burst pipe in garden (pictures)

cherry2017

this tap was installed in green house, a few weeks ago, when the weather below -3 degree, a few day later it was bursting water from joint see picture,
How to fix it? Do I need replace the joint? 
the plastic pipe jointed with copper pipe, what the best solution for fix them togther, the concern is freezing temperature and too hot in the summer in a green house.

GrubbyGirl_2

Others will advise on fix but in future it's best to turn off the water to that pipe in the winter and leave the tap open so if there is any water in the pipe it has room to expand if it feeezes

GDB2222

Just buy a replacement 15mm right angle push fit coupler. 

Dustyevsky

My experience with plastic pipe and those fittings is that they survive the usual freezing we have here, which has been as low as -10c. It's likely the copper pipe is your problem, and that isn't required for the vertical section. You can replace with plastic into a purpose-made plastic tap fitting. You may need PTFE tape to get a good fit for the tap itself.

Plastic pipe above ground is supposed to be black and UV stabilised, rather than the blue used by most people. However, buying 25m of black just to do a few bits above ground isn't very MSE, and in practice the blue pipe seems to last for years anyway.

As the other poster says, turning the water off and leaving taps open prevents likely damage to the metal fittings and pipe from hard frosts.

Eldi_Dos

Why is screw head sitting proud of the wood, if it is touching pipe that is not going to help in sub zero temperatures.

FreeBear

Dustyevsky said: Plastic pipe above ground is supposed to be black and UV stabilised, rather than the blue used by most people. However, buying 25m of black just to do a few bits above ground isn't very MSE, and in practice the blue pipe seems to last for years anyway.

And if it is subjected to freezing temperatures, it should be insulated - Use the 25mm thick stuff rather that the cheap 13mm lengths from the likes of Screwfix.

Ganga

And do not worry about the heat in summer ,it will not be a problem.

Postik

As others have said, lag the whole pipe and bend with insulation and turn off the water supply to it when winter hits (leave the outside tap at the other end open after isolating the water).  As to how to fix it, I'll leave that to more experienced people...