Sweet 100 Cherry Tomatoes Yellowing
I'm growing two sweet 100 cherry tomato plants in 17 gallon containers. They were growing like crazy up until they started to grow tomatoes on the vines. Then the height of the plant pretty much stopped growing, which isn't too worrisome since its probably nearing 4-5 feet tall. This is my first year ever growing tomatoes and i'm really unsure of what is causing this to happen. I have 4 regular tomato plants growing also, which were starting to yellow but now are completely fine and growing many big tomatoes.
It started happening after we got rain for many days and I didn't water them due to that. So I thought maybe they were under watered, so I watered them more.. but now I see yellowing can be caused by over watering too. I've made sure to only water them when many inches of the soil are dry and I've started watering them with fertilizer diluted in because I thought they may have been under fed because I hadn't done that. So, after making those alterations, it's been over a week and I don't see them getting any better, possibly more yellow. One of them has got to have over 100 tomatoes growing on vines, but they are rather small.
We did have really bad squirrel issues with all of our plants, I tried sticking wooden skewers along the outer edge of the plants, which worked to an extent. I also had to put rocks on the soil so that the squirrels couldn't pick them up and dig into the roots. I have no idea if this would add to any problem, I didn't think so but now I just can't figure it out.
Any ideas from you avid gardeners would be greatly appreciated! The picture posted is what the bigger plant looks like, the smaller one has much more yellowing to it. Here are some links to some other pictures of it...