Garden Naturals* Collection

* not intended to imply environmental safety either alone or compared to other products

Rot-Stop® Tomato Blossom End Rot Conc

Corrects calcium deficiency. Controls blossom end rot on tomatoes and other vegetables. Apply to developing fruit and foliage after periods of heavy rain or rapid growth. 4 tbsp./gal.

For Sale In All U.S. States
Safety Data Sheets (SDS) are located under Retail Support

Please Note: While most local, regional and national Garden Centers, Hardware Stores, Home Centers, Mass Merchants, Farm Feed Stores and online merchants carry BONIDE products not all products are available at all locations.
Please call or check online before driving to a retailer to be sure your item is in stock and thank you for choosing Bonide Products!

Dealer Locator


Q & A

  • There are sunken brown spots on the bottoms of my tomatoes. What causes this?

    Most likely it is blossom-end rot, which is caused by the lack of available calcium in the soil. Usually it occurs in the summer when it’s hot and dry when the tomatoes get too dry between watering. Use Bonide Rot-Stop® Tomato Blossom End Rot to add calcium to the plant by simply spraying it on the plant. Watering the tomato deeply in the early morning will also help decrease this issue.

View All Garden Naturals* Collection