Question
for the last 3 season my climbers start getting the black spot fungus then it spreads to the other five plants I have,I sprayed and fertilized as recommended on the fertilizer and when the black spot started I picked the leaves off. but it got a head of me, now the climber is almost completely bear and my other roses are getting their, is it to late this season to treat this problem? what else can I do to prevent this next year. the climbers were all ready there when I bought the house. I added the other  4 three years ago. should I just take the climber out? and move it or try to aggressive treat next year?

Answer
To fight the enemy one has to know something about it so you can attack it's weakness. The spores of black spot float around in the air and when it rains or is windy, they are forced to the ground. If they land on a rose leaf then they start their life cycle by pushing their roots below the surface of the leaf. When they have killed that part of the leaf that is when you see a black spot. Too many spots on the leaves will kill the whole leaf. Good success has been attained by using a dormant oil spray in the spring before the roses leaf out. Then you kill the spores that have over wintered on the canes. The weather does have something to do with this disease as fungus like damp and humid condition to grow well.  There are also certain colours which are far more prone to black spot than others, such as scarlet reds, apricots and yellow. You can also start to spray with any rose fungicide just as the roses are starting to leaf out in the spring, then you kill the spores that have over wintered on the canes. Spray weekly for a month and then just once a month and you will see a big difference in your roses. Starting to spray when you see black spot is too late to save those leaves but if you spray now weekly with a fungicide until there are no more spots it will not cure it only keep under control. Good success has been had by spraying the roses before they leaf out with a dormant oil and sulphur spray. This is mainly sold for trees but there are instructions on the package on how and when to do it for roses. It is also an organic solution too. Hope this works