Mainly roses, they tend to get air bubbles in the stems and branches, which delay the flow of water and food.
Kanzhi tshi ya zwala nga u ṱavhanya fhethu hune ha dudela tsha kona u sika dzi fungi nnzhi-nnzhi dzine dza fhedza dzi tshi khou phaḓalala nga muya na maḓi.