Southern Ag STOP Blossom-End Rot of Tomatoes will have up to a three year shelf life on the product if stored away from extreme temperatures.
Southern Ag STOP Blossom-End Rot of Tomatoes states per the product label for application: Apply SA-50 Brand Stop Blossom-End Rot of Tomatoes as a spray using 2 tablespoonfuls (1 fluid ounce) per gallon of water. Apply as a thorough cover spray to foliage and fruit. Use at weekly intervals for at least 3 sprays. This material may be added to regular sprays fro insects and disease and is compatible with materials such as Malathion, Diazinon, Sevin, Dithane, and Neutral Copper. Do not use greater than the recommended rate or injury to the plant may result.
Southern Ag STOP Blossom-End Rot of Tomatoes should not harm bees, but we would recommend applying early morning or late evening when they are not in the area and less active to avoid direct contact.
We cannot recommend using Southern Ag STOP Blossom-End Rot of Tomatoes to treat plants other than tomatoes since that is all that the product is registered to treat. You can learn more about treating root rot on avocado trees in this article.
Southern Ag STOP Blossom-End Rot of Tomatoes does not mention any temperature restriction on the label. Usually temperature restrictions would be to prevent plant burn or damage. We would advise to apply in the morning or late in the evening if you live in a location with very high daytime temperatures.