What causes rust spots on tomato plants?

Answer by  ramoskenneth285 (631)

There are three reasons why rust spots occurs in your tomato plants, these are excess of humidity, warmth or moisture that have plagued the plant.

Answer by  86bells (41)

The reasons that such rust-like discoloration comes on any foliage, including tomatoes, can be narrowed down to three: excess humidity, warmth, or moisture that have plagued the plant either before or after the plant was purchased. Often the combination of any of these three reasons will produce a fungus that appears in rusty colors on the leaves.

Answer by  AlleyCat (96)

Several factors can cause rust spots on tomato plants. The most common factors to these spots are enviornmental issues such as too much rain, humidity or wind that have blown the contaminated spores from one plant to the next.

Answer by  TwoToneDodge (2204)

Tomatoes can become infected with a rust like disease. Often time sit occurs on water spots on the leaves. Edema can also be to blame which is unfortunately an environmental problem.

Answer by  mahee (720)

Several factors can cause rust spots on tomato plants. The most common factors to yjese apots are environmental issues such as too much rain, humidity, warmth or moisture that have plagued the plant.

Answer by  champaign9497 (11977)

These can be caused from a they get a pest on them and it eats just the top layer of the skin and it leaves the funny rust colored spots.

Answer by  Latha (264)

The infection of fungai or bacteria are causes to these spots. Next cause is due to the environmental problems. Heavy rainfall is another cause of these spots.

Answer by  Anonymous

The rust spots also could be a calcium def.