I've had good results with wettable sulfur and Safer's Insecticide Soap in a pump up sprayer. Agitate often. When I had hybrid teas, I'd spray every week or 10 days when it's humid, less and way less when it's hot and dry.

As much as I like them, tea roses are, for me, too much trouble. They did great organically, but the spraying is just too tedious over the long term. More power to yeh.

rangier

Rose Defense II by Greenlight is typically recommended for PNW rose growers. It is an organic control based on Neem oil and pyrethrin and has both fungicidal and insecticidal properties. Apply early in the day to allow the product to dry on the foliage.

And keeping the roses in the best possible growing conditions will go a long way to slow disease and insect problems. Full sun, plenty of air circulation, organically enriched, well draining soil and periodic deep watering during summer (avoid getting water on the foliage). Use an organic rose fertilizer (Dr. Earth, Whitney Farms, Terosa) early in the season and mulch to control weeds. Planting the roses in a mixed planting rather than in a dedicated "rose bed" also helps to halt the spread of insect and disease problems from one rose to another.

The spores for blackspot need about one hour in "free" water in order for them to germinate. If that "hanging drop" at the tip of the leaf stays for more than an hour you can expect blackspot. So, apply irrigation to the roots of bushes. Change out the mulch at least once a year. Make sure that the mulch layer is thick enough and the lowest leaves on the bush are high enough to prevent the upward splashing of rain or irrigation on to leaves of the plant. The mulch layer is considered to be the biggest pool of infection. This has worked for me on two rose bushes in the front yard. I faithfully remove each and every blemished leaf every time I use the front door. I never have had to spray anything on them but Mother Nature bats last.

A couple of simple, homemade, sprays that ben very effective are either 1 teaspoon of baking soda mixed in 1 quart of water, or a 50/50 mixture of fat free milk and water. Either of these sprayed every 5 to 7 days on infected plants has stopped Black Spot, and the same sprays applied every 7 to 10 days has prevented Black Spot.

What is wettable sulfur? Hey I have used Dr Earth this year and Tesora. I met the Tesora lady, the owner and she is really great. I also pick any blackspot I find. What I have not done is mix flowers. My rose bed has only roses. This is my MIL's house..we have been caring for her for 7 years. She is just about gone..sadly. But I will not be sad when I pull these nasty fruit trees and can plant more roses. I will try the product you guys mentioned. I do wonder about the alfala tea mentioned in here. Do any of you use that? My roses look okay for the crummy weather we have had so far..but I do have some leaf hoppers and aphids and some black spot. I try very hard to just water the roots of my roses and not get water on the leaves. Any more tips?

Aphids can be controlled with a sharp stream of water to knock the wee buggers off the plant. Leaf Hoppers are usually not much of a problem, except on plants not very healthy.
Always start any insect pest of disease control program with
1) what is the real problem?
2) does this problem really need control?
3) what is the least toxic way to control this problem?
4) Apply that least toxic solution.
5) reevaluate. did this work? do I need to do more? What more do I need to do?