On 28/03/2019 11:16, Andy Burns wrote:
Nick Maclaren wrote:

Andy Burns wrote:

I'm trying to figure out what size of trees would need to be planted now
such that they reached approx 3.5m in three years time

It's a rare temperate tree that will put on more than 40 cm of height
a year, and 20-30 cm is more common.

Thanks, that could save maybe 30% by buying one or two "sizes" down, but
it adds up over 50 trees ...

I see, to recally there being advice out there to buy smaller trees, on
the grounds that they establish faster and catch up with the slower to
establish larger trees. (Possibly this only applies to bare-rooted trees.)

Can you find a trustworthy nurseryman?

--
SRH