Tree chippings as mulch

Its best to leave them ayear to weather down and rot down.
They take nitrogen form the soil during the rotting process which isnt what you would want if placed around borders.
Just put them in a big heap and leave.
You could put an nitrogen rich feriliser down before spreadig fresh chippings, but that isnt advisabel as autumn is coming and you dont want fresh green growth when the weather is starting to turn cooler, eventually leading to frosts.

Leave till spring and then a bit of nitrogen fert, not much and only on soil, then mulch.
Atleast 5, 6 or 7 months after chipping takes you to march time

when i asked the RHS they said 6 months would be adequate. you may find you get small toadstools etc but nothing to worry about. unless the trees have some fungal infection already.

As mulch I would agree with keeping until parlty decomposed, but for paths and areas where nothing is to grow then you can use them straight away.

Yup we put our prunings through the shredder and then onto the paths

Thankyou all very much for your helpful replies..

We'll chip the prunings and leave them to overwinter (at least) in a heap somewhere and spread them on the borders next year. :)

Rosemary