ST johns wort

[Fucksandflowers]

Can I plant it against a sunny wall in somewhat rocky ground?

I want a nice floriferous plant to cover the wall, the longer the flowering period the better.

No honeysuckle as I have it on another wall, it's nice and healthy but it never flowers!

And no jasmine as I absolutely despise the smell!

Once you have St Johns Wort it seeds everywhere. I would not see it as a wall covering plant. Have you thought about a climbing Hydrangea or repeat flowering rose?

No, I'm not a massive hydrangea fan tbh but I wouldn't definitely say no to hydrangea...
The climbing hydrangea is white isn't it?
Or is it available in other colours too?

I adore roses!
So maybe....

I nicked two small non flowering twigs off a big St. John's wort bush coming back from the shops just now.
I've popped them in a pot of soil, maybe they will root for me....

There's more than one St John's Wort, but none of them are climbers nor do they grow particularly tall. I presume you've got Rose of Sharon, Hypericum calycinum, the one with big flowers?

Which way do your walls face? Honeysuckle likes sun, so if where you have it is a wall facing north, it wouldn't flower much.

There are also several species of jasmine, including a yellow one with no fragrance whatsoever which flowers for about 6 months - unfortunately those 6 months are Nov through to April which I don't think is what you're after!

What people often do to extend flowering period is to have two climbers, eg a repeat flowering rose, and a clematis, perhaps one of the ones that flowers in late summer.

Or you could train a pyracantha up the wall (it'd need support) and have flowers in spring and bright orange or red berries in the autumn.

The whole point of climbers is that they want sunshine, so they clamber up other plants till they get to the top - but they usually like plenty of moisture at their roots. So if your soil is not just rocky but also dry, you might like to try to rectify that.

My cuttings came off a St. John's wort that looked like this.
The nice wide rounded flowers type.
I don't need it massively tall, 3 - 4 foot would be adequate, I'm looking for width rather than height really, something dense and full of flowers.

Darn, that could be it with the honeysuckle...
it's on a north facing wall and lightly shaded.
My alpine strawberries and saxifrage love it there, I have roses growing underneath the honeysuckle that flower lovely for me, I thought it would like it there being a woodland plant!

And the wall I want to put the St. John's on is south facing

Tropeoleum ciliosum might do well there - a climbing relative of nasturtiums, with smaller flowers, bright yellow. Better to run through some other climbing plant but will possibly add colour when the other isn't flowering. Also Tropoeleum speciosusm, bright red flowers, but not sure of its winter hardiness.

We planted 5 climbing roses a couple of years ago and they grow fast. Very beautiful too.

Of all of them, madame alfred carriere is the most beautiful, the most subtle pink, could almost be white till you're close to it. Give it a google.

fucks yes, that's Hypericum calycinum.

Honeysuckle is a woodland edge plant rather than a woodland plant. Moist roots and head in sun.