when tomato drop their bottom leaves from bottom up it is a form of wilt that is caused by splashing water..try to do everything you can to prevent water from splashing up on the leaves..either drip irrigate or make sure when it rains there is a good mulch to preven too much splashing..those plastic mulches splash a lot so I wouldn't use them
Bloom where you are planted.
How about building low pergola for tomatoes? Like a web, made of stakes, wire or ropes, horizontal and off the ground maybe 1'? Would tomatoes then grow straight upwards through the web, and later creep on this web? I might give a try next year, since I realy need growing solution that tolerates my absence for a week or two.
Keeping ground mulched or grassed and leaving tomatos without any support might be good enough, I will try this also, but keeping them off the ground, yet spreading horizontaly and shading it's own roots might be even better, if it will work.
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