What's the matter with my Roses please?

I've got a few Patio Roses in tubs in the back garden. Two of them have started changing colour (the leaves) towards the bottom of the plants. I don't know what's the problem - unless I've watered them too much? I'm (hopefully!) attaching a couple of images. Your help will be greatly appreciated,

Springy
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What are you feeding them with, Springy? They look to me as if they are suffering from some kind of mineral deficiency.

 

Thanks. I've been using J.Arthur Bower's Rose Food. I've used it on all the Roses and it's only these 2 (so far...) that are showing this problem. Just looked in that book 'The Rose Expert' and it's sugesting the same as you've said. What would you do about this please? The top of the plants are fine.

S

 

I rekon you need to acidify the soil, sulphur or sequested iron will help.

 

Crikey Paul, sounds a bit advanced to me. Why should it happen to just these 2? The others are fine..

 

dunno, but yellowing is usuallly iron or magnese deficency.

I spray my roses with sulphur, not only does it prevent blackspot but it also acts as a tonic, keeping the foliadge healthy and maintaining a slight soil acidity.

 

It is available in a pre mixed spray? Can it be used with eg. Rose Clear?

S

 

No need to use it with rose clear as its doing the same job! what I do sudgest is that in the event of apids you mix in some liquid derris or provado ultimate bug clear.

I buy my sulphur from:

http://www.greenacres.eu.com/rose_product_details.php?prodID=38&name=Sulphur Rose

The dilution is two teas spoons to 4.5 litres of water, just a light spray to leaves and soil once a fortnight or weekly when its humid. One sachet should last a couple of years in a small garden.

 

Many thanks Paul, I'll look out for this stuff.

Springy
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Next question then - will the leaves that have turned yellow revert back to green? Also, I'm gonna go and buy something called YELLOW SULPHUR tomorrow (for Roses) can I spray that this week as well please?

Thanks,

Springy
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I've just been out to measure Roses, one's 50cm tall the other 40cm - I would say the Yellowing is almost half way up both of them. I am really new to this Wiseold, and haven't heard of the Epson Salts spray... is it better than the Sulphur spray? I've attached these 2 Roses below:





What do you think please?

Springy
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Yes many thanks, it does help Wiseold, but shows my ignorance!. So, I can spray now even though I've already watered with Sequestrene then?

Springy