Paul Waites writes
Hi all,

I have naturalised some cowslip plants in my lawn and would now like to
increase stocks....

For the last couple of years I have collected seed without success in
growing plants..

Is there a knack to it?

I have just been using Sifted multipurpose compost so far.

Any theories welcomed as it would be great to have a lot more in my
lawn brightening up springtime.

Sow immediately, keep compost moist, don't bury too deep (just a
scattering of soil on top). I usually enclose the seed tray in a plastic
bag to conserve moisture.

Mine self seed well into gravel paths, so you could try sowing on top of
the soil and covering with a thin layer of gravel.

If they don't germinate straight away, leave them under a bench in a
cold greenhouse over winter and they should start germinating in spring.

You can also divide larger plants in the summer
--
Kay