Green Roof Alliums

Alliums are always a great choice for green roofs.

Green roof alliums.

These roofs are essentially maintenance free. 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. Department of agriculture plant hardiness zones 2 through 9 can go without water. Foliage may remain green in some locations or in mild winters.

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. Called chives in english it is a widely used herb. Available as bare root bulbs. Succulents particularly colourful sedums dominate shallow substrate green roofs across temperate europe and north america.

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. 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. 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. Foliage colors can vary from green to yellow red and blue and flowers from white yellow and pink to reddish. Please contact us if you are interested in installing this mix as plugs. Also known as round headed leek this allium species produces cute reddish purple egg shape flower heads.

Each flower head comprises a tight cluster of tiny florets that emerge deep green but mature top to bottom to rose purple. Please contact us if you are interested in installing this plant as plugs. Both have performed admirably in studies conducted at michigan state university. Description contains a blend of available allium bare root bulbs from our range of green roof appropriate allium stock.