What is wrong with these hollyhock leaves ?
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yellow dots allover the leaves
9 answers
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That appears to be rust spots which is a fungal disease. Remove and discard as many leaves as you can and apply a fungicide to the leaves making sure the entire plant is covered including the soil.Repeat applications will most likely be needed.
Janet Pizaro
on Sep 18, 2016
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I had a friend tell me to spray them down with diluted milk in water (skim milk). That was of course after I gave all of my hollyhocks away! Give it a try.
Lori Patterson
on Sep 19, 2016
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Hollyhock rust can be found about anytime but is more prominent in the spring and fall. Rains, heavy dews, and cool temperatures provide the ideal environment for rust to develop and spread. Once hollyhock rust begins in the spring, it will continue to be a problem throughout the summer. Hollyhock rust usually does not kill the entire plant but will cause yellowing and early leaf drop. Rust will overwinter in infected plant debris and new spores form in the spring. Breaking the disease cycle can help reduce hollyhock problems. Fall clean up - cut stalks to ground level, clean up fallen leaves and remove from the area. Avoid crowding plants, watering early in the day, and water on the leaves. These practices to reduce moisture from staying on leaves for long periods can discourage the disease. Also removing the first leaves that have rust in the spring will help reduce the disease problem. Fungicide treatment in early spring when the first leaves are expanding. Fungicides containing the chemicals chlorothalonil (Daconil) or mancozeb (Dithane) can be used. Spraying should be continued at the intervals recommended on the label through early July. Sulfur (dust or liquid) is effective but should be aimed at the underside of the leaves. Do not apply sulfur when temperatures are above 85° within 24 hours of an application because it can damage the leaves.
Amy Ferguson
on Sep 19, 2016
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In the Fall I came home from work and discovered my husband dug up all of my Hollyhocks as they had dropped their leaves and were just stems. I was speechless. Keep thinking I'd like to plant some more as the blooms were so large and pretty.
Sue Sanders
on Sep 19, 2016
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Hi, think you are fortunate. My hollyhocks are always eaten by some bug which almost always calls for something like ,"bug-b-gone " I don't really like to use it. My leaves always look like yours and then comes holes. This only recently started so I'm going to listen to the other folks who respond to your post. Good luck.............
Ann R.McDermand
on Sep 19, 2016
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fond an article for organic control of rust. Won't kill it but can keep it from spreading to new growth. http://homeguides.sfgate.com/organic-rust-con...
Deanna Nassar
on Sep 21, 2016
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I think you've got it ! I grow garlic to so I'll just keep a few cloves for this. How exactly do you do this . Do you grind them up oruse garlic powder ?
Ann R.McDermand
on Sep 21, 2016
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thanks I took off most of the leaves and the season is almost over so I left the stem and flowers the seed will drop an grow next spring I have found that it takes one year to germinate and then the next year they grow tall and flower ! this is the first time the leaves have gotten rust and my daylilies got rust too.
Bonnie Bassett
on Sep 21, 2016
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Thank you, Sue. I hope to have wonderful hollyhocks next year.
Ann R.McDermand
on Sep 22, 2016
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