Green Roof Alliums

Available as bare root bulbs.

Green roof alliums.

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. Both have performed admirably in studies conducted at michigan state university. Please contact us if you are interested in installing this mix as plugs. Other common green roof plants include ice plant delospermum sp hens and chicks sempervivum sp creeping thyme thymus serphyllum chives and ornamental onions allium sp phloxes phlox sp pussytoes anntenaria sp thrift armeria sp and false rock cress aubretia sp.

Please contact us if you are interested in installing this plant as plugs. Species could include allium schoenoprasm and cultivars allium cernuum allium senescens and subspecies etc. 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. Called chives in english it is a widely used herb.

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. Also known as round headed leek this allium species produces cute reddish purple egg shape flower heads. Foliage may remain green in some locations or in mild winters. Description contains a blend of available allium bare root bulbs from our range of green roof appropriate allium stock.

Two alliums that are useful on green roofs are allium cernuum and allium schoenoprasum. Evergreen sedum species especially the vigorous creeping varieties such as sedum album which is hardy in u s. Allium summer beauty creates a visually noticeable vertical accent adding some height to an extensive roof planting while increasing the potential for biodiversity. Furthermore there are native allium species across north america and europe including the uk and france.

Department of agriculture plant hardiness zones 2 through 9 can go without water. Succulents particularly colourful sedums dominate shallow substrate green roofs across temperate europe and north america. These roofs are essentially maintenance free. In fact allium schoenoprasum one of the most commonly used has a circumpolar distribution.