Freezing temperatures can cause the active ingredients in Ortho MAX Poison Ivy and Tough Brush Killer Ready-To-Use to break down therefore be less effective. We recommend not storing the container where it has the risk of being exposed to the freezing temperatures.
Ortho MAX Poison Ivy and Tough Brush Killer Ready-To-Use is not specifically labeled for English Ivy but could cause injury. Please provide the area that you will be treating around (plants/ornamentals) for an alternate recommendation that would best fit your needs (including the size area). Thank you!