Ask a Question forum: Re Hollyhocks & Rust

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Jun 1, 2014 5:28 PM CST
What are the treatments if any for this? Does anyone know if it carries over into saved seed? I have a single plant of Nigra (black) that I have been saving seed of this stock since 2006 first few years no rust then I didn't plant any for about 3 years found some old seed and planted it not many came up this one plant is double stalked and loaded with blooms I hope to save the seed but if the rust carries over then I will not. Plant is over all healthy except the leaves nearly bare now what few leaves are left are covered with this rust.
Any replies welcomed
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Name: woofie
NE WA (Zone 5a)
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Jun 1, 2014 5:48 PM CST
You need to spray for rust as soon as the plants emerge. At least, that's what I found when researching the problem with my own hollyhocks. I believe it's environmental, not carried in the seeds. I could be wrong, tho. Rolling my eyes.
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Name: Lori
Calgary, Alberta, Canada
Plant Identifier
Jun 1, 2014 7:12 PM CST
That's right - rust is a fungal disease, not transmitted genetically (i.e. by seed).

Alcea ficifolia is said to be resistant to rust - can't say, personally.
Name: Jennifer
48036 MI (Zone 6b)
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Jun 2, 2014 7:45 AM CST
I had to stop growing Hollyhocks because of rust at my current house. Never had any problems at my old house.

A nice friend just gave me five seedlings. I need to find them another home. I'm not going to even try again at this place.

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