Mammoth Sunflower Seeds Growing Guide
• Sowing: Sow seeds 1"–2" deep directly outdoors after the last frost when soil is warm.
• Location: Full sun.
• Soil: Deep, fertile, well-drained soil with plenty of organic matter.
• Water: Keep soil evenly moist during germination and early growth; water deeply during dry periods.
• Care: Very tall variety; provide support in windy areas, space plants well, and remove spent flowers if not saving seeds. 🌻
