also: テングスびょう · テングすびょう
witches' broom; hexenbesen
A plant disease causing dense clusters of small branches, resembling a broom or bird's nest. The Japanese name references tengu (天狗), mythical creatures often depicted with long noses, possibly alluding to the distorted growth.
This cherry tree is affected by witches' broom.
Witches' broom is caused by fungi or phytoplasmas.
Standard kanji spelling using 天狗 (tengu) and 巣 (nest), reflecting the disease's appearance.
Mixed kana-kanji spelling; てんぐ is written in kana.
Katakana spelling for テングス, with 病 in kanji.
Kana spelling for てんぐす, with 病 in kanji.
Mixed katakana-kanji spelling; テング in katakana, 巣病 in kanji.
Compound of 天狗 (tengu, a mythical creature) + 巣 (su, nest) + 病 (byō, disease). The name likely comes from the tangled, nest-like growths resembling the disheveled appearance of tengu.