This is a Cherokee Purple and it's growing in a pot. The tomatoes got blossom rot so I just gave it calcium yesterday but what's wrong with the leaves? Seems to just be on the bottom half of the plant. Do I need to remove the leaves? Any help/advice would be much appreciated!

jean is right, that is *not* glyphosate damage, that looks like 2-4D damage. My first year of gardening I listened to my grandpa and he said "aw hell just spray roundup around the plants to keep the weeds down. Well, my tomatoes looked like this afterwards: 2-4D causes plants to basically grow themselves to death, it causes the plant to grow in all kinds of weird directions and shapes, it makes them curl. If it is herbicide damage, then My vote goes into the 2-4D type of chemicals. Are there any farm fields next to you that might have gotten sprayed? Another thing no one has mentioned yet is disease, I was scolded and scared by my dad and grandpa when getting advice "you never never never plant tomatoes in the same dirt year over year" they said. Eggplant, peppers, potatoes, tomatoes, and tobacco are all in the nightshade family. They will be vulnerable to the same sets of diseases. Here is a link that might be useful: My Garden

"Those plant are not short of calcium. Calcium shortage leads to malformed cells which die and turn black." An intermediate situation exists in which foliage does not die. In such cases, the calcium shortage within the plant is, in part, caused by the plant growing so fast that its roots can't supply adequate calcium to newly forming tissue which becomes distorted. The slow absorption of calcium is due to poorly soluble forms of calcium, e.g., lime, within the planting media. After growth becomes slower, the calcium supply is adequate and new growth will not be distorted. With pure auxin herbicide injury, the distortions will continue after the growth slows down.

The USDA Zone numbers are actually based on the lowest temperature in the winter. They have nothing to do with the highest temps in the summer. As a result, the zone numbers are especially useful for perennials, and assessing freeze tolerance. While those numbers can give a general feel for summer gardening conditions, they are by no means accurate in that regard. Yep, your soil looks bone dry. But I don't think that's your problem. Tomatoes will wilt significantly when they dry out. Yours aren't wilted. I have to suspect a fungal infection for the brown spots. But yes, container plants ALWAYS need added fertilizer. I'm surprised they grew that big without any. Garden soil has organics that, if outside, degrade and release some nutrients, but a container plant doesn't have the biological activity to do that degradation well. Tomatoes lacking nutrients just don't grow.