Do you have to blanch ramps before freezing?

I'm curious, when it comes to preserving ramps for future use, is it absolutely necessary to blanch them before freezing? I understand that blanching can help maintain color and texture, but is there any risk to simply freezing them raw? And if so, what are the potential drawbacks or consequences of skipping this step? I'm looking for the most effective and efficient way to store ramps, so I'd appreciate your insights on this matter.