Green Roof Alliums

Foliage may remain green in some locations or in mild winters.

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. Description contains a blend of available allium bare root bulbs from our range of green roof appropriate allium stock. Please contact us if you are interested in installing this plant 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.

Available as bare root bulbs. 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. Species could include allium schoenoprasm and cultivars allium cernuum allium senescens and subspecies etc. 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.

Please contact us if you are interested in installing this mix as plugs. Succulents particularly colourful sedums dominate shallow substrate green roofs across temperate europe and north america. Each flower head comprises a tight cluster of tiny florets that emerge deep green but mature top to bottom to rose purple. Called chives in english it is a widely used herb.

Two alliums that are useful on green roofs are allium cernuum and allium schoenoprasum. Alliums are always a great choice for green roofs. Foliage colors can vary from green to yellow red and blue and flowers from white yellow and pink to reddish. 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. In fact allium schoenoprasum one of the most commonly used has a circumpolar distribution. These roofs are essentially maintenance free. Department of agriculture plant hardiness zones 2 through 9 can go without water.