Scientific: Tropaeolum majus
Common: Garden nasturtium
Family: Tropaeolaceae
Origin: Chile and Argentina

Pronounciation: Tro-pa-e-OL-um MA-jus

Hardiness zones
Sunset
1-14 and 18-24 as an annual, 15-17 as perennial
USDA All

Landscape Use: Cool season garden accent bedding plant, edible and aromatic gardens, ground cover, seaside bank cover, cut flower.

Form & Character: Prostrate and spreading, succulent, round

Growth Habit: Cool or warm season annual to short-lived perennial depending on location, moderate to vigorously spreading to 6 feet depending on availability of water.

Foliage/Texture: Alternate, orbicular and reniform on distinct succulent petioles; medium coarse texture.

Flowers & Fruits: Solitary, long spurred axillary single or double flower on long peduncles often hidden below foliage in moist soils, colors ranging from white, yellow, orange to red and maroon; fruit a 3 lobed, wrinkled nutlet.

Seasonal Color: Winter flowers

Temperature: Prefers 35o to 85oF.

Light: Full sun to partial shade

Soil: Tolerant

Watering: Some drought will enhance presentation of flowers and slow vegetative growth.

Pruning: None

Propagation: Sow seed in fall for winter and spring bloom. Propagate double flower varieties vegetatively via cutting.

Disease and pests: None, though in coastal California, nasturtium plant cover makes an ideal habitat for Helix aspersa, the dreaded European brown garden snail.

Additional comments: Garden nasturtiums are a bright and cheery, informal and somewhat unruly winter annual for Phoenix gardens. Young leaves make a nice peppery garnish for green salads. Several cultivated varieties of double flowers and dwarf habit are available.