Passionflower - failure to thrive

[HaveYouSeenHerLately]

Can anyone help?

I planted two small Morrisons passifloras last year in a south facing bed against a fence. I kept them indoors during May then hardened off and they went in in June (SE).

They were thriving indoors and seemed to cope outdoors initially. They stayed the same size during June and July despite being watered and occasionally fed. The tiny new leaves refused to flourish Suddenly they turned blotchy yellow and keeled over within a week of each other. Meanwhile everything else in the (not overcrowded) bed thrived.

I've never had issues growing passiflora before. It's my favourite, I've successfully grown one everywhere I've lived

I thought I'd try again this year and took cuttings in the autumn from a neighbour's very vigorous, neglected plant. It's emerging from beneath their recycling bin and the soil quality looks questionable

So...I successfully rooted them in water and put them in compost indoors over winter. I hardened them off and planted them in the same position around mid-April (it's been quite mild here).

Yesterday I noticed the small leaves hadn't grown and the plant was looking a bit sad and small. I've taken it out and repotted in compost, brought it inside and it looks much better for it.

How can I get one to grow in this clay bed? I was thinking of trying again in a fortnight - digging a bigger hole and filling with compost. Or leaving it in the pot against the fence to see if it flourishes?

Sorry for the essay, I'm perplexed.

Mine is only just coming to life, I thought it was a gonner, this week I have noticed the first tiny little leaf buds.

Perhaps just leave it outdoors in it's pot and see what happens?

Someone told me to put a few large stones at the base of the stem (I trapped the stem between two house bricks), I think it's to keep it from moving too much in the wind. I'm not sure if this helps, but it hasn't done mine any halm.

Naturally they grow in quite fiercely drained, rocky soils - so if you have heavy clay, digging in a load of horticultural grit and horticultural sand may well help. It may well be a bit cold for tender young plants to get going.

desperately hopes temperature rises soon

Thank you so much, you've both given me hope

Mine's taken about 6 years to really get going and had masses of flowers last year. It now has what I would call a trunk

Mine went mental last year so we cut it right back and moved it, to save the rose and honeysuckle which were next to it - photo won't attach annoyingly.

We thought we'd killed it but it now has some tiny little leaves, so here's hoping it goes rampant again... Its new fence is a bit gappy so we want it to grow for privacy.

Update - it's been in a pot on the kitchen windowsill and is looking much, much healthier thank you all!

I'm not quite sure when to introduce it to the great outdoors. I want to nurture it in the nice, cosy kitchen but that sort of defeats the point

Might give it another fortnight then move the pot outside against the south-facing fence and see how it adapts.