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BS - What Happens if I don't spray

4 years ago

New Rose grower here. Noticed a 2nd rose with some BS. Have not sprayed anything at all yet....

Somewhat holding off to see what happens if I don't spray

No harm no foul on year 1 of planting right ? If it defoliates, it will bounce back just fine next spring 2020 ?

BTW, should I give it a light feeding. I'm tempted even though my head tells me to leave it alone and let the roots sort themselves out. They are on the 3rd flush for this years new planting

Featured Answer

seil zone 6b MI

4 years ago

To spray, or not to spray, that is the question. There are many considerations and only you can decide that for yourself. I'm on the lake and I choose not to spray. I get lots of BS and I have learned to live with it. I have found that with time, as the plants mature, many of them have stronger immune systems and no longer spot as easily.

You can use organic fertilizers any time. Fish, seaweed, manure, all feed and enrich the soil which is always good for the roses.

If you decide to spray stay away from the combo, 2 in 1 or 3 in 1, products. Find one that is strictly a fungicide.

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Comments (8)

Patty W. zone 5a Illinois
4 years ago
A lot depends on where you live, the rose and how long it is without leaves. This is a simple way to say this but the leaves are your plants food factory and the roots are like the plumbing. Leaves turn light into energy providing much of the plants food source. When roses go without leaves it weakens the plant. Should this happen to often it will kill your rose.
henry_kuska
4 years ago
There may be places where a certain rose will die if not sprayed (and no other negative conditions). I do not know that from personal experience. It is my impression that without spraying in about 5 years the individual rose builds up a tolerance to blackspot if other conditions are favorable..

Example:

" I have a rose named Midnight Blue and for the 1st 3 yrs. had blackspot. However, by the 4 year, it had built up a resistance to b/s. The same thing may happen with Betty Boop - sometimes you just have to give them a chance to build up their immunity. It is my understanding it takes 3+ years for a rose to reach maturity."

https://garden.org/thread/view/78215/Best-performing-roses/
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pink rose(9b, FL )
4 years ago
For myself ,I fertilize new planted roses with diluted liquid fish or seaweed . If I dont spray , the plant gets week and leggy .
a1an
Original Author
4 years ago
Sofar, there is 1 rose that gas got a leggy shoot but I associated it with it just growing.....as while there are signs of BS on it's leaves, no de-foliage yet...
alameda/zone 8/East Texas
4 years ago
I have a friend who sprays every 7 days, fertilizes every 3 weeks. His roses are fabulous. Due to being really busy with several other things in my life.......I have watered well but not sprayed and only fertilized once. I can tell a huge difference in my roses and his. In a couple of weeks, my other responsibilities should subside and I am going to get back on schedule. From my point of view - the care my friend has given his roses has greatly rewarded him. Simply watering, in my opinion, is not enough to bring out their best.

Judith
a1an
Original Author
4 years ago
What BS spray should I go with. Organic / in organic. I know Bayer is highly frowned upon on this forum ? Their concentrate looks ok ?
jim1961 / Central Pennsylvania / Zone 6
4 years ago
last modified: 4 years ago
I have had roses that BS in the first season but get much better other seasons... of coarse vise versa too...lol...I'd wait and see how bad it gets then decide...

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