Gardeners Almanac

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Arugula

Garden Vegetables

How to Grow Arugula in Your Canadian Garden: Peppery Greens for Every Season

Arugula, also known as rocket or roquette, is a fast-growing leafy green with a zesty, nutty flavor. Ideal for early spring or fall planting in Canada, arugula thrives in cool temperatures and offers continuous harvests for salads, sandwiches, and more.

Why Grow Arugula?

  • Quick Maturity: Ready to harvest in just 20–40 days.

  • Cold-Hardy: Perfect for early or late-season planting.

  • Flavorful: Adds a distinctive spicy kick to dishes.

  • Compact Growth: Great for small gardens and containers.

Best Arugula Varieties for Canadian Gardens

  • Astro: Mild flavor, ideal for baby greens.

  • Roquette: Traditional wild type with a stronger flavor.

  • Sylvetta (Wild Arugula): More heat-tolerant and slower to bolt.

Soil Requirements

  • Type: Loose, fertile, well-draining soil.

  • pH: 6.0–7.0.

  • Fertility: Amend with compost or a light fertilizer.

Arugula prefers consistent moisture and nutrient-rich soil.

Sunlight & Temperature

  • Sun: Full sun to partial shade.

  • Temperature: Grows best in 10–18°C (50–65°F).

  • Heat Sensitivity: Tends to bolt in hot weather.

Planting Guidelines

  • Direct Sow: As soon as the soil can be worked in early spring; again in late summer.

  • Spacing:

    • 1 inch apart for baby greens.

    • Thin to 4–6 inches for larger leaves.

  • Depth: ¼ inch deep.

Succession sow every 2–3 weeks for continuous harvests.

Watering & Feeding

  • Watering: Keep soil consistently moist but not waterlogged.

  • Feeding: Light feeder—compost is typically sufficient.

Yield Per Square Foot

  • Per square foot: 16–25 baby greens or 9–12 mature plants.

Common Pests & Diseases

  • Pests: Flea beetles, slugs, aphids.

  • Diseases: Downy mildew, damping off.

  • Prevention: Use row covers and crop rotation.

Harvesting Tips

  • Baby greens ready in 20–25 days.

  • Harvest outer leaves or cut entire plant 1 inch above soil.

  • Regrows for multiple cuttings if not harvested too low.

Storage Tips

  • Store unwashed in plastic bags in the fridge for up to 5 days.

  • Best eaten fresh for peak flavor.

Container Growing

  • Ideal for containers at least 4–6 inches deep.

  • Perfect for balconies, patios, or window boxes.

Culinary Uses

  • Add fresh to salads, wraps, and sandwiches.

  • Sauté lightly or blend into pesto.

  • Pair with citrus, nuts, and cheeses.

🌱 Arugula Planting Calendar (Southern Canada)

Task Timeline Notes
Direct sow outdoors April to early May Repeat every 2–3 weeks for succession
Fall sowing window Mid-August to September Cooler temps reduce bolting
Harvest window May–June; Sept–Oct Baby leaves in ~3 weeks

Arugula Planting Diagram

 Raised Bed Layout (4 ft x 4 ft)

 +-----------------------------+
 | o o o o o o o o o o o o o o |  o = Arugula (3–4 in. apart)
 | o o o o o o o o o o o o o o |
 | o o o o o o o o o o o o o o |
 +-----------------------------+

🥬 Companion Chart: Arugula vs. Mustard Greens vs. Lettuce vs. Spinach

Feature Arugula Mustard Greens Lettuce Spinach
Days to Harvest 20–40 days 30–50 days 30–55 days 30–45 days
Yield per sq. ft. 16–25 (baby), 9–12 9–16 (baby), 4–6 4–6 heads or 12 leaves 9–16 (baby), 4–6 full
Cold Tolerance Excellent Excellent Good Excellent
Storage Longevity Up to 5 days Up to 1 week 1 week Up to 1 week
Flavor Profile Peppery, nutty Spicy, sharp Mild, crisp Mild, earthy
Best Planting Time Spring & fall Spring & fall Spring & fall Spring & fall

 

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