Copper Wire Stakes and Dormancy: Two Causes of Drosera binata Decline

Toxic Copper and Missing Winter Rest

A Drosera binata that declines after staking with copper wire likely suffered copper toxicity—copper is poisonous to all plants. If the wire was stuck in the soil, it leached into the root zone.

Dormancy Factor

Forms like dichotoma and T‑form need a short winter dormancy. Without it, they lose vigor in spring.

Recovery

• Remove all copper immediately.
• Repot in fresh media if roots were exposed.
• Provide a cool (40–50°F), bright rest period next winter.

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