{"id":818,"date":"2026-09-15T13:23:30","date_gmt":"2026-09-15T11:23:30","guid":{"rendered":"https:\/\/igwildebiene.ch\/pocket-park-wehntalerstrasse\/"},"modified":"2026-09-15T14:10:59","modified_gmt":"2026-09-15T12:10:59","slug":"pocket-park-wehntalerstrasse","status":"publish","type":"page","link":"https:\/\/igwildebiene.ch\/en\/pocket-park-wehntalerstrasse\/","title":{"rendered":"Pocket park no. 2: Wehntalerstrasse"},"content":{"rendered":"

At Wehntalerstrasse 46\/54, a wild bee pocket park of some 250 m\u00b2 was created in the course of landscaping around a newly built residential building \u2013 in the middle of a residential neighbourhood.<\/p>\n<\/div><\/div>

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Target species<\/strong>
More than 200 wild bee species have so far been recorded for the well-surveyed city of Zurich. Drawing on data from recent wild bee surveys in the district concerned, the project team identified the following locally occurring wild bees as priority target species for this site:<\/p>\n<\/div><\/div>

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\u2022 Dichtpunktierte K\u00f6rbchensandbiene: Andrena combinata<\/em>
\u2022 Rote Ehrenpreis-Sandbiene: Andrena labiata<\/em>
\u2022 Zweizellige Sandbiene: Andrena lagopus<\/em>
\u2022 Zaunwicken-Sandbiene: Andrena lathyri<\/em>
\u2022 Grosse Weiden-Sandbiene: Andrena vaga<\/em>
\u2022 Blaue Ehrenpreis-Sandbiene: Andrena viridescen<\/em>s
\u2022 Weissfleckige Wollbiene: Anthidium punctatum<\/em>
\u2022 Vierfleck-Pelzbiene: Anthophora quadrimaculata<\/em>
\u2022 Sp\u00e4tes Scherenbienchen: Chelostoma campanularum<\/em>
\u2022 Fr\u00fches Scherenbienchen: Chelostoma distinctum<\/em>
\u2022 Glockenblumen-Scherenbiene: Chelostoma rapunculi<\/em>
\u2022 Buckel-Seidenbiene: Colletes daviesanus<\/em>
\u2022 Rainfarn-Seidenbiene: Colletes similis<\/em>
\u2022 Kopfschild-Maskenbiene: Hylaeus clypearis<\/em>
\u2022 Schmalkopf-Maskenbiene: Hylaeus leptocephalus<\/em><\/td>\n		\u2022 Rainfarn-Maskenbiene: Hylaeus nigritus<\/em>
\u2022 Schilfgallen-Maskenbiene: Hylaeus paulus<\/em>
\u2022 Mauer-Maskenbiene: Hylaeus pictipes<\/em>
\u2022 Lauch-Maskenbiene: Hylaeus punctulatissimus<\/em>
\u2022 Reseden-Maskenbiene: Hylaeus signatus<\/em>
\u2022 Gr\u00fcngl\u00e4nzende Schmalbiene: Lasioglossum nitidulum<\/em>
\u2022 Wald-Schenkelbiene: Macropis fulvipes<\/em>
\u2022 Rosen-Blattschneiderbiene: Megachile centuncularis<\/em>
\u2022 Geb\u00e4nderte Blattschneiderbiene: Megachile circumcincta<\/em>
\u2022 Schwarzb\u00fcrstige Blattschneiderbiene: Megachile nigriventris<\/em>
\u2022 Filzzahn-Blattschneiderbiene: Megachile pilidens<\/em>
\u2022 Luzernen-Blattschneiderbiene: Megachile rotundata<\/em>
\u2022 Natterkopf-Mauerbiene: Hoplitis adunca<\/em>
\u2022 Sch\u00f6terich-Mauerbiene: Osmia brevicornis<\/em>
\u2022 Schwarzf\u00fchler-Holzbiene: Xylocopa valga<\/em><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div><\/div>

Landscaping<\/strong>
Following the needs of the defined target species, and taking the existing conditions into account, substrates and structures were chosen that are capable of supporting all of the target species:<\/p>\n<\/div><\/div>

\n\n\n
Substrate:
\u2022 Hummus (bestehend)
\u2022 Wildbienensand
\u2022 Wandkies (0-64mm)
\u2022 L\u00f6ss
\u2022 Sandstein-Bl\u00f6cke
\u2022 Totholz<\/td>\n		Strukturen:
\u2022 Hecken (teilweise bestehend)
\u2022 Geh\u00f6lze (teilweise bestehend)
\u2022 Abbruchkante aus L\u00f6ss
\u2022 Steilwand aus Sand
\u2022 Totholzstr\u00fcnke<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div><\/div>

Planting<\/strong>
Some existing woody plants (birch, walnut, cherry, field maple, ivy, wild cherry, hawthorn and blackthorn) line the north-western side of the park and screen it from the neighbouring building. At right angles to these, a willow hedge was planted at the rear, north-eastern end of the park. To the south-west, the low hedge of an adjoining property bounds the park. The new structures in between were planted (apart from the deliberately sparse vegetation of the sand and loess areas) with the following native wild perennials and bulbs:<\/p>\n<\/div><\/div>

