Grow from seed
Plug plants and larger potted ones are widely available from garden centres and online plant specialists but you can also sow your own seeds with great results. It’s very easy to do. You can sow directly in the soil from March to June for flowers from July to September.
● Make sure the soil is well prepared and weed free. It should be fine and crumbly. Use a rake to level the surface.
● Water the soil with a fine spray before planting the seeds. Sow them thinly over the surface. A finger-width apart is usually about right for small seeds. Use a rake to gently cover the seeds with soil.
● Label the patch of soil so you don’t forget where you’ve planted your seeds and remember to keep them watered during any dry spells.
● It won’t be long before your seeds start to sprout. This can be any time after as little as a few days depending on how warm it is. Cover with a layer of horticultural fleece if you want to speed things up.