitter once flowering starts. If you see rapid stem elongation, harvest immediately to salvage usable leaves.

Peppery-sweet arugula arrives with a lively, nutty bite and a tender, succulent leaf that feels crisp at first touch. At about 40 days, this specialty green forms a compact rosette of ruffled, lance-shaped foliage—deeply flavorful enough to stand on its own, yet delicate enough for fresh salads and bright dressings. Grow it for bold garnishes, quick tosses, and vibrant greens that shine in sauces and finishing swirls.

Sowing Tips

Transplant Conditions

Wait until soil reaches 40°F and nights stay above 30°F before moving outdoors.

Expert Note

For the least bitterness, keep arugula consistently watered and harvest often before it bolts.