There are several types of conifer that can be brought indoors for decorating at Christmas. Most are available as cut trees, but container grown and containerised trees (dug up with roots and plunged into pots) are also available.
Remember to ask your supplier where the trees come from, and to choose a locally sourced and grown tree, or one that has at least been grown in the UK rather than abroad.
When displaying trees indoors, avoid placing them too close to a fire or radiator, as this will cause excessive moisture loss and needle drop.
Either plant the tree out in the garden after Christmas, or (if you want to bring it indoors again next year) grow it on in a container, moving it into a bigger pot annually until you reach the maximum size that can be moved comfortably (about 45cm (18in) diameter and depth). Ideally use a peat-free John Innes No 2 potting compost.
Christmas trees need very little training when grown outdoors. Aim to maintain an attractive shape, removing any shoots that spoil the silhouette or any strong upright branches that compete with the leading stem. Prune away any dead, diseased or dying branches.
Christmas trees planted in pots will be limited in their size by the constraints of the pot. But if planted out in the garden, Christmas trees can get very large, reaching a height of about 15-20m (50-65ft) in twenty years, and possible eventual heights of about 40m (130ft). The smallest growing Christmas trees are probably Fraser firs, which reach about 7m (23ft) after twenty years, attaining an eventual height of about 20m (65ft), and Korean firs, which reach 4m (13ft) in twenty years and an eventual height of 10m (33ft).
Christmas trees can be grown from seed or cuttings - both semi-ripe and hardwood, but are usually bought as full size trees for displaying indoors.
Picea abies (Norway spruce): Traditional Christmas tree with a good scent, but quick to drop its needles.
Abies nordmanniana (Nordmann fir): Dark green needles that are very slow to drop, but more expensive than Norway spruce.
Picea pungens Glauca group (blue spruce): Blue needles, more prickly than other trees, holds its needles better than the Norway spruce.
Abies koreana (Korean fir): Dark green, slightly curling needles. Excellent needle-holding quality.
Abies fraseri (Fraser fir): Good needle-holding properties, a lovely pine fragrance and the regular shape of a Norway spruce.
There are many attractive options that can be used as alternatives to the traditional Christmas tree, including different dwarf conifers and pot grown specimens. Plant out in the garden post festivities or keep them in containers for reuse next Xmas. Araucaria heterophylla AGM (Norfolk Island pine) is an elegant, sparsely branched tree with distinctive rising tiers of branches. Grow as a houseplant all-year-round, since plants aren’t fully hardy outdoors. H. 2m x S. 1.5m Standout feature: Unique arrangement of branches. Picea abies ‘Wills Zwerg’ is a very slow growing conical conifer with deep green evergreen foliage and a classic Christmas tree shape. Suitable for growing in containers and will eventually growing to H. 3m x S. 2m. Standout feature: Perfect for pots Picea glauca var. albertiana ‘Conica’ AGM is a slow-growing, cone-shaped evergreen conifer with a blue hue to its green needles. Suitable for growing in containers, eventually reaching H. 4m x S. 3m. Standout feature: A classic Christmas tree in miniature. Picea pungens ‘Fat Albert’ AGM is a dwarf conifer with a pyramidal habit of icy blue evergreen foliage. Suitable for container growing and will eventually reach H. 3m x S. 2.5m. Standout feature: Glaucous (blue-green) needles. Sciadopitys verticillata AGM (umbrella pine) has whorls of flattened needles ascending on stiffly upright branches. Slow growing habit that stays dwarf for a long time. Standout feature: Unusual specimen for smaller gardens Laurus nobilis ‘Little Ragu’ (bay tree) is a compact, bushy form of this well-known herb. Use it as an aromatic festive tree and for adding leaves to flavour winter stews. H. 3m x S. 3m Standout feature: Strongly aromatic leaves Cryptomeria japonica ‘Elegans’ AGM (Japanese cedar) with gently weeping branches that hang with pillows of soft needles. Colours up well in autumn-winter flushing copper-bronze. H. 4 x S. 1.5m Standout feature: Vibrant winter colour
Christmas trees are generally problem-free indoors but will lose their needles quickly if placed too close to a source of heat, or if water dries up in the well of the stand.
Christmas trees grown on in pots may only live for a few years, as they are not naturally suited to ongoing pot cultivation.
Not all trees are equal in terms of their environmental impact. Make your Christmas tree more sustainable by choosing an eco-friendly option. While artificial trees can be reused year after year, sustainability wise they are low scorers due to their petroleum-based plastic construction and carbon emissions from transportation. Choosing a real tree, whether potted or cut, is greener when they are reused and recycled. Real Christmas trees also have environmental benefits. A two-metre tree grows for approximately seven years before cutting. During this time they provide a habitat for wildlife, particularly birds, and capture carbon from the atmosphere. Did you know: It’s estimated you’d need to use a synthetic tree for at least 10 years before it equalled the sustainability of a natural tree. However, disposal is still an issue, as it won’t readily recycle.
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