Why did my garden tomatos turn yellow?
Answers:
Some tomatoes are ripe when yellow ( low acid) if the kind you planted are supposed to be red .Either there not ripe yet , or if there soft and appear ripe. 1 of two things, they were miss labled or you have high acid content in the soil. use lime and a 10-10-10- fertilizer for next crop. And rotatate your crops , as tomatoes are high in acid, so dont plant in the same place every year
Other answers:
Did you water them?
Did you water them?
they are ripe... take them off the vines as soon as you can.. and taste them.. are they awesome.. I want some...
They go from green to yellow to red. Wait a few more days & they will be ripe.
Hybrid acid free are ripe when they turn yellow. Maybe that's what you have.
WATER!!
There are several different varieties of tomatoes. If you mean that the tomato itself is yellow and not the plant than I am assuming that you bought a variety that bears yellow tomatoes. They are less acid than the red variety and actually very good.
I am going to go out on a limb here and suggest you are talking amout the plant, not the tomato. Your plants could have blight.
The most common is Septoria leaf spot, which appears toward the end of July. It first appears as small round black or brown lesions on the lower leaves. It works its way up the plant starting at the bottom.
The second most common is Early blight. It appears about the same time as Septoria, and is characterized by concentric "target" shaped lesions.
The least common but most destructive is late blight. It usually appears in August and the first symptoms are watery lesions on the lower leaves. Late blight will destroy an entire crop within a week.
The prevalence of these blights is affected by seasonal conditions and varies greatly from year to year. Heirloom tomatoes seem more susceptible.
Septoria does not usually affect the fruit. We have gotten very large crops of excellent tomatoes even on plants with a substantial infection.
The most effective way to treat tomato blights is to prevent them. Here is a list of do's and don'ts:
* Mulch to prevent splash-up from rain.
* Don't water overhead.
* Don't water in the evening.
* Give your plants plenty of space.
* Don't work around your plants when they are wet.
* Don't plant tomatoes in the same place where tomatoes, potatoes, peppers or eggplants were grown last year.
* Clean up all debris in the fall and don't compost it.
* Prune out diseased branches promptly and destroy.
* Keep weeds at a minimum.
* Plant resistant varieties when available.
These recommendations are especially important if your crop has late blight. In that case, skip planting tomatoes, peppers, potatoes or eggplant in the same location for at least one season.
It will greatly reduce the Septoria in tomatoes by using landscape fabric as a mulch. It can be purchased at garden centers.
Using fungicides for tomato blights is not generally recommended. By the time gross symptoms appear on your plants, it is too late to apply a fungicide. If you do use a fungicide, you must use it at the very first sign of the disease.
Try Ortho multi purpose fungicide (Daconil 2787) or any other product containing chlorothalonil. It is a preventative spray and will keep the disease from spreading to more leaves.