annual flower
Mammoth sunflower
Direct sow in full sun after frost.
Growing Profile
- Hardiness
- Zones 3a-11a
- Sun
- full
- Soil
- clay, loam, sandy
- Water
- medium
- Goals
- Pollinators & wildlife, Curb appeal & color
Harvest & Use
late summer seedheads
Useful search phrase: Mammoth sunflower seeds.
Plant Relationships
Plant guild Medium
Repeated pollinator-friendly blooms work better as a patch than as isolated one-off plants.