J
Vegetables
Watercress
Nasturtium officinale
A peppery leaf for wet ground, much used in soups and salads in Portugal.
- Light
- Partial shade
- Height
- 0.2–0.4 m
- Watering
- Plenty: almost daily in summer, never waterlogged
- Soil
- fertile, rich in organic matter
- Edible?
- Yes: the leaves
- How to plant
- Sow direct 0.3 cm deep; leave 10 cm between plants.
- Care
- Needs constant water: grow it in a tray of water or beside a spring. Use only clean water.
Calendar by climate
Warm coast
F
M
A
M
J
J
A
S
O
N
D
Mild Mediterranean
J
F
M
A
M
J
J
A
S
O
N
D
Southern interior
J
F
M
A
M
J
J
A
S
O
N
D
Continental interior
J
F
M
A
M
J
J
A
S
O
N
D
Cold interior and uplands
J
F
M
A
M
J
J
A
S
O
N
D
Atlantic
J
F
M
A
M
J
J
A
S
O
N
D
Canary Islands (subtropical)
J
F
M
A
M
J
J
A
S
O
N
D
SowPlantHarvestPruneFeedTreat
Dates are for growing outdoors, based on the local climate. In a greenhouse or tunnel everything comes earlier.
Feeding and doses
Mild Mediterranean
Not needed.
Pest prevention and doses
Mild Mediterranean
Not needed.
How easy to grow by climate
- Warm coastNeeds regular careToo warm a climate
- Mild MediterraneanNeeds regular careHot, dry summers
- Southern interiorDifficultExtreme summer heat
- Continental interiorNeeds regular careFrost and a short season
- Cold interior and uplandsNeeds regular careHard, long frosts
- AtlanticEasy
- Canary Islands (subtropical)Needs regular careNo winter chill
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