On 03/05/2018 13:47, Chris Hogg wrote:
On Wed, 2 May 2018 19:56:42 +0100, Chris ] wrote:

When runner bean seeds are pushed into the soil does it matter which way
up they go?

I guess that in nature they might fall flat on the ground, but some say
they should be on edge with the "eye" down.

Any knowledge of this?
Or - what do you do - and how well does it work?
Any controlled experiments?

Not a veg grower, and certainly not runner beans, but I really can't
believe it makes a ha'porth of difference which way up you plant it.
The bean will sprout, and the shoots will turn in whichever way that
they evolved to do, root downwards, stem upwards.

They know which way to grow!

Positive phototropism
Stem tip grows towards light To get maximum light for photosynthesis

Positive geotropism
Root tip grows towards gravity More chance of finding moisture