Did this Spider Plant (Chlorophytum) send out a stolon to produce clones because it was under stress?
It was a 4" pot size plant acquired at the same time as this one that has not produced any stolons. Since it is "fat, dumb and happy" in its soda bottle sub-irrigated planter (SIP), it probably has no need to do so at this time.
What caused the stress you ask? It was growing under an adjustable (CFL) desk lamp. The adjustable extension arm wasn't tight, the lamp lowered and crushed some of the leaves. It has taken a while for it to grow and rehab from the accident.
What was interesting is that it almost immediately sent out a stolon and clones. Survival alert, survival alert...make clones! Plants don't have brains but they sure do have some survival smarts. There will soon be a bunch of new Spider plants on my light garden shelves. Just what I needed. Not! So, I'll find a home for them.
Incidentally Spider stoloniferous is growing in a SIP made from a repurposed/recycled blue Borsec bottle I pulled out of the trash at a luncheon. It wasn't mine. I drink good old NYC water straight from the tap.