The Story
Plant Bio
Crocosmia are cormous perennials from South Africa, known for their sword-like leaves and arching spikes of brightly colored, funnel-shaped flowers.
A clump-forming perennial with pleated, sword-like leaves. In summer, it produces arching spikes of large, outward-facing, vibrant canary-yellow flowers. It is a sterile hybrid, so it does not self-seed.
Uses & Benefits:
Essentials
At a Glance
Plant Type
Perennial
Height
36 inches
Width
18 inches
Light
Full Sun, Partial Sun
Zones
5, 6, 7, 8, 9
Water
Moderate
Humidity
Average
Lifespan
Perennial
Native To
South Africa
Toxicity
Non-toxic to pets
Bloom period
Mid-summer – Late summer
In flower about 2 months of the year
Planting
How to Grow
- Tuck corms 4-6 inches deep in well-draining soil in early spring.
- Water generously after planting to settle soil around corms.
- Mist cuttings or newly planted corms regularly to keep soil moist.
- Fertilize with a balanced fertilizer in early spring and mid-summer.
- Stake tall flower stalks for support during peak bloom.
- Divide clumps every 3-4 years in early spring or fall.
Pro Tip
Plant corms in full sun for vibrant, long-lasting blooms and optimal growth.
Keep It Thriving
Care Guide
Do
- Water regularly during active growth 🌱
- Apply a balanced fertilizer in spring and summer
- Stake tall flower stems for support
- Divide clumps every few years
Don't
- Avoid overwatering to prevent rot ❌
- Don’t plant in shady areas; they need full sun
- Refrain from neglecting staking during heavy flowering
- Don’t disturb dormant corms unnecessarily
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Deadhead | ||||||||||||
| Divide | ||||||||||||
| Fertilize | ||||||||||||
| Harvest | ||||||||||||
| 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
Walberton's Yellow Montbretia questions
What zones can Walberton's Yellow Montbretia grow in?
Walberton's Yellow Montbretia is hardy in USDA Zones 5–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Walberton's Yellow Montbretia deer resistant?
Yes — Walberton's Yellow Montbretia is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Walberton's Yellow Montbretia bloom?
Walberton's Yellow Montbretia typically blooms in mid-summer through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Walberton's Yellow Montbretia need full sun?
Walberton's Yellow Montbretia does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
Is Walberton's Yellow Montbretia drought tolerant?
Yes — once established (usually after the first full season), Walberton's Yellow Montbretia handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.
More Crocosmia to compare
Lucifer Crocosmia
Crocosmia x crocosmiiflora 'Lucifer'
Montbretia
Crocosmia x crocosmiiflora
Masonorum Mason's Crocosmia
Crocosmia x crocosmiiflora 'Masonorum'
Carmin Brilliant Montbretia
Crocosmia x hybrida 'Carmin Brilliant'
Emily McKenzie Crocosmia Montbretia
Crocosmia x hybrida 'Emily Mckenzie'
Crocosmia 'Prince of Orange'
Crocosmia x crocosmiiflora 'Prince of Orange'
Keep exploring
Explore the genus
Hardy in your zone?
Grow Walberton's Yellow Montbretia 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.