Green roofs can enhance biodiversity. Lindum plant mixtures are selected with wildlife and pollinators in mind and have been developed with the University of Sheffield's Professor Nigel Dunnett. The choice of vegetation mat and associated substrate depth is important in getting the most out of the value of the roof to wildlife.
The Lindum Wildflower & Sedum Mat contains a mixture of wildflower, sedums, herbs and perennials to create a diverse habitat for bees, butterflies, insects and birds, over a flowering period of April to September.
Lindum SedumPlus contains sixteen stunning varieties of sedum providing colour and interest and extends the flowering season well beyond a traditional sedum monoculture. This makes it an important source of pollen for large numbers of bees.
The Lindum Wildflower & Meadow Grass Mat is designed to produce an instant wildflower meadow on a roof, which will help to increase local biodiversity and can be designed specifically to blend in with the local landscape.
A key design of green roofs to support biodiversity is substrate depth. Different substrate depths can provide different habitats for organisms and plants.
For example, Lindum Wildflower & Sedum Mat requires a slightly deeper substrate then Sedum Plus, providing a diverse habitat for soil dwelling organisms and invertebrate flora to flourish.
The felt used in Lindum green roof vegetation mats is made from recycled British textiles. Growing substrates are made from recycled soils and green waste compost and do not include peat.
Bumblebees are of vital importance as they are key pollinators of many crops. There are 25 known species of Bumblebee in the UK, however they are in sharp decline, with many becoming extinct or endangered.
Recently published research has shown that mixed wildflower green roofs attract twice as many bee species and five times the number of blossom visits compared to green roofs planted with pure sedums.