trefle.io · Taken Sep 14, 2020 by Ezio Caliari (cc-by-sa)
Asteraceae
Maximilian's sunflower
Helianthus maximiliani
Also known as Helianthus maximiliani var. asperrimus, Maximilian sunflower, Michaelmas daisy, Helianthus maximiliani var. paniculata
Flowering Plants · Native Plants · Native · Perennial · Sunflower · Prairie · Pollinator · Yellow Flowers · Drought Tolerant · Tall · Wildlife · Fall Blooming
Maximilian's sunflower is a vigorous native perennial that produces masses of bright yellow daisy-like flowers from late summer through fall on tall stems up to 10 feet. Plant it in full sun with well-drained soil and water during dry spells; once established it is quite drought tolerant and needs little supplemental care. It spreads by rhizomes to form bold prairie-style drifts and is an outstanding pollinator and songbird plant.
Growing conditions
The details behind the basics
- Daily light
- 6 hours
- Watering
- Water deeply to encourage deep root growth, then allow soil to dry between waterings · Every 10-14 days
- Maintenance
- Low
- Soil
- loam
- Soil pH
- 6–8
- Temperature
- -25°F to 95°F
- Cycle
- Perennial
- Propagation
- Seed
Hardiness
USDA 4b-9b
Form & growth
Mature size and habit
- Mature height
- 20 ft – 40 ft
- Spread
- 20 ft
- Spacing
- 36 in apart
- Growth rate
- Fast
- Root depth
- Medium
- Flowers
- Yellow
- Foliage
- Green · Coarse
Ecology & origin
Where it belongs and what it brings
- Native to
- Alabama, Alberta, Arkansas, British Columbia, California, Colorado, Connecticut, Delaware, District Of Columbia, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Maine, Manitoba, Maryland, Masachusettes, Mexico Northeast
- Attracts
- Bees, Butterflies, Birds
Sources: trefle, usda
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