Spring gardening warning as Legionnaires threat lurks

Health officials in New Zealand are warning gardeners to wear masks and gloves when handling potting mix to prevent Legionnaires' disease. The South Island has seen a significant number of cases recently.
Why it matters
Public health warnings are essential for preventing avoidable hospitalizations caused by environmental bacteria found in common gardening products.
<p>The South Island recorded the most Legionnaires' disease cases in the country over the past year, as health officials urge gardeners to wear masks and gloves when handling potting mix this spring.</p> <p>Health NZ figures show 54 of the 152 legionellosis cases notified nationwide between September 2025 and August 2026 were in the South Island, and 46 of those people were hospitalised.</p> <p>Across the country, 135 people ended up in hospital with the disease.</p> <p>National Public Health Service medical officer of health Dr Matthew Reid said gardeners could take simple precautions to protect themselves.</p> <p>"To reduce the risk of breathing in legionella bacteria only handle potting and compost mix bags outdoors or in well-ventilated areas, and open them carefully and away from your face.</p> <p>"It's also important to wear gloves and a well-fitting face mask.
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