Green Roof Alliums

What are called extensive green roofs are usually planted with low growing plants heat and drought resistant species such as sedums or grasses such as allium.

Green roof alliums. Their low growing and or spreading habits great drought tolerance seasonal flowers and contrasting foliage colours textures and forms make them ideal candidates for green roofs. Available as bare root bulbs. These roofs are essentially maintenance free. Two alliums that are useful on green roofs are allium cernuum and allium schoenoprasum.

Various low growing 6 10 tall alliums can be used for accent and they typically have green or bluish foliage and flowers of white pink or purple. Department of agriculture plant hardiness zones 2 through 9 can go without water. Species could include allium schoenoprasm and cultivars allium cernuum allium senescens and subspecies etc. Furthermore there are native allium species across north america and europe including the uk and france.

Each flower head comprises a tight cluster of tiny florets that emerge deep green but mature top to bottom to rose purple. Foliage may remain green in some locations or in mild winters. In fact allium schoenoprasum one of the most commonly used has a circumpolar distribution. Foliage colors can vary from green to yellow red and blue and flowers from white yellow and pink to reddish.

Called chives in english it is a widely used herb. Evergreen sedum species especially the vigorous creeping varieties such as sedum album which is hardy in u s. Also known as round headed leek this allium species produces cute reddish purple egg shape flower heads. Please contact us if you are interested in installing this plant as plugs.

Both have performed admirably in studies conducted at michigan state university. Please contact us if you are interested in installing this mix as plugs. Allium summer beauty creates a visually noticeable vertical accent adding some height to an extensive roof planting while increasing the potential for biodiversity. Description contains a blend of available allium bare root bulbs from our range of green roof appropriate allium stock.