Mammoth Garden Mum
Chrysanthemum x morifolium 'Hardy Mammoth Mum Collection'
Not currently listed at our partner nurseries.
Essentials
At a Glance
Plant Type
Perennial
Height
36 inches
Width
42 inches
Light
Full Sun, Partial Sun
Zones
4, 5, 6, 7, 8, 9
Water
Moderate
Humidity
Average
Lifespan
Perennial
Native To
Cultivated varieties
Toxicity
Toxic to pets
The Story
Plant Bio
Hardy perennial variety with large blooms that are resistant to frost. Known for its durability and vibrant coloration throughout the fall.
Bloom Period:
Uses & Benefits:
Marketplace
Where to Buy
We couldn't find this plant listed online right now.
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Planting
How to Grow
- Tuck seeds or cuttings into well-drained soil in early spring.
- Water consistently to keep soil moist but not soggy.
- Mist cuttings regularly to maintain humidity during propagation.
- Provide full sun for optimal blooms and growth.
- Fertilize monthly with a balanced fertilizer during active growing season.
- Pinch back stems to encourage bushier growth after seedlings establish.
Pro Tip
Use organic compost to enrich soil and promote vigorous flowering.
Keep It Thriving
Care Guide
Do
- Water deeply once a week during dry spells 🌱
- Prune dead or leggy stems after flowering
- Apply a balanced fertilizer monthly during spring and summer
- Mulch around plants to retain moisture and suppress weeds
- Monitor regularly for pests and diseases
Don't
- Avoid overwatering which can cause root rot ❌
- Don’t prune in late fall or winter
- Skip fertilizing during dormancy
- Don’t plant in waterlogged soil
- Avoid excessive fertilization which can reduce flowering
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Deadhead | ||||||||||||
| Divide | ||||||||||||
| Fertilize | ||||||||||||
| Pinch | ||||||||||||
| Plant | ||||||||||||
| Spring Cleanup | ||||||||||||
| 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
Mammoth Garden Mum questions
What zones can Mammoth Garden Mum grow in?
Mammoth Garden Mum 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 Mammoth Garden Mum deer resistant?
Yes — Mammoth Garden Mum is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Mammoth Garden Mum bloom?
Mammoth Garden Mum typically blooms in late summer through late fall. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Mammoth Garden Mum need full sun?
Mammoth Garden Mum does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
More Chrysanthemum to compare
Shasta Daisy
Chrysanthemum leucanthemum 'Becky'
Garden Mum
Chrysanthemum x hybrida 'Christy'
Shasta Daisy
Chrysanthemum leucanthemum 'May Queen'
Mammoth Chrysanthemum
Chrysanthemum x morifolium 'Mammoth'
Small Wonder Chrysanthemum
Chrysanthemum x morifolium 'Small Wonder'
Chrysanthemum x morifolium Red
Chrysanthemum x morifolium 'Red'
Keep exploring
Explore the genus
Collections featuring this plant
Grow Mammoth Garden Mum 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.
