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Growing Nasturtium

Growing Nasturtium

Jewel of Africa


Attractive plants for garden beds, pots, and mixed containers. Trailing types are ideal for window boxes, hanging baskets, and on trellises. Some varieties have variegated leaves mottled with white spots. Large, easy-to-plant seeds should be sown ½ to 1 inch deep outdoors after the last frost in spring. Can soak seed overnight in warm water to improve germination. For an early start, sow indoors 4 to 6 weeks before the last spring frost.


Easy-to-grow plants for moist, well-drained sites in full sun to part shade. Can cut back plants if they overgrow mixed containers or support structures.

Fertilizer Recommendations

Use low rates of Algoflash Flowering Plant 4-6-7 Liquid Fertilizer (51087), Neptune Fish & Seaweed Fertilizer 2-3-1 (51221), or Osmocote 14-14-14 (51173).

Alternative Products

Other flowering annuals are Bonanza Mix Improved Marigolds (06789) and Orange Profusion Hybrid Zinnia (08118). A trailing annual option is Candy Showers Mix Snapdragon (05113).

Complimentary Products

Low to moderate fertility needs and appreciates occasional fertilization. Use new Azaguard Insecticide/Repellent (50008) or Safer Insecticidal Soap (50424) to organically control aphids.

Product Recommendations

Grow mounded or trailing types in Al's Flower Pouch (53200) to provide a vertical effect. Natural Jute Twine (52886) can be used to tie trailing forms to trellises.

Nasturtium Facts

Few problems, though aphids can attack plants. Often used in companion planting to deter insect pests from vegetables, and can be used as a trap crop to attract aphids. For trap cropping, cut back or remove severely infested plants or treat with a pesticide. Flowers and leaves and are edible, with a spicy mustard flavor. Often reseeds in gardens.

Growing Tips