Corn Salad

Family: Caprifoliaceae

Genus: Valerianella

Species: locusta

History

Corn Salad, or mâche, is a mild-tasting green native to Europe. It was foraged by peasants in the Middle Ages and later cultivated in kitchen gardens. The name refers to its traditional association with cornfields. It came to Australia with heirloom seed exchanges and suits cool-season salad growing.

Sowing Calendar

Best Months to Plant – Corn Salad
Climate ZoneJanFebMarAprMayJunJulAugSepOctNovDec
Cool/Mountain
Temperate
Arid
Subtropical
Tropical
Cool/Mountain – Corn Salad
MethodJanFebMarAprMayJunJulAugSepOctNovDec
Start in trays
Plant out transplants
Direct sow
Temperate – Corn Salad
MethodJanFebMarAprMayJunJulAugSepOctNovDec
Start in trays
Plant out transplants
Direct sow
Arid – Corn Salad
MethodJanFebMarAprMayJunJulAugSepOctNovDec
Start in trays
Plant out transplants
Direct sow
Subtropical – Corn Salad
MethodJanFebMarAprMayJunJulAugSepOctNovDec
Start in trays
Plant out transplants
Direct sow
Tropical – Corn Salad
MethodJanFebMarAprMayJunJulAugSepOctNovDec
Start in trays
Plant out transplants
Direct sow

Where to Plant

Shady Spots & Herb Gardens

Shady Spots & Herb Gardens
• Areas receiving dappled or indirect sunlight, often near trees or buildings
• Best for shade-tolerant herbs like mint, parsley, or greens like spinach
• Helps prevent sun stress and conserves moisture
• Often used in cooler corners of the garden

In-Ground Garden Beds

In-Ground Garden Beds
• Traditional garden beds dug directly into the soil
• Suitable for deep-rooted crops and long-term plantings
• Offers natural soil ecology and drainage benefits
• Requires proper soil preparation and weed management

Containers & Pots

Containers & Pots
• Portable planting vessels suited for patios, balconies, and small areas
• Provide complete control over soil composition and drainage
• Great for herbs, greens, compact vegetables, or ornamental plants
• Allow plants to be moved to follow sun, shade, or seasonal conditions

Pre-treatment

Soaking in Water

• Place seeds in a cup of clean, room-temperature water
• Soak for 8–24 hours depending on seed type
• Plant immediately after soaking to prevent rot
• Useful for large or hard seeds like beans and beetroot

Sowing Method

Direct Sow

• Sow seeds directly into prepared garden soil or outdoor containers
• Best for plants that dislike transplanting, such as root vegetables and beans
• Loosen soil and remove weeds before sowing
• Sow at the recommended depth and spacing, then water gently
• Keep the area moist until germination and thin seedlings if needed

Hill Planting

• Sow seeds in small mounds or 'hills' of raised soil
• Common for pumpkins, cucumbers, and zucchinis
• Improves drainage and warmth around the roots
• Place 2–4 seeds per hill and thin to the strongest 1–2 seedlings
• Space hills according to plant size to allow spreading vines

Watering

Medium

• Benefits from regular watering, especially during active growth or flowering
• Soil should remain moist but not soggy—allow topsoil to dry slightly between waterings
• Ideal for most vegetables, herbs, and flowering annuals
• More frequent watering may be needed during hot or windy weather
• A layer of mulch can reduce water loss and improve consistency

Fertilisation

Frost

Frost Tender

These plants are sensitive to frost and should be sown after the last frost or grown in protected conditions.

Maintenance and Harvesting

Corn Salad (also known as mâche) needs very little attention but benefits from tidy upkeep. Regularly pick leaves from the outside to prolong the plant’s productive phase. In warmer climates, grow in the cooler months and provide shade if temperatures rise. Water moderately and thin out dense patches to ensure good airflow. Remove any yellowing leaves and top-dress with compost to encourage new growth.

Pests and Diseases

Aphids

Aphids are tiny, soft-bodied insects that cluster on new growth and the undersides of leaves. They suck sap from plants, causing leaves to curl, yellow or become distorted. As they feed, they excrete sticky honeydew that encourages sooty mould, and colonies can build quickly in warm weather.

Start with organic controls: blast colonies off with a firm jet of water, encourage beneficial insects like ladybirds and lacewings, and spray neem oil or insecticidal soap to disrupt feeding. Keep plants well watered and avoid excess nitrogen that promotes soft growth. If pressure remains high, selective chemical sprays can be used sparingly, taking care to protect pollinators and beneficials.

Leaf spot

Leaf spot describes several fungal or bacterial diseases that create dark, often round lesions on foliage—sometimes with yellow halos. Severe infections cause premature leaf drop and reduced vigour, especially during warm, wet spells or when leaves stay damp.

Reduce spread by removing infected leaves, watering at the base, and spacing plants for airflow. Mulch to limit soil splash and rotate crops. Organic preventatives include copper and sulfur sprays applied early. If disease escalates, registered fungicides offer a chemical backup.

Downy mildew

Downy mildew causes pale yellow blotches on upper leaf surfaces with grey‑purple fuzz beneath, spreading fast in cool, moist weather. Heavily infected leaves collapse, slowing growth and yield.

Choose sunny, well‑ventilated positions, water early so foliage dries quickly, and remove infected leaves promptly. Organic options include copper and bio‑fungicides (phosphorous acid salts). For severe pressure, rotate chemical fungicide modes to prevent resistance.

Slugs & snails

Slugs and snails chew irregular holes in foliage and fruit and can wipe out seedlings overnight, especially in damp, sheltered spots.

Remove hiding places, water in the morning, and use beer traps, boards, or shelters to concentrate and hand‑pick. Copper barriers can deter them. For baits, iron‑based pellets are the safest organic option; use metaldehyde baits cautiously due to risks to pets and wildlife.

Damping off (seedlings)

Damping‑off is a soil‑borne disease that attacks seeds and seedlings, causing poor germination, sudden collapse, or pinched, water‑soaked stems at soil level. It thrives in cool, wet, stagnant conditions.

Sow into fresh, clean seed‑raising mix; avoid reusing contaminated trays. Provide warmth, light, and airflow; water lightly and allow the surface to dry between waterings. A light dusting of cinnamon or chamomile tea is a gentle organic measure; fungicidal drenches are rarely necessary for home growers when hygiene is good.

Sclerotinia (lettuce drop)

Sclerotinia (lettuce drop) can affect plant health and yields in home gardens. Typical symptoms include slowed growth, discolouration, and reduced productivity, often triggered by weather, nutrition, or cultural conditions.

Start with cultural fixes: rotate crops, improve soil with compost, water consistently, and choose resistant varieties. Organic sprays or amendments can reduce severity; chemical options are a last resort and should be used carefully and in accordance with labels.

Tipburn (physiological)

Tipburn (physiological) can affect plant health and yields in home gardens. Typical symptoms include slowed growth, discolouration, and reduced productivity, often triggered by weather, nutrition, or cultural conditions.

Start with cultural fixes: rotate crops, improve soil with compost, water consistently, and choose resistant varieties. Organic sprays or amendments can reduce severity; chemical options are a last resort and should be used carefully and in accordance with labels.

Growing Tips

• Corn Salad is prone to bolting as days lengthen. To prevent this, sow at the right time of year and provide shade in hot conditions.
• Corn Salad is prone to tiny leaves in heat. Good cultural practices such as timely sowing, consistent care, and soil preparation can help manage this.
• Corn Salad is prone to best in cool seasons. Good cultural practices such as timely sowing, consistent care, and soil preparation can help manage this.

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