Rock Cress
Aubrieta deltoidea
Not currently listed at our partner nurseries.
Essentials
At a Glance
Plant Type
Groundcover
Height
4 inches
Width
12 inches
Light
Full Sun, Partial Sun
Zones
4, 5, 6, 7, 8
Water
Moderate
Humidity
Low to moderate
Lifespan
Perennial
Native To
Mediterranean region
Toxicity
Non-toxic
The Story
Plant Bio
Aubrieta deltoidea, commonly known as rock cress, is a low-growing perennial that forms mats of foliage and produces vibrant flower clusters. This species is particularly valued for its early spring bloom and ability to thrive in rocky, well-drained soils.
Bloom Period:
Uses & Benefits:
Marketplace
Where to Buy
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Planting
How to Grow
- Tuck seeds into well-drained soil in early spring or fall.
- Mist cuttings lightly to encourage root development over 4-6 weeks.
- Transplant seedlings when they are strong enough to handle.
- Ensure plants receive full sun for optimal flowering.
- Water regularly but avoid waterlogging to prevent root rot.
- Apply a balanced fertilizer in early spring to promote growth.
Pro Tip
Use well-draining soil and full sun to encourage vibrant blooms and healthy plants.
Keep It Thriving
Care Guide
Do
- Water deeply during dry spells 🌱
- Prune after flowering to maintain shape
- Fertilize lightly in spring
Don't
- Avoid overwatering to prevent root rot ❌
- Do not disturb roots during flowering
- Refrain from excessive fertilizing
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Plant | ||||||||||||
| 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
Rock Cress questions
What zones can Rock Cress grow in?
Rock Cress is hardy in USDA Zones 4–8. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Rock Cress deer resistant?
Yes — Rock Cress is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Rock Cress bloom?
Rock Cress typically blooms in early spring through mid-spring. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Rock Cress need full sun?
Rock Cress does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
Is Rock Cress drought tolerant?
Yes — once established (usually after the first full season), Rock Cress handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.
Keep exploring
Explore the genus
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Grow Rock Cress 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.
