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with purple stripes.Pick off the adult beetles and larvae by hand and destroy.Spray with an insecticide - thiocloprid or imidacloprid - between late summer and spring. Avoid using insecticide when the plants are in flower as bees may also be killed.rosemary

May-SeptemberMore pests of herbsAphidsBay leaf suckersFlea beetleRosemary leaf beetle

More common garden pestsRosemary leaf beetleLily beetleVine weevilThrips

. Take care not to disturb the beetles before an application, or they'll jump out of harm's way.brassica seedlings, nasturtiums, alyssum, anemone, stocks, cleome, godetiaspring, summerMore common garden pestsLily beetleRosemary leaf beetleCapsid bugsLeatherjackets

as soon as roots have formed.More on growing herbsSow basil seed, video advice from Joe SwiftGrowing peppermint and thyme, with Monty DonDeterring rosemary leaf beetleAdvice on picking herbs

or they'll fly off.At the first sign of attack, spray plants with acetamiprid or sunflower oil. Treatment is more effective on larvae than adults.lilies, fritillaries and Solomon's sealspring, summer, autumnMore common garden pestsPollen beetleFlea beetleRosemary

-chewing garden pestsSlugsCaterpillarsEarwigsRosemary leaf beetle