How to help pollinators in cities

Researchers have performed the most comprehensive study to date on pollinator feeding habits in cities. They document what plants pollinators prefer and use computer models to predict the best ways to help them thrive.

[ericwebster]

Can someone explain exactly what is meant by allotment? I've got the don't mow the lawn part all taken care of.

[magichands]

Really, no specific plants? Like Agrimony, not very well know but butterflies and bees go totally nuts for that.

[tungnguyenthanh]

I wonder why we should not mow the grass... Bees and other pollinators surely don't have a liking for it, right?