This portion of the damage to the leaves on my plum tree applies, found at http://www.treehelp.com/citrus-insects-diseases/  I will make mention that the leaves are not curled, the outer edges of the new growth of leaves are chewed. Citrus Whitefly The citrus whitefly is a tiny white winged insect that is about 1/12 of an inch in length. It is most commonly found feeding on the underside of the tree’s leaves. When the branches are shaken, the Citrus whitefly will rapidly take flight and can be seen fluttering around the tree. In addition to feeding on the citrus tree, the whiteflies also lay their eggs on the underside of the leaves. When the eggs hatch, the juveniles are small oval, almost transparent larva, which attach themselves to the underside of the leaves and begin sucking the sap from the leaves. As a result, the tree’s leaves begin to curl and appear to be covered with a sticky, sooty mold substance. The mold like substance is actually honeydew that is excreted by the whiteflies because they are not able to metabolize all of the sugars contained in the leaf sap. The honeydew can often be seen dripping from the tree’s leaves and becomes an attractant to other insects such as ants. Over the growing season, several generations of whiteflies can emerge. To effectively control Citrus Whiteflies spray the tree with Bug Buster or Trounce. It is hard to achieve full control of the adult flies, but several sprayings of the tree with either Trounce or Bug Buster will significantly reduce the juvenile population and in doing so the overall population.

I agree with Mrs. G. that the nectarine looks like shot hole but the plum looks more like insect damage. Cherry looks like it has both. You could have a combination of insect damages and shot hole (bateria disease) on all the trees. Some insects feed at night or at times that you are not looking. I attached another post that discussed a similar problem for you to compare. Here is a link that might be useful: Holes on fruit tree leaves

I found this link that might help: Posted by gardenguru1950 SunsetZ16 (My Page) on Sat, Aug 8, 09 at 13:06 The most common "eater" of rose leaves in California is the Bristly Rose Slug, the larvae of the Rose Sawfly. The sawfly is a pudgy little wasp. It lays its eggs on the UNDERSIDES of the leaves and the caterpillars feed on the UNDERSIDES of the leaves. The rose slug is tiny, no more than 1/4-inch long and very slender, and it's the exact same pale green as the undersides of the leaves. Talk about hard to see and find! It's the critter that "skelotinizes" rose leaves. It's pretty easy to get rid of, actually. Almost any good spray will do the job: insecticidal soap, Neem, pyrethrum. The trick is to spray thoroughly UNDER the leaves. Not stand back and spray all over. You have to get UNDER the leaves. By the way, a commonly suggested spray for rose sawfly is BT. It doesn't work. It doesn't work because it's meant for the caterpillars of moths and butterflies. The rose slug is the larvae of a wasp. And I'm not sure of any beneficial insect that preys upon it. As for your rose buds, Applenut has a good idea. Go outside late at night with a flashlight. The critter most likely is an earwig, sowbug or pillbug. It also might be a slug or snail. Joe Here is a link that might be useful: Bugs that eat roses' leaves

I think the damages on the leave look like the work of worms/caterpillars. Many work during the night. If you go out with a flashlight, you may catch them in action. Hope you compare those bugs with pictures of ladybug's stages. Floral is probably right.