AboutMike Mascio Expertise I have been an avid gardener since 1985 and an AllExpert volunteer since
1998. I specialize in soil preparation, seed starting and plant
propagation, flowers, vegetables, and general landscaping. I am a strong
advocate of the square foot method of gardening and the use of organic
controls for pests and diseases.
I have 2 tomato plants in my vegetable garden outside. The second one wasn't very healthy when i got it, but now its growing nicely.
However, grew small white bumps on its stem, and now they've turned into a gather of white spikes about 3 mm long, with black tips. And now there are white bumps on my healthier tomato plant as well.
I'm worried that this might be bad for the plants, and if it can spread to the other plants, so how can i get rid of it?
Thanks for your help!
Answer I sounds like your plants have contracted a fungus disease called powdery mildew. This disease can be controlled by spraying the plants with a copper-based fungicide. I personally use a product called Soap Shield, which can be reviewed at the link below.
