Maximilian sunflower
Helianthus maximiliani
Essentials
At a Glance
Plant Type
Perennial
Height
96 inches
Width
36 inches
Light
Full Sun
Zones
4, 5, 6, 7, 8, 9
Water
Moderate
Humidity
Average
Lifespan
Perennial
Native To
North America
Toxicity
Non-toxic to humans and pets
The Story
Plant Bio
Tall, perennial sunflower with numerous blooms. Known for its late summer blooms that attract pollinators.
Bloom Period:
Uses & Benefits:
Marketplace
Where to Buy
Shipping costs Year-round shipping Free shipping
Planting
How to Grow
- Select a sunny location with well-draining soil.
- Tuck seeds 1/2 inch deep into soil in early spring.
- Mist cuttings regularly to maintain humidity during propagation.
- Transplant seedlings when they are sturdy, about 6 weeks after germination.
- Water weekly, ensuring soil remains moist but not waterlogged.
- Fertilize monthly with a balanced fertilizer during the growing season.
Pro Tip
Plant in groups for a striking visual impact and better wind resistance.
Keep It Thriving
Care Guide
Do
- Water consistently during dry spells 🌱
- Prune dead or damaged stems in late fall
- Apply mulch to conserve moisture and suppress weeds
Don't
- Avoid overwatering to prevent root rot ❌
- Do not disturb roots during peak flowering
- Refrain from using chemical pesticides excessively
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Divide | ||||||||||||
| Harvest | ||||||||||||
| Plant | ||||||||||||
| Spring Cleanup | ||||||||||||
| Stake | ||||||||||||
| Winter Prep |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Companion Plants
Multiply
Propagation Methods
Good to Know
Common Questions
Maximilian sunflower questions
What zones can Maximilian sunflower grow in?
Maximilian sunflower is hardy in USDA Zones 4–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Maximilian sunflower deer resistant?
Yes — Maximilian sunflower is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Maximilian sunflower bloom?
Maximilian sunflower typically blooms in late summer through early fall. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Maximilian sunflower need full sun?
Maximilian sunflower does best in full sun (6+ hours).
Is Maximilian sunflower drought tolerant?
Yes — once established (usually after the first full season), Maximilian sunflower handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.
More Helianthus to compare
Swamp Sunflower
Helianthus angustifolius 'First Light'
Narrow-Leaf Sunflower Low Down
Helianthus angustifolius 'Low Down'
Bolander's Sunflower, Serpentine Sunflower
Helianthus bolanderi
Salicifolius Sunflower Willowleaf Sunflower
Helianthus salicifolius
Table Mountain Sunflower
Helianthus annuus 'Table Mountain'
Common Sunflower
Helianthus annuus
Keep exploring
Explore the genus
Collections featuring this plant
Grow Maximilian sunflower with confidence
See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.
