Leptinella squalida 'Platts Black'

Leptinella squalida 'Platts Black' is a creeping, mat-forming perennial plant with tiny, deep green, fern-like foliage. The leaves are so dark green that they appear almost black, forming a dense, weed-suppressing mat of foliage. It is often used as ground cover in rock gardens or between stepping stones.

Image of a similar Leptinella by Jan Clayton-Green, CC BY 4.0 <https://creativecommons.org/licenses/by/4.0>, via Wikimedia Commons