Nutrient application to roots promotes production of non-carnivorous leaves in Cephalotus follicularis Labill. (Cephalotaceae)

Kuga Wood and Taiga Wood and Michael Commins and Emmi Kurosawa

Carniv. Pl. Newslett. 55(3):115-119
Published 3 August 2026

https://doi.org/10.55360/cpn553.ek593

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Abstract

Carnivorous plants such as Sarracenia, Drosera, and Utricularia are known to reduce investment in carnivorous traits when nutrients are supplied through their roots and shoots. We hypothesized that Cephalotus follicularis would respond similarly by reducing pitcher production when nutrients are available in the growth medium. To test this hypothesis, plants were grown for six months with varying amounts of Osmocote (14-14-14). We measured (1) number of pitchers, (2) number of leaves, and (3) crown size before and after treatment, and compared the differences among treatments. Contrary to our expectations, Osmocote application did not significantly affect pitcher production or crown size. However, higher nutrient treatments significantly increased non-carnivorous leaf production. These results suggest that C. follicularis, like other carnivorous plant genera, may shift resource allocation away from carnivory toward nutrient acquisition via roots when nutrients are readily available.

Keywords: Cephalotus, nutrient, carnivorous plant, Albany pitcher plant, carnivory

Article Citation

Kuga Wood and Taiga Wood and Michael Commins and Emmi Kurosawa. 2026. Nutrient application to roots promotes production of non-carnivorous leaves in Cephalotus follicularis Labill. (Cephalotaceae). Carniv. Pl. Newslett. 55(3):115-119. https://doi.org/10.55360/cpn553.ek593

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