To harvest the ginger, I remove the 'palms' of ginger and allow the soil to dry, then gently brush any remaining dirt off so as not to bruise the ginger. They can be wrapped in plastic wrap and sealed in a freezer bag and frozen for future use. I've never washed it before freezing but if you do, let it dry thoroughly.
To use it, peel it of course, then grate or slice thinly. I've never peeled or grated before freezing. I've also only used the frozen palms for cooking and don't think they'd be good fresh.
Love the ginger and the tropical looking plant.
Another produce plant I've grown is horseradish but when you select that tuber to plant, make sure it isn't coated with sealer. Look for pieces with eyes and perhaps sprouts to plant.
Fun article ~ thanks. Kristi