Common yarrow (Achillea spp.) is an easy flowering annual to grow from seed. Scatter the seeds over the mix and just cover them lightly. They should take around 10 to 14 days to germinate.

Follow our easy care guide and sow during late February ... Fill a 7.5cm (3in) pot with compost, lightly firm and water. Scatter seeds thinly (most germinate so only sow a few more than you ...