Rosemary Tuscan Blue
Rosmarinus officinalis 'Tuscan Blue'
Essentials
At a Glance
Plant Type
Shrub
Height
36 inches
Width
24 inches
Light
Full Sun, Partial Sun
Zones
4, 5, 6, 7, 8, 9
Water
Low
Humidity
Low to moderate
Lifespan
Perennial
Native To
Mediterranean region
Toxicity
Non-toxic to humans and pets
The Story
Plant Bio
Rosmarinus officinalis, known as Tuscan Blue, is an evergreen woody shrub with aromatic, needle-like leaves and striking blue flowers that attract pollinators, often used in culinary and ornamental gardens. This cultivar is distinguished by its vigorous growth, deep blue flower spikes, and excellent drought tolerance, making it ideal for Mediterranean-style landscapes.
Bloom Period:
Uses & Benefits:
Marketplace
Where to Buy
Shipping costs Year-round shipping Free shipping
Planting
How to Grow
- Tuck seeds or cuttings into well-draining soil
- Water regularly until established, then reduce watering
- Place in full sun for best growth
- Prune lightly after flowering to maintain shape
- Fertilize with a balanced, organic fertilizer in spring
- Mulch around base to conserve moisture
Pro Tip
Ensure excellent drainage to prevent root rot and promote healthy growth.
Keep It Thriving
Care Guide
Do
- Water deeply but infrequently 🌱
- Prune after flowering to shape
- Use organic fertilizer in spring
- Place in full sun for optimal growth
Don't
- Overwater, especially in winter ❌
- Use heavy clay soil without amendments
- Allow soil to stay soggy
- Neglect pruning
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fertilize | ||||||||||||
| Harvest | ||||||||||||
| Prune |
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
Rosemary Tuscan Blue questions
What zones can Rosemary Tuscan Blue grow in?
Rosemary Tuscan Blue 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 Rosemary Tuscan Blue deer resistant?
Not reliably. Deer may browse Rosemary Tuscan Blue, especially tender spring growth — plan on repellents or fencing where pressure is high.
When does Rosemary Tuscan Blue bloom?
Rosemary Tuscan Blue typically blooms in late spring through late fall. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Rosemary Tuscan Blue need full sun?
Rosemary Tuscan Blue does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
Is Rosemary Tuscan Blue drought tolerant?
Yes — once established (usually after the first full season), Rosemary Tuscan Blue handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.
More Rosmarinus to compare
Arp Rosemary
Rosmarinus officinalis 'Arp'
Common Rosemary
Rosmarinus officinalis 'Salem'
Rosemary Blanquita
Rosmarinus officinalis 'Blanquita'
Rosemary Furneaux Hardy
Rosmarinus officinalis 'Furneaux Hardy'
Rosemary Hill Hardy
Rosmarinus officinalis 'Hill Hardy'
Irene Rosemary
Rosmarinus officinalis 'Renzels'
Keep exploring
Explore the genus
Collections featuring this plant
Grow Rosemary Tuscan Blue 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.
