Even though your tomatoes are sun-loving and call their home town Mexico; be careful that you don’t drown them by over-watering during heat waves. In doing so you can cause them to split and develop blossom end rot.
Just be a little sparing with the H20; and hold off if you see rain in the next day’s forecast. Also mix in a little calcium under the plants; this will help in holding off the rot as well.
Remove the sucker too; no sense letting something grow that only uses up moisture and produces zero benefits.
If you have any questions feel free to contact me at NiemeyerLandscaping@Gmail.com or post a comment on this Blog