Plant Care Basics
Grow Zone Recommendation: Rock cress grows well in USDA growing zones 4 to 8, as a perennial.
Sunlight Needs: For sunlight, rock cress grows best in sunny conditions. Full sun is best, but some shade is tolerable.
Watering Needs: Water newly planted or young rock cress plants regularly until established. Minimal water is required thereafter; just when the soil is dry.
Average Size: Fully grown rock cress can be shorter than 6 inches and up to 12 inches, depending on conditions and variety. It will grow to 1 to 2 feet wide.
Foliage Color: Beginning in April through the middle of May, rock cress will boast pink or blue flowers.
