Now is the perfect time to experiment, before the birds take all the berries.
Remove the outer fleshy covering from a holly berry and rinse in a fine mesh sieve which should reveal the seeds. Sow the seeds in a peat-free multi-purpose compost and leave the pots outside as the seeds need a period of cold to trigger germination.
If the birds get to the berries before you, another good way to propagate and grow your own holly is to take hardwood cuttings. This can be done from November until February.
It’s a super simple process. First, cut pencil-thick width stems using secateurs; prune the top diagonally, just above a bud, and the bottom horizontally, just below a bud, leaving around 20cm length in between.
Place the cuttings into a multi-purpose compost filled pot, pushing about half their length into the pot. Then, leave them outside, ideally in a cold frame. However, if you don’t have that, a sheltered spot will do just as well.
You’ll need to be patient though. They’ll take about a year before they’re ready to be moved but, if you keep them regularly watered, you should see shoots starting to appear by next spring.
If you’re taking cuttings to grow enough holly to create a hedge, then a great space-saving way to do this is to dig a narrow trench in a sheltered spot. Put some horticultural sand along the bottom of the trench, and then place the cuttings all the way along it, spread out at about 5cm apart.