I planted a spiderette two years ago and have little to show for it. The
plant has remained a bunch of rosettes without long leaves. I've tried
varying light, water, fertilizer, location (including outside last summer);
but nothing works. Any idea how I can persuade the plant to grow?

I posted a picture of the poor thing on alt.binaries.pictures.gardens,
titled "Spider plant woes - better pix", if you want to look at it.

Bewa my first picture post is too big for easy downloading - look at the
second one.