GBMD: This Rule in Gardens
I saw this in the shop at Mount Usher Gardens last year. I'd never come across this saying before - a little light googling shows its origin goes back centuries.
I must admit I found it a little confusing because water is a vital component of seed sowing as long as the soil is damp, not waterlogged.
The source link above also says this was a traditional adage for March, because it's the month when seed sowing gets going in earnest. My seed tin is in agreement as I have the thickest bulge of packets filed away for this month.
This is a perfect example of how a rule shouldn't be taken at face value, but the meaning behind it needs to be taken into account. I'm pretty sure the "sow dry" isn't about the soil needing to be bone dry, but referring to the land drying out after the winter wet.This would typically happen in March most years, when the other conditions most seeds need - warmth and longer daylength - are also present.
However, as we know from previous years this isn't always the case, making this a rule which is ripe for breaking.
Which seeds do you plan to sow this month, or are your local conditions pointing to a delay?