When you do get a spike - YES, they definately grow towards the light. You can shape them pretty much any way you like by turning them as they grow. Those of us that grow in homes usually end up with the spikes growing more sideways and down (unless you turn them and cause them to loop completely over the plant - which I've also done), whereas those with greenhouses or skylights can get them to grow more vertically. As others have noted, I rather like the graceful sideways cascade of blooms - looks rather more natural to me than the spikes that have so much vertical - but train as you like....
