It's a good thing to be prepared and have nothing to do. Now you are ahead of the ball for the season. Spend some of your time now relaxing focusing on you.
Next best thing to do it use this time for networking/cold calling. Find some business's you are interested in working with either purchasing from or trying to work for. Give them a call tell them about you learn about them. The best thing you can have in any business is good relationships. Spend some time working on those.
You are much further ahead than we are right now. Finishing some advertising things, equipment will come out of storage shortly, have a new landscape trailer to set up so on and so on. But the one thing we have been spending time on is building relationships with new customers/suppliers and working on strengthening old ones.