Bonide Rot-Stop Concentrate (16 fl oz)

Bonide Rot-Stop Concentrate is a 9.2% calcium foliar supplement for tomatoes, cucumbers, melons, and peppers. It supplies calcium derived from calcium chloride to help correct deficiencies associated with blossom-end rot. The 16 fl oz concentrate is suited to treating multiple plants with a hand or hose-end sprayer. Mix 2 fl oz (4 tablespoons) per gallon of water, then spray foliage and developing fruit to the point of runoff during rapid growth or after excessive rainfall.

Apply in early morning or evening. When conditions favor the disorder, repeat at 5–7 day intervals. Do not use as a continuous spray program or exceed the labeled rate, because excessive application can burn foliage. Keep soil moisture consistent, and use Rot-Stop as a supplement to a regular fertilization program. Store upright in the original container away from children and pets.

Review Bonide’s current Product Label and Safety Data Sheet before use.

How Bonide Rot-Stop Concentrate (16 fl oz) fits a fertility plan

• Supplies supplemental calcium for labeled vegetable and fruit uses where calcium management is part of the crop program.
• The concentrate or ready-to-use format shown in the title helps gardeners choose the preparation method that fits their application.
• Works best as one component of consistent irrigation, healthy roots, and balanced fertility rather than as a remedy for every cause of fruit damage.

Application guidance: Read and follow the product label for crops, timing, dilution, spray coverage, protective equipment, and harvest restrictions. Diagnose the cause of symptoms before treatment; drought stress, waterlogged roots, salinity, or root injury can limit calcium movement even when calcium is present.

Compare related soil amendments when building a complete program.