Ivy (Hedera helix) is in bloom at the moment, one of our most prolific wildflowers and the last big hit of pollen and nectar for insects. Ivy feeds the full spectrum of pollinators: honey bees and bumblebees, wasps, flies, moths, butterflies et al.

  Yesterday I noticed a large Holly tree with masses of Ivy clambering through it. The whole tree was swarming with wasps, so many there was an audible buzzing noise.