Posted: 27/02/2017 at 08:18
It is supported by those who use it successfully. No-one has funded a thorough scientific evaluation because it is not in big commercial interest to do so. However you will find that French gardening magazines publish lunar calendars and Italian seed companies advise which days are best to sow seeds.
It's a system that's been used since Egyptian times but, like any other, you can take it or leave it.
I find I organise my time better in the garden if I discipline myself to stick to root jobs on roots days and not get distracted by leaf or flower jobs and so on. Their are even jobs when gardening with any plant is discouraged in favour of maintenance of boundaries, tools, sheds etc What's not to like?