The trick to this level is to move the spider as soon as you can, from his lower nest. Get him to the top nest and then boot him out of that one as well. If you take too long, too many moves doing that, you will end up with a lot of snowballs falling down and no decent crops to move. If that happens, just quit and start again.I managed to get 3 stars without companions, I don't think they helped at all as you need too many crops to activate them.
Once the spider is in the lower left nest, its easy enough to remove him, you just need to keep making falling crops to add points onto your remaining board crops, to get enough to fulfill the requirements.
Check for possible rows of 5 crops if the chance comes up. If nothing else it removes a whole line giving more room for falling crops.