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Achillea millefolium
Allium \u201aCameleon\u2018
Allium \u201aMiami\u2018
Allium acuminatum
Allium ampeloprasum
Allium caeruleum
Allium carinatum
Allium christophii
Allium cowanii
Allium oreophilum
Allium sphaerocephalon
Anchusa officinalis
Anthemis arvensis
Anthemis sancti-johannis
Anthyllis vulneraria
Artemisia absinthium
Asperula orientalis
Calamintha menthifolia
Calamintha nepeta
Campanula alliariifolia
Campanula barbata
Campanula cervicaria
Campanula persicifolia
Campanula poscharskyana
Campanula rapunculoides
Campanula rotundifolia
Campanula trachelium
Caragana arborescens
Carduus crispus
Carduus defloratus
Carduus nutans
Centaurea jacea
Centaurea scabiosa<\/em><\/td>\n		 Cephalaria ambrosioides
Cephalaria leucantha
Cirsium canum
Cirsium japonicum
Cirsium oleraceum
Cirsium tuberosum
Coronilla valentina
Crupina vulgaris
Cynara cardunculus
Daucus carota
Dianthus deltoides
Diplotaxis erucoides
Dipsacus fullonum
Dipsacus laciniatus
Echinops ritro
Echium vulgare
Eryngium planum
Foeniculum vulgare
Geranium asphodeloides
Heracleum sphondylium
Hesperis matronalis
Isatis tinctoria
Jasione laevis
Knautia arvensis
Knautia dipsacifolia
Lamium album
Lathyrus sylvestris
Linaria genistifolia
Lotus corniculatus
Lythrum salicaria
Nepeta tuberosa
Onobrychis viciifolia
Ononis spinosa<\/em><\/td>\n
Onopordum acanthium
Onopordum cyprium
Onosma echioides
Orlaya grandiflora
Pastinaca sativa
Peucedanum verticillare
Ptilostemon chamaepeuce
Reseda luteola
Salix caprea
Salix purpurea
Salvia candelabrum
Salvia glutinosa
Salvia pratensis
Salvia sclarea
Scabiosa columbaria
Scrophularia nodosa
Scutellaria altissima
Seseli libanotis
Silene dioica
Stachys byzantina
Stachys recta
Stachys sylvatica
Tanacetum corymbosum
Tanacetum vulgare
Teucrium chamaedrys
Teucrium hircanicum
Verbascum nigrum
Veronica chamaedrys
Veronica gentianoides
Veronica prostrata
Veronica teucrium
Vicia cracca
Zizia aurea<\/em><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div><\/div>
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Late winter 2021: Before IG Wilde Biene took over the pocket park on Wehntalerstrasse, it served as a building depot for the construction of the new residential building visible at the back right. (Photo: Andr\u00e9 Rey)<\/p>\n<\/div><\/div>

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Summer 2021: The site after completion of the new building (photo: Andr\u00e9 Rey)<\/p>\n<\/div><\/div>

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The improvement plan drawn up by our landscape architect Andr\u00e9 Rey.<\/p>\n<\/div><\/div>

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Autumn 2021: The improvement work has begun. (Photo: Sebastian Wagener)<\/p>\n<\/div><\/div>

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Autumn 2021: Several hundred seedlings of more than 100 native wild perennials go into the ground. (Photo: Sebastian Wagener)<\/p>\n<\/div><\/div>

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Winter 2021\/2022: The large stone blocks in the foreground (seen from Wehntalerstrasse) prevent the area from being misused as a car park. Behind them lies the sand and loess bank for wild bees that nest in steep faces. (Photo: Sebastian Wagener)<\/p>\n<\/div><\/div>

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Spring 2022: The planting begins to sprout and\u2026<\/p>\n<\/div><\/div>

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\u2026the first flowers appear. (Photos: Sebastian Wagener)<\/p>\n<\/div><\/div>

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Spring 2022: The crowning touch of the improvement work \u2013 the information panel is up! (Photo: Sebastian Wagener)<\/p>\n<\/div><\/div>

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April 2024: Flowering begins (photo: Sebastian Wagener)<\/p>\n<\/div><\/div>

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May 2024: Abundance and diversity of flowers are increasing. The loess mound, deliberately kept sparsely vegetated and therefore largely bare, offers numerous ground-nesting species an ideal place to nest. (Photo: Sebastian Wagener)<\/p>\n<\/div><\/div>

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May 2024 (photo: Sebastian Wagener)<\/p>\n<\/div><\/div>

Partners<\/strong>
The upkeep of the Zurich pocket parks<\/em> is made possible by Daniel Labhart from Schafisheim in the canton of Aargau. This innovative horticultural entrepreneur has a genuine commitment to biodiversity and supports the work of IG Wilde Biene<\/a> through the sale of his planting bricks optimised for wild bees<\/a>.
Petrig AG<\/a> in Volketswil supports us with custom-made, weatherproof mounts for the information panels of at least the first 20 pocket parks.
And Gr\u00fcn Stadt Z\u00fcrich lets us use the city's small parks rent-free and bears the cost of the improvement measures.<\/p>\n<\/div><\/div><\/div><\/div>

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