Right, I planted them today so I'll let you know how I get on. It was harder than I thought!
The liner thing kept falling out or leaving gaps for soil to fall out. And I was being -hindered- helped by DD who wanted to bury them.
I hope they don't mind a bit of handling as it was quite a rough ride at times!
So, I put little takeaway tubs in the bottom and some feed and water granules. And the plan is to nurture them better than my actual babies.
Thanks again!