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| Category: Perennial |
| Family: Asteraceae (Sunflowers) |
| Origin: North America |
| Flower Color: Yellow |
| Bloomtime: Fall |
| Height: 6-8 feet |
| Width: 4-5 feet |
| Exposure: Full Sun |
| Irrigation (H2O Info): Medium Water Needs |
| Winter Hardiness: < 0 °F |
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Helianthus maximiliana (Maximilian Sunflower) - One of our north American native sunflowers. This plant is a wonderful large surprise for the back of the border where there is room for this beauty. From a basal cluster of foliage emerge 6 to 8 feet tall stems bearing 1 to 3 inch long lance-shaped and slightly-undulating green leaves and terminating in 3" to 4" wide bright yellow sunflowers in fall. Plant is full sun to light shade and give little to regular irrigation. The more you water the bigger it gets. Cut to the ground in late fall or early winter. Hardy into zone 4 (<-20). We received this plant from John Greenlee who received it from southern designer Ryan Gainey and grew this fun plant from 2002 to 2005. Though we no longer grow it we have plants in the nursery garden in bloom each fall.
This information about Helianthus maximiliana displayed is based on research conducted in our horticultural library and from reliable online resources. We also will relate observations made about it as it grows in our nursery gardens and other gardens we have visited, as well how the crops have performed in containers in our nursery field. We will also incorporate comments that we receive from others and we welcome hearing from anyone with additional information, particularly if they can share any cultural information that would aid others in growing it.
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