December's Flower, and Why Yours Has No Berries
Holly is the definitive Christmas green: glossy spined leaves and clusters of hard scarlet berries, cut by the armful every December for wreaths, garlands and table work. It is one of December's birth flowers.
The single most useful thing to know about it is why so many holly bushes never produce berries. Holly is dioecious, meaning male and female flowers are on separate plants, and only the female berries. A garden with one holly and no male within reach will stay green and bare no matter how well it is tended.
The Christmas classic
Some cultivars berry orange
Bacciflava and similar, unusual and prized
Cream-edged leaves, often berryless males
Ilex aquifolium; the classic spined leaf
Ilex opaca; duller leaves, the US Christmas standard
Ilex verticillata; deciduous, bare stems packed with berries
Cream and gold edged; many are male and never berry
Woody; split the cut end to drink.
Cut holly lasts far longer in water than dry.
Dry wreaths shed berries within days.
The spines are genuinely sharp.
Buy berried holly as late as you reasonably can, because berries drop steadily once cut and a stem bought in late November will be sparse by Christmas. Check the berries are firm and glossy, not wrinkled, and give a stem a gentle shake to see how many fall. Leaves should be deep green and unmarked; yellowing or black spotting spreads. Berried stems cost several times what plain green holly does, so decide how much you actually need before ordering.
November and December, and effectively nothing outside that. Berried holly is one of the sharpest price curves in the trade: it climbs steeply through December and collapses to nothing on the 26th. Plain green holly is far cheaper throughout. Winterberry, the deciduous type sold as bare stems loaded with berries, has become increasingly popular and often costs more than traditional holly.
Hypericum berries give the same red clusters year-round and drop far less. Winterberry is the leafless alternative and reads more modern. Skimmia offers dense red buds through winter without spines. For the structural green, eucalyptus, pine and ruscus all work and are cheaper. Nothing else has the specific glossy spined leaf, which is why it survives in wreath work despite the handling.
Holly berries are toxic to cats, dogs and people. They contain saponins and cause vomiting, drooling, diarrhoea and lethargy, and the spined leaves cause mechanical injury to the mouth on top of that. Children have been hospitalised after eating berries. Birds eat them safely and are the plant's intended dispersers, which is why they are so conspicuously red. Keep wreaths and cut stems away from pets and small children, and sweep up dropped berries.
Holly needs a male and a female plant. Only the female berries, and it needs a male within pollinating distance. Many variegated garden cultivars are male and will never produce a berry however long you wait.
Dry holly sheds fast. A wreath misted every couple of days holds its berries far longer than one left to dry by a warm door.
It starts dropping the moment it is cut. Late is better than early, even though the price is worse.
Because it is male, or because there is no male nearby to pollinate it. Holly has separate male and female plants and only the female produces berries. Many popular variegated cultivars are male and will never berry at all.
Yes, to people, cats and dogs. They contain saponins and cause vomiting, drooling and diarrhoea, and the spined leaves injure the mouth as well. Birds eat them safely, which is a common source of the mistaken belief that they are harmless.
A deciduous holly, Ilex verticillata, that drops all its leaves and leaves bare stems packed with red berries. It is increasingly popular for Christmas work because the berries are far more visible with no foliage in the way.
Find a florist near you, or keep exploring the flower guide.
Find a Local Florist View All Flowers