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How to Grow Wall Cress

Wall Cress

Arabidopsis thaliana

herb

Wall cress is a small, fast-growing herbaceous plant with delicate white or pale pink flowers and thin, deeply lobed leaves. It is primarily valued as a model organism in scientific research but can be cultivated as an edible microgreen or ornamental herb. The plant has a peppery flavor similar to watercress and thrives in cool conditions.

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Example Wall Cress timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Wall Cress

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. Harvest Wall Cress

    Around May 17

    ≈ 30 days after planting

Sample dates for Pittsburgh, PA. Sign up to get exact Wall Cress dates for your own zip code.

Growing Conditions

☀️
Sun: Full sun to partial shade, 4-6 hours daily
💧
Water: Keep soil consistently moist but not waterlogged; water when top inch of soil is dry
📏
Spacing: 6 inches
📅
Days to maturity: 30-45 days to flowering
🌱
Planting depth: Surface sow or press lightly into soil; requires light to germinate

Soil

Type: Well-draining loamy soil
pH: 6.0-7.0
Amendments:
Compost Aged manure Peat moss

Growing Zones

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Thrives in zones 3-8; prefers cool seasons

3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b

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Growth Stages

1

Germination

5-10 days

Tiny seedlings with first true leaves emerging; delicate and pale green

Keep soil moist and provide bright light; thin crowded seedlings if direct sown

2

Seedling/Vegetative Growth

10-15 days

Development of characteristic deeply lobed rosette leaves; plant remains low to ground

Maintain consistent moisture; fertilize lightly with balanced fertilizer every 2 weeks if desired

3

Bolting

7-10 days

Stems elongate and shoot upward; plant transitions from rosette to flowering form

Reduce watering slightly; provide cooler temperatures if possible to slow bolting

4

Flowering

2-3 weeks

Delicate small white or pale pink four-petaled flowers appear on thin stems above foliage

Enjoy ornamental display; pollinate by hand or allow insects to pollinate if seed collection desired

5

Seed Production

2-3 weeks

Long thin silique seed pods develop and mature; plant begins to senesce

Allow pods to dry on plant before harvesting seed; leave some to self-seed if desired

Companion Planting

Plan your garden →

Plant with:

Lettuce Spinach Arugula Radish Chervil Parsley

Avoid planting near:

Mustard family crops (Brassica) in excess Heavy nitrogen feeders that may compete

Common Pests

  • Use row covers on seedlings; spray with insecticidal soap or neem oil if severe

  • Spray with water to dislodge; use insecticidal soap or neem oil

  • Yellow sticky traps; spray with neem oil

  • Improve air circulation; spray with sulfur or baking soda solution

Uses

🍳

Salads and microgreens

Culinary

Young wall cress leaves have a peppery, slightly bitter flavor similar to arugula or watercress. They are excellent raw in salads, as microgreens, or added to sandwiches and wraps for a nutritious crunch. [source]

🍳

Cooked greens and soups

Culinary

Wall cress can be lightly cooked and added to soups, stir-fries, or wilted as a side dish. Cooking mellows the peppery flavor while retaining nutritional value. [source]

💊

Nutritional and antioxidant support

Medicinal

Wall cress is rich in vitamins A, C, and K, minerals, and phytonutrients with potential antioxidant and anti-inflammatory properties. Traditional herbalism uses cress species to support respiratory and digestive health. [source]

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Garden borders and pollinator support

Ornamental

The delicate white flowers are attractive in spring gardens and provide early-season nectar for bees and other pollinators. The plant's compact size makes it suitable for borders and containers. [source]

🏠

Model organism and science education

Household

Wall cress is the primary model organism in plant biology and genetics research, making it valuable for educational demonstrations and home science experiments on plant growth and heredity. [source]

This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.

Harvest Tips

Harvest leaves when young and tender, 4-6 weeks after planting, before flowering for best flavor. Pinch or cut outer leaves to encourage continued growth, or harvest entire rosette. For microgreens, cut at 1-2 inches tall. Seed pods can be collected when dried and brown.

Fun Facts

  • 🌱 Wall cress (Arabidopsis thaliana) was the first plant to have its entire genome sequenced in 2000, making it one of the most studied organisms in biology.
  • 🌱 The plant gets its common name 'wall cress' from its ability to thrive in rocky, infertile conditions and grow along old stone walls and masonry.
  • 🌱 Wall cress produces thousands of seeds per plant and can complete its entire life cycle in just 5-6 weeks under ideal conditions, making it ideal for rapid generation studies.

Gardening Terms

New to gardening? Learn about terms used in this guide:

Bolt Direct Sow Full Sun Partial Shade True Leaves
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