Richard from Beech Mountain writes
Casoron 4G Herbicide is not labeled for use around ajuga or other groundcovers, so we would not recommend this application. We recommend taking a look at Snapshot for a pre-emergent to use around established ornamentals and groundcovers. This product is labeled for use around ajuga species. We suggest testing a small area if your plants are not listed on this label as known to be tolerant.
Answer last updated on: 10/01/2019