Flower strips are advocated as a strategy to promote beneficial insects as well as the services they deliver to adjacent crops. Flower strips have, however, often been developed separately for pollinators and natural enemies and, additionally, little consideration has been given to effects on insect herbivores. We sampled insect herbivores, their natural enemies and parasitism of pest eggs using vacuum sampling, sticky cards and egg cards in nine pairs of bee-attractive wildflower plantings and control field borders, as well as in adjacent tomato and watermelon crop fields in Yolo County, California 2015–2016. Control field borders had a higher total number of herbivores on sticky traps than did wildflower plantings, a pattern that was driven by more aphids, hoppers, psyllids and whiteflies, whereas wildflower plantings had more lace bugs and Lygus bugs. The total number of herbivores in the adjacent crop fields did not differ between treatments, but there were more leaf beetles near (at 10 m but not 50 m from) wildflower plantings. Control field borders had a higher total number of predators, driven by more big-eyed bugs, lady beetles and minute pirate bugs, whereas spiders were more common in wildflower plantings. The total number of predators in adjacent crop fields was, however, higher in those next to wildflower plantings, which was driven by more minute pirate bugs. Parasitoid wasps were more common in wildflower plantings and at 10 m but not 50 m into adjacent crop fields. Stink bug egg parasitism rate did not differ between treatments, either in the borders or in the crop fields. In conclusion, wildflower plantings clearly affect the insect herbivore and natural enemy community, but do so in a highly taxon-specific manner, which can lead to both positive and negative outcomes for pest control as a result.

花条被提倡作为促进有益昆虫及其为邻近作物提供服务的策略。然而，花条通常是为传粉者和天敌单独开发的，此外，很少考虑对昆虫食草动物的影响。我们在九对吸引蜜蜂的野花种植区和控制田边界，以及优洛县附近的番茄和西瓜作物田中，使用真空采样、粘卡和卵卡对食草昆虫、它们的天敌和寄生虫卵进行了采样。加州 2015–2016。控制田边界上粘性陷阱上的食草动物总数高于野花种植，这种模式是由更多的蚜虫、跳虫、木虱和粉虱驱动的，而野花种植有更多的花边虫和草盲虫。相邻农田的食草动物总数在处理之间没有差异，但在野花种植附近（10 m 但不是 50 m）有更多的叶甲虫。对照田边界的捕食者总数更高，受更多大眼虫、瓢虫和小海盗虫的驱使，而蜘蛛在野花种植中更为常见。然而，邻近农田的捕食者总数在野花种植区附近的田地中更高，这是由更多微小的海盗虫驱动的。寄生蜂在野花种植区和邻近农田 10 m 而不是 50 m 处更为常见。臭虫卵寄生率在处理之间没有差异，无论是在边界还是在农田。综上所述，