IMVHO...
The concept of planting by moon phases is probably not much (if anything) more than a convenient calendar followed since the beginning of agriculture by farmers who did not have access to actual 'calendars' (since they weren't really accessible to the largely illiterate population). Counting moon cycles from the Winter Solstice will give you a repeatable time at which to plant. Beyond that... I think it's a bit of bunk, lol. But that's just my opinion