Many years ago, all of my tomatoes, as well as much of what was in the farmer's fields was rotted by non-stop rains. Next season, I started growing fifteen tomatoes in upside-down buckets. These drained quickly, no matter how much it rained. I had to hook up a drip emitter to each bucket, to water, when no rain. This year, I switched to Earthboxes and homemade self-irrigated planters, and these would also survive severe rainfall, as there is a "shower cap" on each one, and an overflow method for the watering reservoir, making it impossible to overwater. And I always had more tomatoes from the upsidedown buckets, and last year incredible production from those Earthboxes.