Hi, I planted some mammoth sunflowers, and up untill now, they have been doing very well. But now some of the plant's leaves are turning brown and brittle. Someone told me that was normal, but I just want to be sure. Most of my flowers are really big and have been doing so good. But I am afraid that now I may be doing something wrong. Not all of them are turning brown like that. But a few are. Please help.

Well, I have pics of those too. It is not happening to all of them, but on some, almost all of the leaves are doing that.

i planted these for the first time this year - do they get more than on flower per stalk? I thought it was one bloom per stalk, but wanted to confirm

thanks! by the way - my bottom leaves are looking yucky too, but the rest of the plant looks great on most.

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Claire

Claire, there are so many varieties of sunflowers. Some get multiple flowers, but my experience has been that with the mammoth types, they just get the one huge bloom. Many birdlovers grow these and save the heads once they mature. They put them out in winter one at a time and watch the birds pick them clean.
I looked at some of my sunflowers yesterday, and some leaves were infested with aphids, others with caterpillars. There are "friendly" sprays I could use on these pests, but I'm not worried...my sunflowers thrive every year, and I have enough room to let them come up from seed as volunteers each year after the first, and I just look for the thickest stands and mow down the stragglers! I have several varieties, and the goldfinches feast on them all.

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Dave
Even my growlights are getting restless!