I had a patch of marjoram for years, but it was killed last winter, with that intense cold. I thought that it reseeded every year, but it must have been a rootstock that grew back, like the sage (which also died, after many years). The marjoram seeds didn't result in the same plants, so next season I'll have to take a trip to Franklinville.
I always used the marjoram fresh, and I would harvest a bunch of it before it went to seed, and salt-layer it, to use the rest of the year. Tried it indoors, but it attracted spider mites, like many plants seem to, despite having no problems outside.