Storing in plastic ziplock bags is a very bad idea because they attract trichomes electrostatically. The environment inside is just not good enough for ideal storage.
Unless you are going to store bud for many years glass jars with rubber seals (e.g. Kilner and Le Parfait) are ideal. The bud continues to cure, improving taste and smell. I don't smoke bud until it has been curing for at least 9 months. Of course to avoid going without for extended lengths of time I need to procure/grow bud perpetually.
There's a big difference between bud cured for just a month and bud cured for a whole year.
I have to admit I have frozen bud stored outdoors (frosts outside) and it was fine. It's not something I would recommend though. If you are freezing bud it's the frequent freeze-thaw you want to try to avoid.