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Intensive vegetation – Shrubs

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The intensive green roof’s vegetation is similar to a garden at ground level, because the structure allows this.

In case of garden or landscape type, the substrate thickness used ensures optimal conditions for the vegetation used but of course the climate and microclimate are also very important.

For this kind of rooftop gardens, perennials or annuals, shrubs, especially native species are recommended. Some general characteristics in case of coniferous or hardwood plants: undergrowth or bushes with the maximum height of 1.5-2 m; creeping or erect stems; adapted to dry (xerofile species, Xero-mesophilic) and relatively resistant to frost.

Trees can reach 5-6 m, that’s why they must be properly anchored. Their center of gravity should be placed as low as it is possible, otherwise a strong wind can displace them. (There are special anchoring devices – see section green roof elements, help for design). A list of plants that can be used in case of intensive green roofs is almost impossible, because it is actually a landscape project which takes into account the technical feasibility, the financial and environmental possibilities, the wishes of the client, and all these will define the final appearance.

Here we present some examples to underline the diversity of possible options, with species that can successfully populate green roofs:

Alnus viridis
Amelanchier laevis
Amelanchier stolonifera
Amygdalus nana
Aronia melanocarpa
Berberis vulgaris
Buxus sempervirens
Celastrus scandens
Cephalanthus occidentalis
Cladrastis lutea
Cornus alba
Cornus alternifolia
Cornus amomum
Cornus canadensis
Cornus racemosa
Cornus sericea
Cornus sericea ‘isanti’
Caragana arborascens
Chamaecytisus albus
Colutea arborescens
Cornus alba
Cornus mas
Cornus sanguinea
Corylus avellana
Cotoneaster horizontalis
Crataegus monogyna
Daphne laureola
Daphne mezereum
Diervilla lonicera
Hamamelis virginiana
Hydrangea arborescens
Hydrangea macrophylla
Hypericum kalm.
Jasminum fruticans
Juniperus horizontalis
Ligustrum vulgare
Lonicera tatarica
Kalm’s Ilex verticillata
Mahonia aquifolium
Myrica pennylvanica
Parthenocisus virginiana
Physocarpus opulifolius
Potentilla fruticosa
Potentilla tridentata ‘Nuuk’
Philadelphus coronarius
Physocarpus opulifolius
Ptelea trifoliata
Prunus cistena
Rhodendron ‘Aglo’
Rhus aromatica
Rhus glabra Ribes sanguineum
Rosa canina
Rosa gallica
Salix exigua
Sambucus canadensis
Sambucus pubens
Spirea alba
Spirea bumalda ‘Goldmound’
Spirea bumalda ‘Goldmound’
Spirea tomentosa
Symphoricarpus albus
Syringa vulgaris
Viburnum dentantum
Viburnum lentago
Viburnum trilobum
Viburnum opulus
Viburnum rhytidophyllum
Vitis riparia
Weigela florida ‘French Lace’
Tamarix tetrandra

With a great experience in landscaping and construction of green roofs, our company is ready to help you choosing the right type of ecological roof and vegetation for your construction.

Vegetation of intensive green roofs is similar to that of a garden at ground level, because the structure allows it. In case of intensive green roof gardens or landscape roofs, the thickness of the substrate ensures optimal living conditions for lots of plants, the most important criteria in choosing them, are the climate and the microclimate of the site and their annual growth rate.

For the selection of plants that will form the vegetation of a green roof or a living wall, qualified and experienced horticulturists and landscape engineers are advising us. Plants recommended by us are suitable for the climatic conditions of the site, most of them are native species. Further maintenance of these green roofs is done promptly and with maximum professionalism, so we promise that you’ll have an aesthetic, healthy and viable green roof.

Your ecological roof can be an extensive one, planted with sedum or ferns, or an intensive garden with grasses, perennials, shrubs and even high trees. We also use vegetation rolls developed for green roof systems, but grass can be also sown with seed mixtures, and for immediate results even trays fitted with matured plants can be installed. For any questions, please contact us!

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