Zinnia Seeds,
Takii's Choice Mix

Start seeds indoors about 4 weeks before the last frost or directly sow outdoors once the danger of frost has passed. Zinnias prefer soil temperatures above 70 F for optimal germination, so it’s important not to plant them too early. If you’re not sure how to find your first and last frost dates, consult our blog post 'Our Experts Answer Questions, Share Resources.'

Sow seeds 1/4 inch deep, keeping a spacing of 9-12 inches between plants. Maintain moist soil until germination happens, typically in 4-6 days. Proper spacing is important to allow good air circulation and prevent fungal diseases. If starting indoors, use biodegradable pots or other means to minimize root disturbance when transplanting​.

Plant in full sun for best results, and water regularly, especially during dry periods. Zinnias are drought-tolerant but benefit from consistent moisture for optimal blooming. Light fertilization throughout the season enhances growth. Mulching helps retain soil moisture and minimizes weed competition.

• Allow the flowerhead containing the seeds to mature and dry on the plant.
• Clip off the flowerhead and place it in a paper bag or other container.
• Working over the top of another clean, opened container, rub the flowerheads between the palms to break them apart.
• The seeds can be separated from the chaff by first screening and then winnowing.
• Store in a cool, dry, dark place over winter.