Posted: 27/08/2016 at 10:52
we have had very dry weather so maybe they were struggling and have dropped their leaves early to protect themselves. New trees need regular watering for the first season or two to help them get established.
Give them a good watering now and continue to do so if we have any prolonged dry periods Autumn/winter and I am sure they will be ok.
Also are they planted in a lawn? developers seem to always do that. If so, I would remove the grass around the base of the trees so that they have a clear ring of about 1m diameter. This will reduce competition and help them get established. Putting a mulch on the cleared area will also help improve the soil and reduce moisture loss - give them a good water before applying the mulch.