Aubrieta cultorum Seeds | Purple Rock Cress
LATIN NAME: Aubrieta cultorum
COMMON NAME: Purple Rock Cress
Plant Profile
Purple Rock Cress (Aubrieta cultorum) is a low, mat-forming evergreen perennial of the cabbage family (Brassicaceae), derived from species native to the mountains of southern Europe and the Near East. It spreads into dense cushions 10-15 cm high, smothered in spring by masses of small, four-petalled flowers in purple, violet, pink or lilac. It is a classic plant for rock gardens, walls and sunny, well-drained edges.
Science & Biotechnology
Research touching on Aubrieta cultorum ranges from the botany of the Aubrieta group to practical horticulture, including seed handling, propagation and the selection of superior forms. This long breeding history has made it a frequently referenced example in horticultural literature discussing how sustained cultivar selection can transform a modest wild alpine species into a garden staple. Interest from collectors and breeders has never lapsed, and good seed continues to circulate.
Uses & Benefits
Beyond its ornamental appeal, Purple Rock Cress has the practical versatility that makes a plant worth growing from seed year after year. Its tolerance of poor, well-drained soil and exposed positions makes it a practical, low-water choice for challenging garden spots where richer soil plants would struggle. Once it has settled, the workload drops to almost nothing.
Aubrieta is a pure ornamental, cherished for carpets of spring flowers over walls and rockeries, with no significant medicinal record.
Growing from Seed
Purple Rock Cress is one of those generous plants that come along well from seed. Sow seed onto surface of a loose, gritty, well-drained mix without covering it deeply, since light supports germination, and keep it lightly moist until seedlings establish. Full sun suits this hardy alpine hybrid well, and once established it requires very little ongoing care, rewarding minimal effort with a spectacular, reliable spring flower display. Use a loose, well-drained seed compost, sow evenly over the surface and cover lightly, and keep everything evenly moist in full sun. Grow the youngsters on steadily in pots until well rooted, then move them to their final positions.
Our Take
Purple Rock Cress settles in quickly once it finds its footing. Few garden plants carry such a documented history of use as this one does. Given full sun and free drainage, it asks for little routine attention.
Related Reading
If Purple Rock Cress appeals to you, these related plants are worth a look: