(c) Antonio W. Salas, some rights reserved (CC BY)
iNaturalist
Nasturtium Plant Care
Tropaeolum majus L.
This plant is known for its unique rounded leaves that resemble water lily pads and its vibrant orange, red, or yellow flowers. Originating from the Andes mountains in South America, Tropaeolum majus is highly sought after by plant collectors for its edible flowers and leaves, making it both visually appealing and functional in the garden.
Every 4–7 days
Full sun to partial shade
50–75°F
40–60%
What Is the Nasturtium?
Nasturtium (Tropaeolum majus) belongs to the Tropaeolaceae family within the Tropaeolum genus. Nasturtium is native to South America. Nasturtium is also known as Garden nasturtium, Indian cress.
Nasturtium displays a trailing, climbing vine growth habit, reaching up to 1 inches tall with a spread of approximately 1 inches. Nasturtium produces brightly colored spurred flowers in shades of red, orange, or yellow.
Leaf size: approximately 0 inches.
How Often Should You Water a Nasturtium?
Tropaeolum majus requires watering every 4–7 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.
Watering Frequency
Every 4–7 days
Let soil partially dry between waterings
What Light Does the Nasturtium Need?
Nasturtium thrives in full sun to partial shade light conditions. The optimal light range is 0–0 lux. Avoid placing Nasturtium in direct, harsh sunlight for extended periods, as this can scorch the foliage.
Light Requirement
Full sun to partial shade
0–0 lux
What Temperature and Humidity Does the Nasturtium Prefer?
Tropaeolum majus grows best at temperatures between 50°F and 75°F. Nasturtium prefers humidity levels of 40–60%.
Temperature
50–75°F
Humidity
40–60%
What Soil Mix Works Best for a Nasturtium?
Well-draining, fertile soil with added compost for nutrients. Good drainage is essential for Nasturtium to prevent waterlogging, which leads to root rot and fungal issues.
How Do You Repot a Nasturtium?
Repot annually in spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.
How Do You Propagate a Nasturtium?
Nasturtium can be propagated through seeds.
Fertilizing
Every 2 months
During the growing season
Is the Nasturtium Toxic to Pets and Children?
Non-Toxic
Non-toxic to humans and pets
What Pests and Diseases Affect the Nasturtium?
Nasturtium is susceptible to aphids, whiteflies, caterpillars. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.
What USDA Hardiness Zone Does the Nasturtium Need?
Nasturtium grows outdoors in USDA Zone 9b – 11b. Native to South America, Nasturtium is adapted to warm climates. In cooler regions, grow Nasturtium as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 9b – 11b
Keep exploring plants
Nasturtium is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.
It belongs to the Tropaeolum genus — compare its care with other Tropaeolum species on PlantoScan.
Nasturtium tolerates low-light rooms and shaded spots — browse the full list of low-light plants.
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