Your photo and description indicate Septoria leaf spot, which is very common on Rudbeckia and is prevalent in Illinois. The disease begins on lower leaves and progresses up the plant but does not ...

Black spots on tomato leaves are usually caused by fungal diseases like Septoria leaf spot or early blight, which thrive in warm, humid weather and can reduce yields or kill plants if untreated. Treat ...

Answer: It sounds like the problem with your tomatoes could be septoria leaf spot, which is a common tomato disease found in Minnesota. The Brainerd lakes area has had warm, wet, humid conditions, ...

Hello, Mid-Ohio Valley farmers and gardeners! Humidity and rain seem to be the theme this week in the valley. I have seen some corn starting to tassel and it won’t be long till many home gardeners are ...

A third disease, late blight, is a less common but much more serious infection that occurs during cool, moist years. We won’t have to worry about that this year because of the hot, dry summer we’ve ...

As the first few leaves begin to turn from green to gold, you may notice a number of aspen trees have black spots on their leaves. Though there can be several reasons for these spots, it is most ...

Foliar leaf spot diseases and blights of tomato plants are common problems for tomato growers in Delaware and the Mid-Atlantic States. Pathogens survive in plant debris or weed hosts, and are favored ...

On our tomato plants, the bottom leaves have solid brown spots and spots with beige centers. What do I do? Tomato leaves get several leaf spot diseases. Some start at the bottom of the plant and get ...

If the leaves on your tomato plants look like they are trying out for a part as a Dalmatian pup in the school play, trouble lies ahead. Caused by fungal infections, if the black spots spread, they can ...