How about a climbing Clematis that can be different colours attracting different insects for example they can attract slugs ,snails, and spider mites also earwigs which tend to hide in the flowers then they come out at dusk and eat the leaves, so maybe that could be like a cactus only attracting earwigs at night time. And if no one spots the  earwig at night time, it means you lose a flower and then it takes longer to be ready for harvest. I know we already attract bees and caterpillars, but maybe this can be intertwined with the beehives. Also attracts greenfly and blackfly which leave sticky leaves which then attracts 🐜 ants 🐜