Today I brewed my first 5 gallon batch. A pumpkin ale! Super stoked, but it was hard to avoid getting some of the undissolved hops in it as I transferred the force chilled wort to the primary fermenter with a siphon. Will that affect my primary fermentation? I originally just wanted to do a primary even though it calls for a secondary because the brewer thought it was too pumpkin pie-ish. But, if I need to transfer it anyways to make it cleaner I will.
You'll be fine. I don't think it will affect your primary fermentation to any noticeable degree as far as homebrewing is concerned. You'll need to siphon again to bottle or keg. You can also use cheesecloth or a nylon bag to hop with to keep this to a minimum. I'd love to see your recipe, I'm big on pumpkin beers too.... tis the season!
Hops don't dissolve. They basically come in 3 forms (whole, pellet and extract which is very rare for homebrewers). The whole hops are easy to spot (they'll be those leaves floating on top of your wort). Pelletized hops break up and are normally found in the bottom of your boil kettle. If they make it into your fermenter, it's not a problem. Heck, you can even drop and once or seven into your secondary (this practice is called "dry hopping" and it's common with IPAs).