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Problem solving

Common garden mint

Growing mint in a pot and it has tiny white blotches on the leaves as they mature. Can anyone tell me what it is and what I should do please.

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Daintiness

Sounds like powdery mildew. It is a fungal disease and mint is susceptible to it.  Pick off all infected leaves and improve conditions.Your growing conditions may need to be changed. Powdery mild often occurs when a plant dries out - can happen easily in a pot...maybe consider have burying the pot in the ground or putting a saucer under the pot to stop this happening. If the plant is in a shady position....consider moving it to a sunnier spot. Make sure there is good air flow around the plant. 

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