Yogurt

coppersend

This question has probably been asked on a number of occasions
so I'm sorry to ask again.

When is the best time to paint yogurt onto concrete planters and seats
to give an aging affect and encourage moss and fungi to form.

What type of yogurt (If there is a type) to use

Mel

Lizzie27

Probably in the spring when it's dryer otherwise I would imagine it will just wash off. You need ordinary Greek yoghurt, sometimes mixed with manure to help the aging process. I've never found it works terribly well though.

Fairygirl

Never had to do it - if I sit pots outside for any length of time, the moss and algae just appear naturally 
I think I'd try it at a cool time, but damp. Probaly just missed the best time for this year, so maybe late winter into spring, depending on your conditions. You could do it now and just shelter the pots from the worst of the weather - a quiet corner or under the eaves or similar. 
Natural yogurt always seems to be the one recommended. 

Obelixx

Natural yoghurt, unpasteurised if possible, and do it in spring when things are growing.

Don't put it on the seat where you park your bum as it'll rub off and turn your clotehs green in the process.

Rubytoo

And for now if you have a shaded damp north facing corner or spot (if they are movable) leave them there over winter.
I added the moveable bit when I realized you said seats....and concrete.
No matter how much you want a mossy effect I just realized a hernia is not the way to get them.

Fairygirl

I missed that too Ruby2! I thought it was pots.  Apologies 

Nothing worse than a mossy hernia at this time of year...

Hostafan1

If you stand still long enough "in these parts", you'll be covered in moss in no time.

Rubytoo

I am Lichen your sense of humour

coppersend

Thanks folks
I think I get the message
LOL
xx

Fairygirl

I know Ruby - I stayed outside too long, and look what happened to me...

Dovefromabove

And remember when @Hostafan1 showed us his seat?!