The wildflower and grass species mix is designed to create food, nectar and pollen sources for a wide range of invertebrate species. These roofs can be left relatively undisturbed to attract ground nesting birds.
Log and stone piles may be placed over the surface to create shelter for an even wider selection of invertebrate species.
The optimum time for sowing is late summer / early autumn, with April-May the next best window. Sow onto the surface but do not rake in. Instead, walk over the newly sown area to firm and level the seed bed and create good seed / soil contact.
Flowering Period: May – August.
Typical Colours: Seasonal variation of yellows, whites, reds and pinks. Foliage turns from green to brown in the autumn.
Planting Density: 20 plugs/sqm over 20% of the roof surface (generally planted in the deeper substrate areas).
Sowing Density: 1 – 3g/sqm over full area.
Typical Species: (subject to season variation)
Wildflower species -Agrimonia, anthyllis, centaurea, clinopodium, echium, galium, hypericum, knautia, leontodon, leucanthemum, linaria, lotus, malva, origanum, plantago, primula, prunella, ranunculus x 2, reseda, sanguisorba, silene. Grass species -Briza, cynosurus, festuca x 2, phleum, trisetum.
Moderate mixed pollen source, applicable to Bees, hoverfly, Ladybirds.
Establishment Period: 12 months and typically 24– 36 months to achieve desired ground cover.