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Nepenthes Heat Stress in Mini Greenhouse: Monitoring, Coffee Fertilizer, and Pruning

A grower's N. ventricosa hybrids in coconut husk baskets (NZ sphagnum/orchid bark) in unzipped mini greenhouse (shaded by shower curtain) show leathery copper-brown leaves, black droopy growth point. Expert: install wireless thermometer – intervene if >90°F. Black tip = heat damage; cut off. Coffee/tea fertilizer: adds nitrogen like grass clippings; expert saw no dramatic results in winter trials; Florida growers report success. Try if conditions optimal. Prune dead leaf entirely; new growth from dormant node.

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