As with all tomato plants make sure you add some water-soluble calcium salts to prevent end rot of your tomatoes. I use fast dissolving lime. Proper watering is required to make sure the calcium gets to the roots.
"Below, we've listed some excellent sources of calcium for tomato plants:
Wood ash.
Shells (eggs, oysters, and clams)
Dolomite.
Lime (calcium carbonate)
Bone meal.
Gypsum.
Calcium nitrate.
Mar 1, 2023
The Importance Of Calcium For Tomato Plants (+ Growing Tips)"