Maximilian sunflower
Maximilian sunflower (Helianthus maximiliani) towers over most prairie forbs and blooms from August into October, when pollinators are stocking up for winter. Its stout stems stand through snow, and its seed heads feed quail, pheasants, and songbirds all winter.
Why landowners plant maximilian sunflower
- Late-season nectar for monarchs and bumble bee queens.
- Heavy seed production that feeds upland birds into winter.
- Tall rigid stems provide winter structure and snow catch.
- Establishes quickly and blooms early in the stand's life.
Site fit
Mesic to dry-mesic soils, field edges, and swale shoulders. It spreads by rhizome and can dominate rich moist ground, so use restrained rates on fertile sites and heavier rates where cover is the goal.
Establishment
Light stratification helps; dormant seeding is easiest. Plant shallow. Frequently blooms in year two, with patch expansion by year three.
Management
Spot-mow to control spread if it crowds out lower forbs. Very fire-tolerant. Grazing pressure knocks it back quickly since livestock favor it.
CRP practice fit
Late bloom-period species in mesic pollinator mixes.
Winter seed and structure in quail buffers.
Tall forb component of diverse grass mixes.
Featured mixes with maximilian sunflower
Pairs well with
Big bluestem · Stiff goldenrod · New England aster · Ashy sunflower
Frequently asked questions
On rich, moist ground it spreads by rhizome and can crowd shorter forbs. Keep the rate near 0.05 PLS pounds per acre in high-diversity mixes; go heavier only when winter cover is the priority.
Monarchs and bumble bees on the flowers, quail, pheasants, and songbirds on the seed, and upland birds in the standing winter stems.