If it's well established I'd leave it alone. They're not hard to find and not expensive shrubs. You could get another one or something different.
If it's quite young, has more than one stem from below the ground and can be dug up without serious damge to the roots you could try sawing through the middle. I have done this with success but I haven't tried it with hypericum. You need a good saw but you won't have such a good saw after the job.
I have attacked my hypericum at all times of year - I reckon it's indestructible! It grows so fast and after leaving it to its own devices for a few years it swamped everything around it and drastic treatment was needed. It grew back in no time and there are always plenty of little seedlings you can just pull up and replant.
Verdun, I have a hot dry area in the strip I cultivate just outside my fence, facing south west, next to the pavement; it is a nuisance to water, so this Baptisia Australis sounds good for next to the hypericum. Would it survive the winters in the Fens? The Hibiscus is ok out there.
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http://www.bbc.co.uk/gardening/plants/plant_finder/plant_pages/403.shtml
In the sticks near Peterborough
Good thinking batman-
-if that is it-then you can hack it back happily
Dont do cms either
If it's well established I'd leave it alone. They're not hard to find and not expensive shrubs. You could get another one or something different.
If it's quite young, has more than one stem from below the ground and can be dug up without serious damge to the roots you could try sawing through the middle. I have done this with success but I haven't tried it with hypericum. You need a good saw but you won't have such a good saw after the job.
In the sticks near Peterborough
That is the one I have and it tolerates hacking back, I will be doing mine once the SNOW
stops.
On another thread...
These plants can get big. But are very easily controlled, simply by hacking back as much as you like.
As you can see, the bees love them.
A very easy way to propagate is just to look for little seedlings, which can often be found near the plant.
I have attacked my hypericum at all times of year - I reckon it's indestructible! It grows so fast and after leaving it to its own devices for a few years it swamped everything around it and drastic treatment was needed. It grew back in no time and there are always plenty of little seedlings you can just pull up and replant.
Verdun, I have a hot dry area in the strip I cultivate just outside my fence, facing south west, next to the pavement; it is a nuisance to water, so this Baptisia Australis sounds good for next to the hypericum. Would it survive the winters in the Fens? The Hibiscus is ok out there.
Also, Verdun, does it actually flower at the same time as hypericon?