Desperate to grow double hollyhocks!

Hi!

I've been wanting to grow or have double hollyhocks that grow to 5 foot tall especially the scarlet variety and white! I have ALWAYS failed in getting them to bloo,. germinate etc. I brought 25 once as plug plants , they grey to 1 foot and neber bloomed and just faded. I've just brought these seeds' Hollyhock - Summer Carnival Mixed - 320 Flower Seeds'.

I've really struggled to get hold of potted hollyhock plants . Just don't seem to have any in the garden centres or online. So, any tips would be great,
Any tips on how best to get them to germinate?
Is there a service where you can just give your seeds to someone and they will raise them for you into strong plug plants?
I think these will bloom next year if plant them now,

 

@Shaneoak
I've grown hollyhocks since I was at school and never really had a problem with them. They are biennial/short lived perennials, some varieties are prone to rust. Currently I have "Creme de Cassis" in a couple of spots in the garden these have been around about four years now and when I notice they've died out I'll start some more off.
I sow the seed in spring time in a seed tray, onto some moist potting compost cover with grit or grit/perlite mix and keep in a cold greenhouse out of full sun. Prick out into a more roomy tray or small pots, harden off and place outside to grow on. I then plant them out early summer and leave them to get on with it.
You can sow in summer and plant out in autumn; not something I've tried though.
Sorry I cannot give you any more specific advice for your situation.

 

Some advice here if you have not already seen it.

Blackstart

How to grow hollyhocks / RHS Gardening

 

Thank you i'll give these a shot