Can you apply Pennington Lime Plus around tomato plants that already have fruit on the vine?
Applying Lime Around Fruiting Tomato Plants
Certified GKH Gardening Expert
If you know that your soil needs lime, it is best to apply at the end of the year or early next spring to avoid damaging the plants. Mix in to the soil well, and follow the label directions.
This article discusses how to determine whether you need lime and how to apply it: