Why does your Chrysanthemum Pico Libero have fine webbing? Diagnose the cause and fix it with our step-by-step guide.
The presence of fine webbing is a hallmark sign of spider mites, which thrive in the warm, dry conditions often found around Chrysanthemums. These pests pierce plant cells to feed on sap, causing the characteristic stippling (tiny white dots) and silk webs.
This specific species of mite is highly prevalent in greenhouse-grown Chrysanthemums like 'Pico Libero'. High humidity and low airflow can trigger rapid population growth, resulting in dense webbing that can eventually cover entire flower heads.
While webbing is usually biotic, extremely dry air can cause certain delicate plant structures to become brittle and trap environmental dust/debris in a way that mimics fine silk. This often accompanies spider mite outbreaks as they prefer dry microclimates.