World Green Roof Day’s Post

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Follow Alison Benjamin and her work at URBAN BEES LIMITED, encouraging solitary bees to the rooftops of London, United Kingdom.

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Co-founder & operations director, Urban Bees | Rooftop rewilder | Best-selling author | Journalist | Speaker | Educator | APPG Bees and Pollinators advisor

So exciting to see the first Wool Carder bees of the year eight floors up in the City on my rewilded Bread Street rooftop, nurtured and loosely maintained by URBAN BEES LIMITED. Why were the bees there? To mate (we saw males and females), and to feed on the large patches of Lamb's ear (Stachys byzantina) we planted specially for them. Not only does this very drought tolerant plant provide nectar but the females will tease out the fibres from the velvety leaves ('carder' means to tease out fibres), roll it into a ball and fly home to use it to construct its nest. Usually the Lamb's ear flowers just as the Wool Carder bee emerges, but this year in London the flowers are almost over, and they've been feeding Buff-tailed bumblebees and honeybees instead. Luckily, the Wool Carder bees also seemed happy to forage on the Teucrium hircanicum 'Purple Tails' - another drought-tolerant plant flourishing on the rooftop. We saw them as part of the monthly pollinator survey conducted by Konstantinos Tsiolis for Pollinating London Together. By catching them and observing them more closely we could see the spikes at the end of the male Wool Carder bee's abdomen which he uses to fight off other males from the patch of Lamb's ear he has claimed as his mating territory. We're not sure where in the City they are nesting. They like cavities in old wood. More details to come... #bees #greeningcities #rewilding #biodiversity #sustainability

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