Garlic mustard
Alliaria petiolata · Brassicaceae
The gardener's calendar
Ideal time to plant garlic mustard: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Foliage
- Deciduous
- Blooming
- April to June, small white flowers
- Adult size
- 12 to 35 inches in height
- Growth
- Fast
- Hardiness
- Very hardy, down to 5°F
- Origin
- Europe and Western Asia
- Soil type
- Fertile, well-draining, tolerant soils
Care
Light Exposure
Garlic mustard prefers partial shade to full shade, typical of its forest habitat. However, it tolerates direct sun if the soil stays moist. Avoid overly hot and dry exposures in summer.
Watering
Keep the soil moist without waterlogging. Water regularly in spring and summer, especially during dry periods. In autumn and winter, reduce watering based on natural rainfall.
Soil
Choose soil rich in organic matter, well-structured and well-draining. Garlic mustard adapts to many soil types but prefers fertile and slightly moist substrates. Adding compost in spring boosts its vigor.
Pruning and Maintenance
Garlic mustard doesn't require regular pruning. You can remove tired stems after flowering or in late winter. Beware: it self-seeds easily; deadhead spent flower heads if you want to limit its spread.
Fertilizer
Fertilizer isn't strictly necessary in fertile soil. A light application of decomposed compost in spring is more than enough to support its growth and flowering.
Diseases and Pests
Garlic mustard is generally robust. Watch for flea beetles (small beetles) that can riddle leaves with tiny holes. In excessively moist conditions, root rot may occur: improve soil drainage.
Did you know?
Garlic mustard gets its name from the strong garlic smell when you crush its leaves. In Europe, it has long been used as a medicinal and culinary plant, notably in traditional Russian and Slavic cooking. Today, it has naturalized on other continents, where it's sometimes considered an invasive species due to its exceptional ability to self-seed.
Where to buy it
Plant in spring or early autumn, avoiding spells of intense heat. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September.
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Tips generated and checked by Viridia — adapt them to your local climate.