Question
This is a two or 3-part question. I am going to start keeping bees, and I do not want to harm them w/pesticides, etc., so I wish to be as organic as possible in my gardening...I'm ordering nematodes to control Jap beetles, but how can I keep the ones that hatch from eating my roses w/out using sevin, etc. Also, how can I control/eliminate blackspot without using a fungicide (in keeping w/my wish to go organic)? What is a great organic rose food? Thanks.

Answer
From my reading about bees, they will not tolerate any chemicals at all so going organic is wise. However going organic mans you have to start organically as it is almost impossible to have roses that have been in the garden and expect them to survive without any problems organically. Some roses are just prone to black spot plus other diseases and won't be a success with organics. Usually when you go organic you sort of start from scratch and select only those roses which will do well with no spraying. Japanese beetles are a big problem organically and I am afraid the only way to keep them off your roses is to cover the rose bushes with fine netting. The other is to get up early in the morning and pick the beetles off by hand as they are sleeping at that time of the day.
Because black spot is a fungus, the spores are floating around in the air. When it is windy or it rains, they fall to the ground. If they land on a rose leaf then they start their life cycle. As you can see you can only keep it under control.
Any organic rose food will be extra expensive as you pay for both the name rose and organic.. So just use alfalfa meal, cottonseed meal, fish meal, any of the types of meal around the base of your rose bushes. Also bagged steer manure, bonemeal and chicken manure. All roses need is something to munch on monthly until August, then they want a rest.
Going organic is a study in itself but it is very rewarding as you never have to worry about harming any insect or bird or even yourself.
I have a couple of hives next door and because I don't use any chemicals, the  garden is loaded with bees and they  just love the single or semi double roses best. it is easy for them to get the nectar where a double one is too much trouble. here is my website and I describe which roses are disease resistant.
http://www.theoldrosarian.com/