Hay

[Riles15]

I give my Guinea pigs Timothy hay all the time but they seem to like orchard grass more. Is it ok to give them orchard grass everyday?

 

[Seven7]

My boys get both Timothy hay and orchard hay. Orchard hay is softer than Timothy hay so I lay it for them to sleep on as well, so I put orchard hay on the bottom and Timothy hay on top. They won't have issues with orchard hay, at least my boys don't.

Once I ran out of Timothy hay but had huge box of orchard hay, and they finished the entire box of orchard hay. Now I have both Timothy and orchard hay.

 

[Piggies&buns]

Orchard hay is absolutely fine.

This guide explains some of the differences between different grass hays
A Comprehensive Hay Guide for Guinea Pigs (incl. providers in several countries)