This perennial dies back to below ground level each year in autumn, then fresh new growth appears again in spring.

• Position: full sun
• Soil: moist to wet or boggy soil (will grow shallowly submerged in water)
• Rate of growth: fast
• Hardiness: fully hardy
  
  Related to kale, broccoli, and Brussels sprouts, watercress is a peppery-tasting, leafy herb naturally found growing in gently running water forming dense mats of nutritious, edible foliage. While it prefers a moist spot in full sun, it can be grown indoors in a water-filled container to extend the season.
  
  
• Growing instructions: Sow seeds into very moist seed compost in pots or trays at 61-64°F (16-18°C). Prefers a shady position to germinate which takes approx. 1-2 weeks. Plant out into reliably moist ground, or a regularly watered windowbox, and pick regularly to ensure juvenility and to prevent premature flowering.
  
  
• Sow: April to September
  
  
• Harvest: May to November