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How to Grow Serrated Leaf Wild Arugula

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Serrated Leaf Wild Arugula

Diplotaxis tenuifolia

vegetable

Serrated leaf wild arugula is a peppery leafy green with deeply lobed, feathery foliage that is more complex in flavor than cultivated arugula. Native to the Mediterranean, it grows as a perennial or cool-season annual and produces delicate yellow flowers. It's a hardy, prolific grower that tolerates heat better than common arugula and regrows vigorously after cutting.

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Example Serrated Leaf Wild Arugula timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Serrated Leaf Wild Arugula

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. Harvest Serrated Leaf Wild Arugula

    Around May 17

    ≈ 30 days after planting

Sample dates for Pittsburgh, PA. Sign up to get exact Serrated Leaf Wild Arugula dates for your own zip code.

Growing Conditions

☀️
Sun: Full sun to partial shade (6+ hours of sun; afternoon shade helps in hot climates)
💧
Water: Keep soil consistently moist but not waterlogged. Water deeply 1-2 times per week depending on temperature; more frequent in hot weather, less in cool seasons.
📏
Spacing: 6-12 inches
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Days to maturity: 30-50 (first harvest as baby greens; 50+ for full mature leaves)
🌱
Planting depth: 0.25-0.5 inches

Soil

Type: Well-draining loamy to sandy soil
pH: 6.0-7.5
Amendments:
compost aged manure perlite for drainage

Growing Zones

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Grows best in zones 5-9; can be grown year-round in zones 9-10; cold-hardy in zones 3-4

3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b

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Growth Stages

1

Germination & Seedling

10-14 days

Seeds sprout within 5-10 days. Tiny seedlings emerge with smooth cotyledons followed by the first true leaves with characteristic serrated edges.

Keep soil moist but not soggy. Provide bright light to prevent leggy growth. Thin seedlings to proper spacing once they have 2-3 true leaves.

2

Vegetative Growth

15-30 days

Plant develops deeply lobed, feathery leaves with serrated edges. Growth is relatively fast and bushy. Plant remains low to the ground in rosette form.

Water consistently and provide adequate light. Begin light harvesting or thinning when plants reach 4-6 inches tall. Mulch to conserve moisture.

3

Mature Leaf Stage

Ongoing (weeks 5-10+)

Plant reaches full size with abundant, fully developed serrated leaves ready for harvest. Leaves are dark green and deeply textured.

Continue regular watering and harvesting. Pinch off any flower buds if you want to extend the leafy harvest period. Monitor for pests and diseases.

4

Bolting & Flowering

2-4 weeks (timing varies by temperature)

Plant sends up flower stalks with delicate yellow flowers. Leaves may become slightly tougher and more bitter as energy shifts to reproduction.

Bolting is natural and can be delayed by consistent moisture and cooler temperatures. Pinch off flowers to extend leaf production, or allow flowering for seed collection.

5

Seed Production & Regrowth

Ongoing (3-4 weeks per regrowth cycle)

Flowers set thin, elongated seed pods. Plant remains productive, especially if cut back; new leaves regenerate from the base.

Allow some plants to go to seed for next season or succession planting. Cut mature plants back to 2 inches to encourage regrowth. Can produce multiple harvests.

Companion Planting

Plan your garden →

Plant with:

tomato beet carrot lettuce spinach cucumber bean radish nasturtium borage

Avoid planting near:

fennel kohlrabi

Common Pests

  • Use row covers, diatomaceous earth, or neem oil spray. Intercrop with garlic or chives. Remove cruciferous weeds that harbor the pest.

  • Apply Bacillus thuringiensis (Bt) spray or use row covers. Hand-pick larger caterpillars. Encourage predatory insects like parasitic wasps.

  • and

    Remove hiding places like debris. Use beer traps, copper barriers, or diatomaceous earth. Hand-pick in early morning or evening.

  • Spray with strong water jet to dislodge. Use insecticidal soap or neem oil. Encourage beneficial insects like ladybugs and lacewings.

  • Use yellow sticky traps. Spray undersides of leaves with neem oil or insecticidal soap. Increase air circulation.

Uses

🍳

Peppery Salads & Fresh Cooking

Culinary

Serrated leaf wild arugula's complex, peppery flavor makes it ideal raw in salads, on pizzas, and as a pesto base. The tender younger leaves are milder while mature leaves provide bold, spicy notes. [source]

🍳

Cooked Greens & Pasta

Culinary

Wilts beautifully in pasta dishes, soups, and sautéed vegetable preparations. The peppery flavor mellows slightly when cooked but retains its distinctive character. [source]

💊

Digestive & Antioxidant Support

Medicinal

Wild arugula is rich in glucosinolates, sulfur compounds with potential anti-inflammatory and detoxifying properties. Traditionally used to support digestion and general wellness. [source]

🏠

Sustainable & Prolific Home Production

Household

Serrated leaf wild arugula's heat tolerance and vigorous regrowth make it an excellent choice for continuous home harvesting with minimal inputs, reducing grocery shopping needs. [source]

🎨

Edible Flowers & Seed Production

Craft

The delicate yellow flowers are edible and add visual appeal to dishes. Self-seeds readily, allowing gardeners to save seed for next season's crop. [source]

This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.

Harvest Tips

Begin harvesting outer leaves when the plant is 4-6 inches tall (25-35 days), or harvest entire rosette at ground level for repeated regrowth. Pinch off leaves from the base upward to encourage branching. Young leaves (baby arugula) are milder and more tender; mature leaves are intensely peppery. Wild arugula regrows vigorously after cutting—cut back to 1-2 inches above soil for a new flush. Harvest in early morning for best flavor and crispness. Can be harvested 3-4 times per season.

Fun Facts

  • 🌱 Serrated leaf wild arugula (Diplotaxis tenuifolia) is distinctly different from common cultivated arugula (Eruca vesicaria) and is actually the hardier, more heat-tolerant perennial species, making it superior for hot-climate gardening.
  • 🌱 Wild arugula's peppery bite comes from glucosinolates—the same sulfur compounds found in other brassicas like broccoli and cabbage—which have been studied for potential cancer-preventive properties.
  • 🌱 Unlike cultivated arugula, which becomes very bitter when flowering, wild arugula's delicate yellow flowers and young flower buds are actually edible and delicious, adding both flavor and aesthetic beauty to salads and plates.

Gardening Terms

New to gardening? Learn about terms used in this guide:

Annual Bolt Full Sun Mulch Partial Shade Perennial Succession Planting Thinning True Leaves
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