Diplotaxis erucoides. This cool season wild arugula has the same sinus-blazing heat of the Japanese horseradish paste. Use the spicy leaves raw or cooked — Wasabi Arugula is a fantastic topping for pizza. This plant thrives in the cooler weather of the fall, winter, and spring, and it makes remarkable micro-greens at any time of the year. It is a relatively compact plant, like the other arugula varieties. Its edible white flowers also make a nice garnish. Grow Wasabi Arugula in containers or in the garden row. Sowing the seeds several times through the cool season will provide a constant harvest.
Matures in 45 days (28 days for micro-greens). Open-pollinated seeds.
How to Grow Arugula
Arugula is a productive, cool season, annual salad green that works best in spring and fall, and can be managed all winter under cloche protection. In hot weather, arugula will go to seed. Continue reading below to find out how to grow arugula from seed.
Latin: Eruca sativa (Wild Arugula is Diplotaxis tenuifolia)
We Recommend: Astro (MS483). All arugulas are good, but Astro stands out. Grow this variety in cool weather, or try it as a microgreen at any time of year.
For Urban Gardeners: Try Adagio (MS503) in containers on your balcony. Its natural resistance to bolting means it works a little better in containers than some of the others.
Season & Zone
Season: Cool season. Arugula tends to bolt in hot weather.
Exposure: Full sun to partial shade.
Zone: Hardy in all zones.
Direct sow every 3 weeks from mid-March to April and again in September for a fall/winter crop. Optimal soil temperature: 4-12°C (40-50°F).
Sow no more than 5mm (¼”) deep in well drained soil in full sun. Thin seedlings to 10-15cm (4-6″) apart in rows 45-60cm (18-24″) apart. Overcrowded plants will bolt earlier. Seeds germinate in 4-8 days.
Ideal pH: 6.5-7.0. keep moist until germinated and then just keep the area weeded.
Use as a cut & come again crop, harvesting with scissors. Baby leaves are mild and tender.
In optimum conditions at least 75% of seeds will germinate. Usual seed life: 3 years. Per 100′ row: 1.2M seeds, per acre: 348M seeds.
Diseases & Pests
Flea beetles will cause numerous tiny holes in the leaves. If these appear, try planting a couple of weeks later next year, to avoid their laying cycle. Or plant under lightweight row cover.
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