How long to wait to spray Cornell on new roses?

trberry5(6b)April 21, 2004

I just received 3 new rose bushes and am wondering if I need to wait to start them on Cornell. I mean, i don't know what the nursery used on them and don't want to risk burning the leaves if they've used sulfur or something.

What do ya'll usually do?

Thank you for reporting this comment. Undo

If these are potted and already leafed out you could start spraying now, if its necessary. If these are bare root there is no reason to spray until they leaf out.

    Bookmark   April 23, 2004 at 7:13AM
Thank you for reporting this comment. Undo

I disagree on the basis that research has shown that blackspot is carried in lesions on the canes. This is all the more reason to spray the canes thoroughly whether they have leafed out or not.

    Bookmark   April 23, 2004 at 5:19PM
Sign Up to comment
More Discussions
Rose pruning help
Hello all, Thanks for the wonderful forum, I really...
2015 Seed Selection
Ace Hardware called me when their Botanical Interests...
developing soil
We moved to central TX, a beautiful area but soils...
just checking in
Hi Strawberry and Jim~ Happy New Year! My little jewelry...
Leaves on bushes
I have been waiting for the leaves on my rose bushes...
© 2015 Houzz Inc. Houzz® The new way to design your home™