I also had pretty bad black spot on a few, so do I start with some fungicides too? I prefer to do as low chemical as possible but don’t want to loose any bushes

Lets do black spot first. If you have a Lowes half way close, the sell Bayers Fungicide. Follow directions and spray every two weeks.

Bone Meal---Spread a light layer around each bush and if all the roses are in a "bed", spread it all through the garden.

I've never used Dr Earth Bud & Bloom or DA Rose Food. Just follow directions on the labels.

I don't know what you have for fish fert., but I use Fish Emulsion. I use it every two weeks from mid April to late May and again from September till mid Oct.

Next year use your Granular fet. along with fish emulsion. Your roses will be fine. Just make sure they get watered. Water is the life blood of the rose.

Good advice here! I'll add that, whatever you're feeding, you can expect bloom to slow down in the heat of summer with fewer blooms. The blooms will usually be smaller in size and lighter in color. I keep the water coming during that period but I back off on the feeding. That's exactly what Ken is saying and he's in a similar zone to yours.

Granular fertilizers should be applied around the drip line; no need to go right in next to the base of the plant. I pull the mulch back and scratch the granular food in lightly, then replace the mulch. (Obviously I have less than 100 roses or no way would I be able to do all that.)

Newly planted roses take different amounts of time to establish, and you should wait until they are producing new growth before you feed them.

Jetehel,

You couldn't get better advice than what Ken gave you. Do what he says.

Black spot pressure is a given for many of us. The Bayer product Ken recommends works very well for me. It's easy to apply.

All I can add to Ken's advice regarding fertilizer use....when in doubt, use less. The roses themselves kind of tell us what they need. Follow their lead, and don't slack on watering. Roses are water hogs. Of course, don't overdo it!

Moses