Rincon Mountain Rockcress

Pennellia tricornuta

Native to:
United States
Rincon Mountain Rockcress

Jim Malusa from U.S. Forest Service files.

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Brassicaceae
Genus:
Pennellia
Species:
Pennellia tricornuta
USDA Symbol:
ARTR6

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Forb/herb
Height:
60 cm
Light Requirements:
Full Sun
Drought Tolerance:
Medium
Bloom Months:
apr,may,jun
Bloom Colors:
white

Soil Requirements

Soil Type:
rocky, well-drained, nutrient-poor soil
pH:
6.0 - 7.5 (slightly acidic to neutral)
Drainage:
excellent drainage required
Moisture:
dry to moderate
Notes:
native to arid mountainous regions

Propagation & Germination

Stratification:
Cold/moist stratification required — 30–60 days

The above propagation data sourced from Claude AI

Pre-treatment: Cold-moist stratification for 30 days at 1–5°C (34–41°F).

Source: Claude AI