~ From Sunburns to Etiolating

Etiolation is;
 

• when plants grow longer (elongates) to achieve sufficient light. Etiolation is noticeable by long week stems and a paler colour.

Basically what can be said, when regarding oxalis, is that the only species that does relatively well indoors are the Triangularis species. All others will, some more than others, etiolate.

An oxalis friend from Germany explained that they do this, as normal window glass stops ultraviolet rays from penetrating.
So you see, your oxalis will try to find an adequate light source without succeeding, and will just elongate more and more.
 
The only oxalis speicies that can be grown in much shade are the woodlands species; Oxalis oregana, Oxalis acetosella and Oxalis montana. The Oxalis triangularis species, especially the one with purple leaflets or species with markings do well in part shaded areas, and yes, indoors.

This Oxalis tetraphylla was grown outdoor, as you can see, it was grown were half of the plant received sufficient light, and the other did not.

So far I know etiolation does not kill oxalis, but it might cause the bulb to use
extra resources that should have been use to gathered energy for the coming dormancy?
 

Then comes the sunburns.

During the summer, my garden receives direct sunlight the entire day. So far the oxalis that have suffered most have been the
Woodlands and Triangularis species, especially the ones with markings or purple coloured leaves. Therefore it is essential that they are placed on a partial sunny area.

The Oxalis species that seems to be able to stand more sun than others are the Alpines. But bear in mind that direct sun is a big difference when shining in a desert or shining in the highlands of Scotland.

Therefor be careful were you place them till you have a well established acquaintance with your oxalis.

Photo of sunburned triangularis