Australian and New Zealand Gardening: Is this a deficiency or just cold ???, 0 by 77sunset

77sunset wrote:
I have some cuttings of what I was told is Brug. Versicolor and they have done well up to now. It has been very cold here and although they are all in the greenhouse, I wondered if the cold was stating to affect them. the leaves as you see have a yellow/green edge which to me usually means a deficiency . can anyone advise what i should do ?
I have other well grown cuttings in there from chrissy They are Suavolens and her Grand Marnier look alike. There are also some cuttings of what I was told was an apricot flowered Angel The leaves on these are much larger than the suavolens and more furry . There seems to be no problem with any of these other ones.
Should i just leave things go until Spring or feed something to them now ?
Any help much appreciated.
Jean.