Euonymus Golden Leaf

Is it common for my golden leaf to shed its leaves? I have just nursed this plant back from last years weather.Thanks to Plantmans info it made a great recovery.Would it be best to cover it with a fleece to protect from the North Easterly Wind away up here in northern scotland.Last year it was almost naked.If anyone can help I would be most grateful.

 

I wonder which one you have.
We have the tiny leaved one Euonymus japonicus Microphylla Pulchellus.
It really suffered in the cold last winter, but has now recovered.

http://www.google.co.uk/imgres?imgurl=http://www.liners.npnurseries.com/resources/Euonymus%2Bjaponicus%2BMicrophyllus%2BPulchellus.png&imgrefurl=http://www.liners.npnurseries.com/32.html&usg=__3CEP6yRCx1CHNzkUcDVA_ia3U98=&h=600&w=650&sz=1684&hl=en&start=0&zoom=1&tbnid=DUbMGHaQIPqWNM:&tbnh=143&tbnw=158&prev=/images%3Fq%3Deuonymus%2Bjaponicus%2Bmicrophyllus%2Bpulchellus%26um%3D1%26hl%3Den%26sa%3DN%26rls%3Dp,com.microsoft:en-gb:IE-SearchBox%26rlz%3D1I7SUNA_en-GB%26biw%3D1247%26bih%3D529%26tbs%3Disch:1&um=1&itbs=1&iact=hc&vpx=128&vpy=172&dur=16&hovh=216&hovw=234&tx=118&ty=74&ei=nCWvTKGcHIvMswbbzLyDDQ&oei=nCWvTKGcHIvMswbbzLyDDQ&esq=1&page=1&ndsp=12&ved=1t:429,r:0,s:0
I agree with shiney, the whole joy with this dwarf Euonymus is that it just glows yellow in the winter.
Maybe just covering it if it gets very cold would help. Covered for too long it will turn green.

 

Thank you for the information.Maybe try some wind break around it,what do you think.I have seen some discoloured leaves now that you talk about disease.What do you recommend to spray with,as I will buy and spray anyway.Its the larger leave model.