Most ornamental plants on sale in garden centres are unattractive to flower-visiting insects.

Correlations in the absolute mean insect counts per unit area were also strong and significant ( P = 0.001, Garbuzov & Ratnieks, 2014b ) or marginally non-significant ( P = 0.089, Garbuzov, Samuelson & Ratnieks, 2015 ) between this survey and the two previous surveys, although considerably below 1:1 ( Fig. 2B ), perhaps because plants in pots attract fewer insects than those established in the ground.

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