Lightweight Wildflower Green Roofs

Our M-Tray® wildflower roof system consists of specially-designed trays with bespoke substrate mix and native wildflowers. Easy-to-carry trays which click together to form a seamless green roof. Sedum/Wildflower mix grown from seed at our own UK nurseries. Achieves a fire classification of B ROOF t(4) and was tested in accordance with CEN/TS 1187 Test 4. 

As well as the sedum trays, Wallbarn also supplies a sedum/ wildflower version of M-Tray® for use on green roof systems.

Biodiversity is becoming more popular for urban greening schemes as it has been proven that a large mix of native English flowering species is the best way to attract and promote wildlife such as bees, butterflies, other insects and birds into these roof spaces. By replicating what is happening out in the fields on urban roofs we can help to replace what has been lost and improve the environment.

Wallbarn sows a low-density amount of sedum species to give a year round green and good level of ground cover and adds, again from seed, a mix of wildflower species which contain the following characteristics:

• They are low growing species with as much succulence as possible
• They are all native to UK / northern Europe
• They are perennial and hardy
• They will grow in low nutrient substrates
• They have proven to improve biodiversity

A few factors need to be borne in mind when considering wildflower roofs:

• Flowers can grow tall and die back to leave dead grasses and stems, which can lead to a fire hazard
• Wildflowers will not provide the same ground coverage or year-round greening of sedum roofs
• Wildflowers take longer to grow and flower than sedum
• Wildflowers often require 2 years before flowering and may not return year after year without re-seeding
• Some wildflowers will not flower in certain years, performance depends heavily on the weather that year
• Wildflower roofs require more maintenance than sedum roofs

The  sedum / wildflower ratio is designed to complement each other and provide variety and attractive spaces across the summer but also with a sufficient amount of coverage and “green” throughout the year.

Bespoke options are available.

To find out more, please visit – https://www.wallbarn.com/green-roofs/m-tray-wildflower/