I know that some of the information I am looking for here is in the monthly 'todo' calendar here but I thought I would start a discussion in case there are others here that would like to know this information. We have an apparent fairly dry but cold week ahead this next week. It will be in the 30s with night time below freezing. Would this be a good time to spray fruit trees or is it too cold? Also, I haven't sprayed anything this year so I am slacking. What spraying would you recommend for

peach trees
apple trees
pear trees
cherry trees
plum trees
any other trees? (Someone else might need to know this)

One of my peach trees always seems to have leaf curl. All my other trees seem relatively healthy. Any information is appreciated. Thanks