Nasturtium Seeds,
Purple Emperor

Direct sow seeds outdoors in spring after the last frost date, when soil temperatures are consistently above 55 F. For a head start, start seeds indoors 4 weeks before the last frost date, and transplant them outdoors after hardening off. If you're unsure of your last frost date, consult our blog post 'Our Experts Answer Questions, Share Resources'.

Sow seeds 1/2-1 inch deep and space them 8–12 inches apart directly in the garden. To speed up germination, soak seeds overnight before planting. Germination takes 7–14 days. If starting indoors, use biodegradable pots to prevent root disturbance when transplanting. Choose a sunny location with well-draining soil for planting outdoors, as nasturtiums prefer poor to moderately fertile soil to encourage blooms.

Water sparingly, allowing the soil to dry slightly between watering, as overwatering can cause root rot or excessive foliage. Deadhead spent flowers for continuous blooming throughout the growing season. Avoid fertilizing, as nutrient-rich soil can reduce flower production. While nasturtiums are generally pest-resistant, they can attract aphids. If needed, treat infestations with a strong spray of water or neem oil.

• 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.