Delphiniums need space to grow so they're not often included in container planting ideas. However, it's not impossible to grow them in pots, particularly some of the smaller varieties. If you do ...

This should provide your pots with all the goodness they need for much of the growing season. If you want to feed your ...

When roots appear at the bottom of the pot, remove bag or take out of propagator. Ease off the pot and gently tease the cuttings apart, keeping as much compost as possible around the roots.