Solar panels or trees? Specifications for large parking spaces

Yes, there are requirements for the trees. These result from the following criteria:

• Tree species: Native and/or site-appropriate deciduous trees I. or II. Order. You will find a list under "Which tree species are recommended?"
• Trunk circumference: At least 16/18 cm (measured at a height of 1.00 m).
• Crown base: At least 1.80 m high.
• Root space: At least 3.00 m x 5.00 m area and 1.5 m depth, rootable.
• Tree substrate: In accordance with the FLL guidelines for tree planting (construction method 1).
• Protective measures: Protection from motor vehicles.
• Planting beds: To be laid out at ground level or with water guiding boards.

The following tree species are recommended:

• Acer campestre (field maple)
• Acer platanoides 'Columnare' (Norway maple)
• Acer rubrum 'Armstrong' (red maple)
• Acer rubrum 'Scanlon' (red maple)
• Carpinus betulus (hornbeam)
• Fraxinus angustifolia 'Raywood' (narrow-leaved ash)
• Fraxinus pensylvanica 'Summit' (red ash)
• Gleditsia triacanthos inermis (leather tree)
• Gymnocladus dioicus (antler tree)
• Liquidambar styraciflua (amber tree)
• Liriodendron tulipifera (tulip tree)
• Platanus x hispanica (plane tree)
• Quercus palustris (swamp oak)
• Sophora japonica (Japanese cord tree)
• Tilia tomentosa 'Brabant' (silver lime)

Note: This list is not exhaustive. Other suitable tree species can be found in the GALK list "Future trees for the city". The brochure can be downloaded free of charge from the following link: https://galk.de/arbeitskreise/stadtbaeume/themenuebersicht/zukunftsbaeume-fuer-die-stadt/

The planting must be carried out at the latest in the planting period following the completion of the car park.

Here you will find sample drawings of how the planting in the car parks could look:

• Tree beds as a central row of trees between the car parks opposite each other
• Trees between the car parks
  • Drawing 1
  • Drawing 2
  • 3D drawing