True Blue Hosta
Hosta plantaginea 'True Blue'
Essentials
At a Glance
Plant Type
Perennial
Height
24 inches
Width
48 inches
Light
Partial Sun, Shade
Zones
4, 5, 6, 7, 8, 9
Water
Moderate
Humidity
Average
Lifespan
Perennial
Native To
Cultivated origin
Toxicity
Toxic to dogs, cats, and horses
The Story
Plant Bio
True Blue is known for its striking blue foliage which stands out in shady gardens. This cultivar is particularly noted for its intense blue color, which can sometimes be hard to find in hostas.
Bloom Period:
Uses & Benefits:
Marketplace
Where to Buy
Shipping costs Year-round shipping Free shipping
Planting
How to Grow
- Tuck well-draining loam soil around roots for optimal growth.
- Water regularly to keep soil moist but not waterlogged.
- Mist cuttings lightly to encourage root development, lasting 2-3 weeks.
- Place in partial shade to protect from harsh afternoon sun.
- Apply organic fertilizer in early spring for healthy foliage.
- Mulch around plants to retain moisture and suppress weeds.
Pro Tip
Use shaded areas to prevent leaf scorch and promote lush growth.
Keep It Thriving
Care Guide
Do
- Provide consistent moisture 🌱
- Mulch to conserve soil moisture
- Use organic fertilizers in spring
- Monitor for pests regularly
Don't
- Avoid overwatering to prevent root rot ❌
- Do not expose to direct harsh afternoon sun ❌
- Skip fertilizing during dormant periods ❌
- Don't neglect pest inspections ❌
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Divide | ||||||||||||
| Fertilize | ||||||||||||
| Pest Check | ||||||||||||
| 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
True Blue Hosta questions
What zones can True Blue Hosta grow in?
True Blue Hosta 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 True Blue Hosta deer resistant?
Not reliably. Deer may browse True Blue Hosta, especially tender spring growth — plan on repellents or fencing where pressure is high.
When does True Blue Hosta bloom?
True Blue Hosta 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 True Blue Hosta need full sun?
True Blue Hosta does best in part shade.
More Hosta to compare
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Hosta cordifolia 'Blue Mouse Ears'
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Hosta fortunei 'June'
Fire Island Hosta
Hosta fortunei 'Fire Island'
Patriot Plantain Lily
Hosta plantaginea 'Patriot'
Hosta Goldrush
Hosta x hybrida 'Goldrush'
Empress Wu Hosta
Hosta plantaginea 'Empress Wu'
Keep exploring
Explore the genus
Collections featuring this plant
Grow True Blue Hosta 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.
