Nasturtium Seeds,
Tip Top Alaska Salmon

Sow seeds in the spring after the danger of the last frost has passed. For areas with cooler climates, seeds can be started indoors 4 weeks before the last frost and transplanted carefully. Direct sowing is preferred as nasturtiums dislike being transplanted. Ensure soil temperatures are between 55-65 F for ideal germination. Learn about your area's hardiness zones and first/last frost dates in our blog post 'Our Experts Answer Questions, Share Resources'.

Soak seeds in warm water overnight before planting to soften the seed coat and encourage faster germination. Sow seeds 1/2-1 inch deep in well-draining soil, spacing plants 8-12 inches apart to allow for proper growth and airflow. Choose a location with full sun for the best flower production, but plants will tolerate some light shade. Do not plant in overly rich soil, as this will encourage foliage growth instead of flowers. Nasturtium seeds typically germinate within 7-14 days.

Water plants moderately but sparingly once they are established, as nasturtiums are drought-tolerant and sensitive to overwatering. Deadhead spent blooms to encourage continuous flowering throughout the season. Although nasturtiums are generally pest-resistant, they can occasionally attract aphids, which can be managed with insecticidal soap or a strong spray of water.

• Nasturtiums will often reseed, but to save seeds, allow the flowers to mature and let the petals fall to the ground.
• Collect the seeds from the plant before they fall.
• When the seeds are dry, label and store them in a cool, dark, dry place over the winter.