Nasturtium is an easy-to-grow annual valued for its bright flowers, rounded leaves, and edible blooms and foliage. It thrives in full sun to partial shade and performs best in well-drained soil with moderate fertility. Rich soil often produces abundant foliage at the expense of flowers, so moderate nutrition is preferred. Nasturtiums are commonly planted in borders, containers, vegetable gardens, and hanging baskets where their trailing or mounding growth adds vibrant color. The flowers attract pollinators while the leaves help draw aphids away from nearby vegetables, making nasturtium an excellent companion plant. With minimal maintenance and regular watering during establishment, nasturtiums provide colorful blooms and edible harvests from spring until frost.

Nasturtiums are easy to grow from seed and are usually direct sown outdoors after the danger of frost has passed. Their large seeds germinate quickly when planted about one-half inch deep in well-drained soil. Soaking seeds overnight before planting may improve germination rates. Keep the soil evenly moist until seedlings emerge, which generally occurs within one to two weeks. Nasturtiums dislike root disturbance, making direct sowing the preferred method. Once seedlings are established, thin them to allow proper spacing and healthy growth throughout the season.

Plant nasturtiums in full sun to partial shade after frost danger has passed. Choose well-drained soil with only moderate fertility because overly rich soil encourages foliage instead of flowers. Sow seeds directly or transplant carefully while minimizing root disturbance. Space plants 10 to 12 inches apart depending on the variety. Water thoroughly after planting and continue providing moderate moisture while plants establish. Nasturtiums grow exceptionally well in containers, raised beds, hanging baskets, and vegetable gardens where their trailing stems create attractive displays and provide valuable companion planting benefits.

Nasturtiums require very little supplemental feeding and generally bloom best in moderately fertile soil. Adding compost before planting improves soil structure without making it excessively rich. Fertilizer is rarely necessary, and excessive nitrogen can encourage lush foliage while significantly reducing flower production. Container-grown plants may benefit from very light feeding if growth becomes weak during the season. Moderate fertility encourages abundant blooms, healthy foliage, and balanced growth. Proper nutrition allows nasturtiums to produce colorful flowers continuously while maintaining their usefulness as edible plants and companion plants in vegetable gardens.

Nasturtiums are annuals that do not survive freezing temperatures and naturally complete their life cycle each year. After frost kills the plants, remove healthy plant material and compost it unless disease is present. Allow mature seed pods to dry naturally if seed saving or natural reseeding is desired before cleaning the bed. Garden beds can then be refreshed with compost to improve soil quality for future seasonal planting. Proper cleanup helps reduce overwintering pests and diseases while preparing the landscape for healthy spring growth and another productive flowering season.

Nasturtium flowers and leaves can be harvested throughout the growing season for fresh culinary use. Regular harvesting encourages additional flowering while helping maintain an attractive appearance. Remove faded flowers if seed production is not desired, though leaving some blooms allows seeds to mature for collection. Trim damaged or overgrown stems as needed to encourage fresh growth and improve airflow. At the end of the season, collect mature seeds before removing finished plants. Consistent harvesting keeps nasturtiums productive, attractive, and flowering heavily while providing a continuous supply of edible flowers and foliage.