I've had a pretty good run with my basil and sweet marjoram, but they're both starting to yellow and the basil is going woody, despite my cutting it back quite hard and quite regularly. They're in pots on my balcony.
Is this just end-of-season blues, or is there anything I can do to keep them cheerful, and - in the case of the basil - compact, for the next month or so. I suspect that I overfed the basil earlier in the season. I'll bring the marjoram in for the winter I think, and will replace the basil with a new batch in spring.
Thanks a lot,