Green roofs are a total win-win: they boost your home’s energy efficiency and create a beautiful bridge between modern architecture and the natural world. If you’re looking to turn your rooftop into a living oasis, we’ve rounded up the nine most popular plants for green roofing—plus our favorite “insider tip” plant to round out the list.
[[pflanzen]]
++Stonecrop (Sedum)
Even in the harshest conditions, this little survivalist creates stunning floral carpets. These succulents feature fleshy, glossy leaves that look great year-round. Depending on the variety, Stonecrop blooms in shades of white, pink, or red between June and August, becoming a major hotspot for bees and butterflies. It’s incredibly heat-resistant, handles droughts like a pro, and can withstand freezing winter temperatures without breaking a sweat.
++Hens and Chicks (Sempervivum)
Where other plants struggle to survive, the evergreen Hens and Chicks thrives. Fun fact: Charlemagne once decreed that every home should have these on the roof because their moisture-retaining properties helped make straw and thatch roofs more fire-resistant! Their tightly packed, rosette-shaped leaves are designed to keep evaporation to a minimum. During the summer, they show off with lovely white, pink, or purple blossoms.
++Viper’s Bugloss (Echium vulgare)
This hardy native plant grows between 15 and 30 inches tall and loves dry, sunny, low-nutrient soil. It’s a biennial, but don’t worry about replanting—it self-seeds so reliably that it will maintain its own population on your roof. You’ll see a low-growing leaf rosette in the first year, followed by tall stems topped with brilliant blue flower spikes in the second year. It’s an absolute magnet for local pollinators.
++Mouse-Ear Hawkweed (Hieracium pilosella)
Reaching heights of just 2 to 12 inches, this plant is a perfect fit for rooftop gardens. It handles intense sun and bone-dry spells just as easily as it does a deep freeze. In extreme weather, it actually rolls up its leaves to show their light-colored, reflective undersides to stay cool. From May to September, you’ll enjoy cheerful yellow flowers that often sport a hint of red on the edges.
++Dwarf Iris (Iris pumila)
The Dwarf Iris brings a touch of elegance with its fragrant, crown-like blooms in blue or deep violet. Its signature sword-shaped leaves usually grow taller than the flower stems themselves. Since this variety only grows about 4 to 6 inches tall and naturally thrives on rocky, dry slopes, it is incredibly resilient and drought-tolerant—making it a tough-as-nails choice for a roof.
++Bigroot Geranium (Geranium macrorrhizum)
This semi-evergreen plant creates thick mats of foliage that get covered in white, pink, or purple flowers from May through July. The blooms are packed with nectar, so expect plenty of visits from bees. It also has a wonderful, spicy-aromatic scent. Since it handles partial shade better than most, it’s a go-to choice for roofs that don’t get full, direct sun all day.
++Sheep’s Sorrel (Rumex acetosella)
If you have a spot with full sun and poor soil, Sheep’s Sorrel will feel right at home. It forms dense patches and is easily recognized by its reddish-tinted flower spikes that reach about 12 inches high. It’s a great choice for eco-conscious gardeners, as it serves as a vital food source for several species of beautiful moths.
++Common Yarrow (Achillea millefolium)
Low-maintenance and drought-tolerant, Yarrow is a classic for a reason. Depending on the conditions, these bright white flowers can reach up to 24 inches tall. Its soft, feathery leaves give it a delicate, airy look, but don’t let that fool you—it’s completely winter-hardy and spreads easily on its own via seeds and runners.
++Common Thyme (Thymus vulgaris)
Who says a green roof can’t be a kitchen garden too? This aromatic herb forms woody, low-growing mats about 4 to 15 inches high. From May to October, this popular herb produces tiny pink or purple flowers that smell amazing and are a favorite for honeybees and bumblebees.
%%Basket of Gold (Alyssum saxatile)
Our “secret tip” for a stunning roof is Basket of Gold. This perennial loves dry soil and full sun. It’s totally winter-hardy and forms dense cushions of evergreen foliage. By April, the leaves practically disappear under a sea of vibrant yellow flowers. They grow in pretty clusters and give off a sweet honey scent that pollinators simply can’t resist.