Last August I walked through the art-college quarter of Rotterdam and I walked onto this building site. The building was almost finished but the sidewalk was a work in progress. Some tough plants had gained a foothold in this inhospitable and fleeting refuge. I decided to do a Wilfried Houjebek and exercise my urban botany skillz.
It is easiest to do botany in situ - with the plant guide next to the plant. But it is November now so had to use the photographs. Still I found 10 species - all very comon pioneer/roadside plants. Isn't nature wonderful? All this vitality for free.
Koolzaad - Rapeseed - Brassica Napus
Heermoes - Field Horsetail - Equisetum Arvense
Engels raaigras - Perennial Ryegrass - Lolium Perenne
Melganzenvoet - White Goosefoot - Chenopodium Album
Canadese fijnstraal - Canadian Horseweed - Conyza canadensis
Gewone Veldbies - Field Wood-rush - Luzula Campestris
Varkensgras - Common Knotgrass - Polygonum aviculare