What state are you in? All zone 8's are not created equal. I am going to say that overwatering is one of your problems. The tomato plant looks like "toast" to me and I would recommend starting over. The lettuce looks fine and the pepper should be on life support. Here in Western Oregon Zone Eight we are having unseasonably warm and dry weather. But it is still too early to put out unprotected tomato plants. Those nights when it was "37ish" it might have been colder in your garden and the tomatoes don't like a chill and will react as in your photo. (FYI: if you put your zone and location in your profile, it will appear on all your posts and give everyone a better chance to help)

It looks like it might just be sunburn or nitrogen burn to me. I'm assuming you've not shown the undersides of the leaves because they look normal? Are you wetting the leaves when you water/fertilise? To be honest, I don't have much experience with diseases on basil, but I used to wet the leaves when I first started gardening and they quickly burned. It looks similar to what I can see in the photo.

Hi Lisa and John First thank you for helping me out. The soil is 1 year old (I've moved her into a much bigger pot in June), but I think it's of wrong type (will fix this tomorrow). I didn't fertilize through the winter, but have started lightly one month ago with a German bio fertilizer (Bio-Zitruspflanzendünger). I've also looked at the bottom of the leaves as you asked and on some leaves have brown spots. Now as branches had these when I bought it I fought that it was part of the tree. Now if I use my nails on the brown spots they get off very easily. Are bugs attacking my plant? Brown spots. Removed the brown spots from the branch. Br Waldemar

Hello, what kind of soil did you use? Also in the future only repot when they are in the growing season. Aloe's like to be root bound and do not require a large pot. The larger the pot the more the soil retains water and can lead to root rot. I only water my Aloes about one time a month in winter, then every 2 weeks in summer. Aloes retain water very well in their leaves and need a lot less water than people think. I keep mine in a south facing window where it gets direct sun in morning. Sometimes their leaves will do weird things, but that doesn't necessarily mean something is wrong. Just be very careful with watering and only water it when the entire pot of soil is dry. You can never hurt it by under watering, but Aloes are prone to root rot with too much water. It doesn't look bad to me in the pictures, just give it some sun and let it dry put completely.