How can I cure an unwell peach tree due to curly leaf?
Curly leaf can't be controlled at this time of year (spring). To treat it spray in the winter with a clean-up fungal spray over several weeks. You can expect your plant will naturally shed its leaves over summer, due to curly leaf, and it is likely new leaves will appear. At the end of the season, remove all of the foliage as the plant sheds it leaves.