I think Fertilome systemic contains propiconazole, same as Banner, which is used by some here. A similar (perhaps slightly better) ingredient, tebuconazole, is in Bayer Rose, Flower, and Disease Control, available at most Lowe's. Because Bayer is easier on the plants, it can be used weekly at times of heaviest disease pressure. But even used every two weeks, it provides good control for me and most folks. Recently a poster remarked that biweekly use of Bayer didn't control blackspot well on one plant that is especially susceptible to disease.

I don't think spraying the ground would make any difference. It spreads mainly from leaf to leaf.

Be sure to follow the precautions on the label when using synthetic chemicals.

Hi Aggie! Congratulations on your triplets; you are one busy mom.

I use 'Bayer Advanced Disease Control' for Roses which is a concentrate and can be purchased at Lowes. I spray every 7-10 days and it controls BS very well on my 250 roses, the majority of which are HTs. I don't spray around the ground; I don't think any other folks here think there is any value to spraying the ground either. Just make sure you get the leaves and canes sprayed well, and keep up the spray program unti your first freeze.

-terry

To kill what blackspot you have now, spray with Mancozeb three times 3 days apart, then spray your regular fungicide as directed on the label. This'll kill the existing blackspot but be aware the spots will remain on the leaves as nothing will remove them.
Mancozeb can be purchased from Rosemania along with many other fungicides
The Fertilome Liguid Systemic Fungicide only contains 1.55% of the active ingredient, propiconazole, while Banner Maxx contains 14.3%. The dilution rate is two tablespoons per gallon of the Fertilome product compared to 1/3-2/3 teaspoons per gallon of Banner Maxx.
Make sure you're diluting it at the proper rate or it won't be effective.

Here is a link that might be useful: Rosemania fungicides