Zinnia seedlings.

Hi all,
I’ve had a go at growing some Zinnias from seed for the first time this year.
From the photo, when would you say would be a good time to plant them out into the borders? Ready now, few more weeks, month etc?
Thanks in advance.

 

I'd be hardening them off outside they appear a bit leggy, but a couple of weeks in a sunny sheltered position should firm them up,the pots are probably no where near full of roots.

 

Cheers Pete,
So basically just take them all out of the greenhouse now for a while?
Do seedlings tend to get “leggy” when they are kept in a greenhouse too long?
Thanks again

 

Yes they grow soft, you seem to have some heavy shading, but fresh air while the weather is good should strengthen them up, they grow slower but stockier.

 

I would 'pinch' them;remove the central growing tip. this will stimulate growth of side shoots to provide more bushy plants which will stand up better.
Also, if you have space, move half the pots leaving a pot sized gap between them. This will give the plants more light to develop. also a liquid feed* may 'green' them up to advantage.
*such as Westland Boost.