How early can you determine sex

[The Stoned Jester]

Usually about 30ish days from seed and most plants should start to show, I've had a super quick ~16 days boy show up once.

 

A technique someone else here mentioned but I haven't tried it yet is to take a cutting like you would a clone and stick in a small glass/jar of water and put it in a dark cupboard for a week, this should technically 'shock' the cutting into showing sex.

[Cantgrow]

Ok, so binned that male and planted two more 4 weeks ago.

They are just over 100cm tall and showing no signs of being male yet.

Are they now at the size where they should go into the ground? Or should I wait?

I'm actually planting two a month to see what the ultimate starting month is for my area.

First two, September, one died other male.

These two are October planted and looking ok so far.

[Cantgrow]

Sorry, got another question?

Is now a good time to nip the top off to get it to split into two?

[billygoat]

I reckon get em in the ground. Topping is up to you, but might as well start after they adjust to the move.

 

Are they really a metre tall ?

[SOA]

The pic shows them at 10cm

[billygoat]

That's what I thought ! . But it says 100 !

[Cantgrow]

The pic shows them at 10cm

I just realised I wrote 100! Should have checked it

They are 10cm

[Harry Bootlace]

9 weeks after sprouting (100% outdoor), 2 show female pre-flowers, 2 have nothing.

is that normal?

[The Stoned Jester]

Well remember outdoor plants are technically a once a year flower, so they are gonna be super slow to show / start flower.

[Harry Bootlace]

when I USED to grow 20+ years ago, never heard of pre-flowers,

we spotted males by the plant shape/growth. which was/is hit and miss, 

 

strange though one I have that shows female pre-flowers, I would have PULLED because it looks "male" , - lanky, 

 

ahh well.