Neofinetia - what conditions to get larger spikes?

[camille1585]

It's that time of year again, and I see some spikes on my Neos. As during the past 2 years where I've had Neos, the spikes are rather small, with no more than 3-4 buds. Yet I frequently see photos here an elsewhere of much larger spikes. Is this due to them being still relatively young plants (most have 3-4 growths), or is something lacking in my culture?

If it's culture related I'm guessing it might be related to winter conditions. I grow them under lights in the winter, on the shelves with my other orchids (so 18-20°C). I know that in the wild they get a lot of light in the winter and it can be rather cool, but I recall reading that the cool temps weren't mandatory.