Meadow seeds when to sow Wildflower meadow seeds can be sown at any time of the year but usually spring or autumn are best. In winter the risk of extreme cold, wet weather is high which can reduce the chance of a meadow seed mix germinating successfully. Some meadow seeds such as primula species and Yellow Rattle will not germinate until they have undergone a period of winter chilling. For this reason it is sometimes stated that wild meadow seed mixes benefit from an autum
