garden spiders killed our plant?

[carolwashy]

I have recently noticed one of my plants has been looking unhealthy for a few weeks now. After watering the garden tonight, we have found around 20 spiders emerged from under the leaves.
I have covered the plant with ant powder, hoping to stop a spread to further plants. The spiders are about 1cm across, with white/light brown bodies. The plant they have infested I do not know the name off but has lived in our garden happily for 2 years now. It has red, almost purple trailing leaves, and blue flowers which shoot upwards.

Can anyone help me with what this could be, if my plant has been killed by these and what we should do next?

[Hawkwalk]

spiders dont eat plants so unlikely to be causing the problem. They may well be feeding on insects that are eating your plant and causing the problem. Look more closely and see if you can see anything else on it.