Manage Wounds

Published on 2017/12/31 (Last updated on 2018/02/04)

Various propagation and care process for Haworthias can leave wounds on the plant bodies. A proper management not only protects a plant from rotting caused by pathogen infection but also promotes faster growth of plant tissues like roots.

Wounded plants treated with fungicide and rooting hormone.
Wounded plants treated with fungicide and rooting hormone.

Prepare a mix of fungicide powders with rooting hormone powders as the medicine. For fungicide, thiophanate-methyl is effective and even has systemic effects. For rooting hormone, both indole-3-butyric acid (IBA) and 1-naphthaleneacetic acid (NAA) products are good choices. In the mix, the proportion of thiophanate-methyl should be ~30%, and the IBA or NAA should be no more than 0.2%. An excessively high concentration of rooting hormone can inhibit root growth. If needed, pure talc can be used to dilute.

For treatment, use a cotton swab and stir the powder mix with ~70% isopropyl alcohol solution (rubbing alcohol) till they form a thick paste. Apply the paste on and around the wound to form a coating. Alcohol can kill certain pathogens on the wound and also assists fungicide and rooting hormone to permeate plant tissues. Keep the plant in a shaded and cool (ideally <=20°C) place for 2~3 weeks, so that a callus can be formed on the wound.