Quick Growing Facts

When & Where to Grow Arugula ‘Roquette’

Arugula thrives in cool weather and grows best in spring and fall. It can be grown almost anywhere with a few weeks of mild temperatures and is perfect for quick successions throughout the season.

• Spring: Sow as soon as soil can be worked and temperatures are consistently above freezing.
• Fall: Sow 4–8 weeks before expected hard frost for crisp, sweet fall greens.
• Summer: In hot climates, grow in light shade or use shade cloth to reduce heat stress and slow bolting.
• Location: Beds, raised beds, and containers all work well; choose a spot with at least 4–6 hours of light.

Soil Preparation

For tender, flavorful leaves, arugula needs loose, fertile soil with steady moisture and good drainage.

• Loosen the top 8–10 in (20–25 cm) of soil and remove weeds, roots, and stones.
• Mix in compost or well-rotted manure to improve fertility and structure.
• Avoid overly compacted soil; roots are shallow and prefer a crumbly, fine seedbed.
• In raised beds or containers, use a high-quality vegetable or salad mix that drains well but holds moisture.

Direct Sowing Arugula Outdoors (Recommended)

Arugula does best when direct-sown where it will grow. Seeds are quick to germinate in cool, moist soil.

1. Timing: Sow outdoors as soon as the soil is workable in spring, and again in late summer or early fall.
2. Prepare the bed: Rake the surface smooth and fine after loosening and adding compost.
3. Sowing depth: Sow seeds about 1/4 in (0.5–0.6 cm) deep.
4. Row spacing: Space rows 10–12 in (25–30 cm) apart, or broadcast seed over a small bed for baby leaf production.
5. Seed spacing: Sow thinly; you can thin seedlings later to the desired spacing.
6. Water: Water gently but thoroughly, then keep the top layer evenly moist until seedlings emerge (5–10 days).

Starting Arugula Indoors (Optional)

Because arugula grows so quickly, starting indoors is usually not necessary, but it can give a small head start in cold climates.

• Sow 3–4 weeks before your last expected frost date.
• Use cell trays with a good seed-starting mix; sow 2–3 seeds per cell and thin to the strongest seedling.
• Keep at 60–70°F (15–21°C) with even moisture and bright light to prevent leggy growth.
• Transplant carefully when seedlings have 3–4 true leaves, spacing 4–6 in (10–15 cm) apart.

Thinning & Plant Spacing

Proper spacing ensures good air circulation and gives plants room to develop tender, flavorful leaves.

• Thin seedlings once they reach 1–2 in (2.5–5 cm) tall.
• For baby leaf harvest, thin to about 2 in (5 cm) apart; you can eat the thinnings.
• For larger rosettes or bunching plants, thin to 4–6 in (10–15 cm) apart.
• Avoid overcrowding, which can lead to weaker plants and more disease pressure.

Succession Sowing for Continuous Harvest

Arugula grows quickly and can bolt (go to flower) once weather turns hot. Succession sowing keeps the harvest coming.

• Sow a small patch every 1–3 weeks during cool seasons instead of one large planting.
• In summer, focus on shadier spots or use shade cloth and water regularly to keep leaves tender.
• Pull or cut plants that bolt and replace them with fresh sowings.

Watering & Feeding

Even moisture and moderate fertility are the keys to crisp, mild arugula leaves.

• Watering: Keep soil evenly moist, especially for baby leaf crops. Avoid extremes of very dry then very wet soil.
• Mulch: A light mulch of compost or fine straw helps maintain moisture and keeps soil cooler.
• Feeding: If soil is moderately fertile, arugula may not need extra fertilizer. In poor soil or containers, apply a balanced organic fertilizer or compost tea once or twice during the growing period.

Pests & Diseases

Arugula is fairly resilient, but tender leaves can attract a few common pests, especially early in the season.

• Flea beetles: Small holes in leaves are often caused by flea beetles. Use floating row covers, especially on young plants, and keep plants growing quickly with good moisture.
• Aphids: Rinse off with water or use insecticidal soap if infestations build up.
• Slugs & snails: In damp areas, protect young seedlings with barriers or traps.
• Fungal issues: Good spacing and avoiding overhead watering late in the day help prevent mildew and leaf spots.

Harvesting Arugula ‘Roquette’

Baby Leaf & Cut-and-Come-Again

• Begin harvesting baby leaves when they are 2–3 in (5–7 cm) long (about 20–30 days after sowing).
• Use scissors to cut leaves or entire plants about 1 in (2–3 cm) above the soil, leaving the growing point intact.
• Plants will regrow for a second or third cutting under good conditions.
• Harvest frequently to keep leaves young and to prevent plants from becoming tough or overly spicy.

Whole Plants & Mature Leaves

• For larger rosettes, harvest entire plants at 35–45 days, before flower stalks elongate.
• If plants begin to bolt, leaves become stronger in flavor; you can still use them cooked or in mixed salads.
• Flower buds are edible and can be used as a spicy garnish.

Storing & Using Arugula

• Rinse leaves gently in cool water and dry thoroughly (salad spinner works best).
• Store in a sealed container or bag in the refrigerator; use within a few days for best quality.
• Enjoy fresh in salads, sandwiches, wraps, and burgers, or scattered over pizza and flatbreads after baking.
• Blend into pesto, smoothies, or sauces, or lightly wilt into warm pasta or grain dishes.

Tips for Success

• Focus on cool seasons — spring and fall plantings give the sweetest, mildest leaves.
• Use succession sowing for a steady supply rather than one large, single planting.
• Provide steady moisture and moderate fertility for fast, tender growth.
• Use row covers early in the season to protect from flea beetles and speed growth.
• Harvest early and often; young leaves are the most tender and pleasantly peppery.

Note: Growing conditions and timing vary by region. Adjust sowing dates, watering, and protection to match your local climate and weather patterns.