I just wonder why you want to pick up the acorns.What are you going to do
with them?
I have 4 oak trees all over 50 yrs of age which shed loads of acorns but
within a few weeks they are taken by squirrels, Jays, pigeons, mice etc,
and I doubt if I find more than about 20 a year trying to grow.

--
David Hill
Abacus nurseries
www.abacus-nurseries.co.uk