Spider Mites

Yellow or bronze stippling on the upper leaf surface, tiny moving dots and (in later stages) fine webbing under the leaves and on bud sites. Two-spotted spider mite (Tetranychus urticae) is the usual indoor culprit. A female lays ~100 eggs and hatches in 3 days at 27 C, so a population can double every 2-3 days - treat within 24-48 hours of detection.

What usually causes it

• Hot, dry conditions (above ~27 C and below ~50% RH / high VPD) accelerate the life cycle
• Introduction on incoming clones, soil, pets or clothing
• High nitrogen producing soft, lush foliage that mites prefer
• Lack of preventative IPM (no predatory mites, no scouting)

Related product categories

• Plant Protection
• Insecticides & Miticides
• Biological Controls

Terms worth knowing

• VPD (Vapour Pressure Deficit)

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