Green Grass Grove
Connecting specimen records, habitat data, and the living archive.
Watercress / Aqua Large Leaf
Nasturtium officinaleWatercress / Aqua Large Leaf is preserved as a distinct large-leaf watercress for production, seed or propagule preservation, harvest, soil improvement, habitat, and public education.
Botanical Overview
Watercress / Aqua Large Leaf is preserved as a distinct large-leaf watercress for production, seed or propagule preservation, harvest, soil improvement, habitat, and public education.
Why We Feature This Specimen
Watercress / Aqua Large Leaf connects North Florida crop performance with accession identity, harvest stage, seed or clone preservation, and ecological function.
Climate & Protection
Cold protection trigger: Begin cold protection below 45 °F. The cold-damage threshold is the lower temperature where injury becomes likely, not the recommended waiting point.
Sun / Light: Full sun for most legumes and fruiting vines; partial shade may improve tender leafy greens during intense heat.
Watercress / Aqua Large Leaf requires a contained clean-water system. Prevent release into natural waterways, monitor mosquitoes and hitchhikers, and separate food production from ornamental or wastewater systems.
Planting & Seasonal Guide
Starting & Germination Methods
Seed Sowing
Seed sowing is the umbrella operational method for placing botanical seed into a germination environment. It includes selection of containers or beds, medium, depth, spacing, moisture, temperature, light,…
Open Full Method ↗Watercress / Aqua Large Leaf requires a contained clean-water system. Prevent release into natural waterways, monitor mosquitoes and hitchhikers, and separate food production from ornamental or wastewater systems.
Spacing: Allow at least the mature spread (spreading) plus airflow, trellis, cultivation, or water-surface access.
Planting Depth: Sow seed or set crowns, corms, roots, and divisions at crop-appropriate depth without burying crowns or trapping water.
Pollination: Usually not relevant for biomass/leaf harvest. Record flowering only for seed or ecology notes.
Water, Soil & Nutrition
💧 Water & Moisture
Maintain clean, cool, oxygenated water or continuously moist soil with reliable flow or frequent renewal. Do not use stagnant, contaminated, or runoff-impacted water for food production.
Consistent moisture matched to crop stage and root biology.
Use airflow, early irrigation, trellising, and sanitation to reduce foliar disease, pod or fruit rot, and postharvest decline.
🌱 Soil & Growing Media
Preferred pH: 5.80 to 7.00
↘ Drainage & Root-Zone Behavior
✦ Nutrition & Deficiency Checks
Use low to moderate nutrient concentrations and monitor water quality. Excess nutrients encourage algae, weak growth, and microbial contamination.
Check pH, nodulation, roots, irrigation, nematodes, and crop stage before diagnosing nutrient deficiency.
Growth, Maintenance & Harvest
Maintenance & Pruning
Use crop-specific trellising, mowing, pinching, leaf harvest, vine training, or sanitary removal. Preserve enough foliage and root reserve for regrowth.
Harvest or Observation
Harvest only from controlled potable-water systems, rinse thoroughly, and retain enough material for accession backup.
Storage & Preservation
Cool fresh greens promptly; cure or dry seed, pods, roots, corms, and propagules to crop-appropriate conditions with full labels.
Harvestable Plant Parts & Uses
Harvest only from controlled potable-water systems, rinse thoroughly, and retain enough material for accession backup.
Propagation, Cloning & Tissue Culture
Propagation Methods
Division
Division is the umbrella vegetative method of separating an established plant into two or more self-supporting units, each with the buds, shoots, roots, and storage tissues required for…
Open Full Method ↗Aquatic Plant Division
Aquatic plant division is the clonal separation of rooted or free-growing aquatic plants into viable units containing the species-appropriate crown, rhizome, shoot, root, or bud. It is an…
Open Full Method ↗Aquaponics, Hydroponics & Aeroponics
Aquaponics
Use only with adequate oxygen, mineral balance, sanitation, species containment, and verified edible-crop status.
Hydroponics
- Target pH5.8–6.5
- Target EC1.0–2.2 mS/cm
Use only where root form, crop duration, support, food safety, and containment are compatible. Universal fertilizer recipes are omitted.
Aeroponics
No profile-specific operating notes have been recorded.
Pests, Diseases, Safety & Toxicology
Inspect watercress for aphids, caterpillars, slugs, snails, aquatic insects, and grazing wildlife. Food blocks require clean handling and exclusion of animal contamination.
Monitor for damping-off, root and stem rots, leaf spots, and decline caused by warm, stagnant, low-oxygen water. Remove decaying tissues promptly.
Maintain this cultivar in a contained clean-water system, prevent escape to natural waterways, harvest above contaminated splash zones, sanitize tools, and verify water quality before edible use.
Watercress / Aqua Large Leaf most often fails from wrong seasonal timing, poor drainage or water quality, weak identification, missed harvest, or lost seed/propagule records.
Watercress can accumulate pathogens, parasites, metals, pesticides, or excess nutrients from contaminated water. Edible use requires verified identity, clean water, and strict sanitation.
Aquatic plants can accumulate pathogens, metals, pesticides, or excess nutrients. Food use requires verified species, clean water, and strict sanitation. Follow pesticide labels, preharvest intervals, clean-water standards, and crop-specific processing.