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'Mona Lavender' Plectranthus: Annual or Perennial? Depends on Your Zone

In frost-free South Africa (its origin), it's a perennial shrub with woody stems, purple-veined leaves, and lavender spikes when days drop below 12 hours. Where winters freeze, treat as an annual. Pinch faded flowers, fertilize monthly, water when droopy. Root 6″ cuttings in water each October for next year's plants.

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