Royal Blue Iochroma
Iochroma cyanea 'Royal Blue'
Not currently listed at our partner nurseries.
Essentials
At a Glance
Plant Type
Shrub
Height
72 inches
Width
60 inches
Light
Full Sun, Partial Sun
Zones
8, 9
Water
Moderate
Humidity
High
Lifespan
Perennial
Native To
South America
Toxicity
All parts are poisonous
The Story
Plant Bio
This cultivar features vibrant blue flowers, adding decorative appeal to gardens. Notable for its deep blue flowers, which are more intense than many other Iochroma varieties.
Bloom Period:
Uses & Benefits:
Marketplace
Where to Buy
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Planting
How to Grow
- Tuck seeds into moist soil and lightly cover with soil, then water thoroughly.
- Mist cuttings regularly to maintain humidity and encourage rooting.
- Transplant seedlings when they have at least two sets of true leaves, after 6 weeks.
- Prune to shape after flowering to promote bushiness and remove dead branches.
- Apply organic compost around the base in early spring to boost growth.
- Mulch around the plant to retain moisture and suppress weeds.
Pro Tip
Use well-draining soil and provide full sun for vibrant blue blooms.
Keep It Thriving
Care Guide
Do
- Water regularly to keep soil moist but not waterlogged 🌱
- Prune after flowering to maintain shape and health
- Fertilize monthly with a balanced fertilizer during growing season
Don't
- Avoid overwatering which can lead to root rot ❌
- Don’t expose to frost; bring indoors in colder climates
- Never neglect pruning, as it encourages dense growth
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fertilize | ||||||||||||
| Pest Check | ||||||||||||
| Plant | ||||||||||||
| Prune | ||||||||||||
| 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
Royal Blue Iochroma questions
What zones can Royal Blue Iochroma grow in?
Royal Blue Iochroma is hardy in USDA Zones 8–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Royal Blue Iochroma deer resistant?
Not reliably. Deer may browse Royal Blue Iochroma, especially tender spring growth — plan on repellents or fencing where pressure is high.
When does Royal Blue Iochroma bloom?
Royal Blue Iochroma 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 Royal Blue Iochroma need full sun?
Royal Blue Iochroma does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
More Iochroma to compare
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Explore the genus
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Grow Royal Blue Iochroma 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.
