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Nasturtium officinale
Growing calendar
Typical timing for central Japan (Kanto region). Shift it for your own climate, and record your actual dates.
JanFebMarAprMayJunJulAugSepOctNovDec
Sow / plantGrowingHarvest
Guides
- How to Root Watercress from a Supermarket Bunch
- How to Grow Watercress in a Pot Standing in Water
- When and How to Cut Watercress So It Keeps Regrowing
- Watercress Through the Year: What to Do in Each Season
- Watercress Problems: Why You Must Never Pick It from the Wild
Pests and diseases (3)
Problems recorded for this plant, most serious first.
Aphids
MajorPest
Small green or black insects cluster on shoot tips and leaf undersides, crinkling the leaves and stopping growth. The honeydew they excrete supports sooty mold that blackens the foliage.
Slugs
MajorPest
Irregular holes are chewed in leaves and fruit with glistening slime trails nearby. By day they hide under pots and bricks or in dead leaves at the base of the plant.
Bolting
CommonDisorder
A flower stalk rises from the center of the plant and the leaves turn tough and stringy, spoiling eating quality. Heading vegetables run to seed without ever forming a head.
