One nasty thought I have had on the subject of this 'variagation' was nematodes. I am fortunate not to know much about them. Reticulata Iris will sometimes show leaf tips with virus like symptoms if they are too dry as they start growth, as will Narcissus. Narcissus, Galanthus, Muscari and other bulbs may look chloritic or have streaky leaves if they have been planted too deep - the leaves usually green up in a couple of weeks I have also noticed in both pogon and oncocylus Iris that occasionally when they start their early spring growth spurt, the leaves are a little streaky. Later the colour tends to even out and the leaves are superseded by new ones. The plants do not always present these markings in following years, and the flowers show no sign of virus. Peter (UK) On Sun, Nov 17, 2013 at 3:39 PM, Talley Ho <talleyho69@hotmail.com> wrote: > we see this effect on a regular basis. > It usually presents itself in four-year old or older plants as they make > their first push after “dormancy.” We > used to isolate plants that displayed this behavior (hoping they were > sports) but > have found that it is inconsistent, not repeating itself season to season, > or > in fact, leaf to leaf. At times it has > been so pronounced as to resemble the pattern and color of watermelon > peperomia > leaves (for those of you who know this plant). > One observation we’ve discussed is that it seems to be the hardiest of > bulbs/plants that tend to show the longitudinal striping. > >