rose bush problem???

Good evening @phalnoob I photo would be useful my friend if that is at all possible,It could be Powdery mildew which usually occurs in periods of cool nights, humid days and no rain.but on the facts that you have given me this is only a possibility and a not definite answer
I hope this is of some help to you

Seasonal weather: A summer that combines drought with high humidity is an invitation to powdery mildew.Crowded plants: Densely packed plants, overgrown shrubs, or plants under trees, are more susceptible to powdery mildew due to poor air circulation and cool, humid conditions.

 

Hi @phalnoob you are most welcome, this might help you my friend


One of the easiest ways to control powdery mildew is to give your roses a thorough wash at least two mornings a week. A morning bath raises the humidity so powdery mildew spores can't mature. Free water left on the plants also discourages spore maturation. Plants must be dry before nightfall so residual moisture does not provide favourable conditions for spore germination.

Powdery mildew is attracted to lush, new growth. If you have a serious problem year after year, you might want to reduce the quantity of fertilizer applied in January and/or postpone fertilizing until your plants start growing vigorously in the spring.


Solution #2 - The Baking Soda-Vinegar Formula

1½ tablespoonsbaking soda
2 tablespoonsvegetable oil
1½ tablespoonsSafer Insecticidal Soap (or liquid, not dish, soap)
1 gallonwater
1 tablespoonvinegar
Mix together the baking soda, oil, soap, and water. STIR in the vinegar last - don't shake! Pour into a no-clog type hose-end sprayer. If you only have a couple of roses to treat use a hand-held spray bottle. Spray in the morning and when the temperature is less than 80 degrees. Thoroughly soak all parts of the plant. Apply weekly as needed.

If you remember your high school chemistry, when you mix an acid (vinegar) and a base (baking soda) they cancel each other out and you get water that has a neutral pH. So the question is, how does this formula work to kill mildew?

When baking soda and vinegar are mixed they produce water, carbon dioxide (which bubbles away), and sodium acetate (which stays in solution). I found many references to sodium diacetate as a mold and mildew inhibitor in baked goods and some references to sodium acetate as a fungicide. Apparently, the active ingredient of the baking soda-vinegar solution is the sodium acetate.

Solution #3 - The Vinegar Rinse

2 tablespoonswhite or cider vinegar (5 percent)
1 gallonwater
Pour undiluted vinegar into the container of a dial-a-spray hose-end sprayer. Set the dial to deliver 2 tablespoons per gallon and start spraying. Soak the entire plant, making sure to get the undersides of the leaves. Spray only in the morning. Apply once a week as needed until theweather warms up.

 

Good evening @phalnoob my friend no worries any time you need advice or help in any area of Gardening just ask

 

Good afternoon @phalnoob my friend well done ,your roses will repay you for years to come