Rose Tree Problems

[chokkie]

Hi Green fingered ABers, wonder if you can help, please. I've just noticed that my three new rose trees (which have flowered nicely this summer) have got a lot of yellowing leaves - all three have the same, sort of yellow and green dappled ... is this rose blight? or if not, do you know what it might be? And what can I do to get them to return to "good health" again, please? Hope someone can help, many thanks, Cheers, Chox.

[Buenchico]

Rose black spot???
https://www.rhs.org.uk/advice/profile?pid=270
(NB: Don't just go by the photo. Read the 'Symptoms' section see how the appearance might vary across different types of roses)

[chokkie]

Thanks Buenchico, will compare the picture with what our rose leaves look like tomorrow. Might take a picture of our leaves and upload them to gardening AB .... but thanks so much for the link, very useful. appreciate your help, cheers, Chox.

[Togo]

Garlic spray, will sort out Black Spot. if you cant make it you can buy it under the brand name Garshield. Plenty of water helps and you must feed roses for the best results, and dead head to encourage new buds. "She who must be obeyed" buries banana skins under the blooms as well.

[chokkie]

Have been watering them all the time in this stifling weather! Will have a look for Garlic Spray (thanks for the recommendation, Togo). Do I spray it on the leaves/all over the flower heads and leaves? here's a photo which I've just taken. Interestingly, one of the three rose trees seems completely unaffected. Blow it, can't seem to copy and paste the photo, sorry. but it looks pretty much like the one in the link sent by Buenchico.

[Buenchico]

To show us a photo, go here:
http://upl.co/

Click the green button, navigate to the location of your file and double-click on it. When you see a thumbnail of your image, copy the top URL from the list and paste it into a post on this thread.

Easy, peasy!

[Togo]

On the foliage Chox. Won't hurt unopened buds either.

[Prudie]

All my roses have blackspot even though I spray them with Roseclear. Leaves go yellow and blotched and then fall off. It's a pain.

[choux]

Hi Chox, if it is black spot I have to disagree with Togo if he is saying that it will not affect your roses generally. Black spot will weaken roses by reducing plant vigour.

It is essential to gather all leaves and ensure that they are disposed of safely e.g. in your dustbin. They must not be added to garden compost as the fungus spores can travel. I won't burn mine even.

Spores are apt to travel especially in wet conditions so I always gather infected leaves before spraying on a daily basis. Let's hope it is not black spot for it is virtually impossible to eradicate it from your garden.

[Togo]

I did not say that Black Spot would not harm Roses. I advised Chox that spraying garlic solution was better on the foliage but would not harm unopened buds. Read the thread before making unnecessary comment.

[choux]

Togo, in my post I did say: "...if it is black spot I have to disagree with Togo if he is saying that it will not affect your roses generally."

NB "...if he is saying..."

I do not consideer my post as unnecessaary comment. Have a nice evening ;)

[chokkie]

Just a thought, do you think that the trees were infected before we even planted them in the ground? i.e. they were infected while they were still at the nursery where we bought them from?

[chokkie]

Answering my own question now about whether we were sold poor quality standards ... no, it's just one of those things and is probably due to the humidity. I have advised to feed them now (despite the rain outside), and to spray them with whatever when it's dried up and the leaves are dry. Really and truly, there's nothing much I can to do avoid getting this again next year etc. So as Prudie says, it's a pain! Apparently about 99% of all roses get black spot (and there is another disease which causes similar "symptoms"). Anyway, thanks to all for all their suggestions. Going to feed and spray them over the weekend. Cheers, everyone, happy gardening! Chox.