Big trees for autumn colour

While most people want smaller trees, AB BISHOP celebrates the benefits of large feature trees that will provide beautiful autumn colour for generations

Most of us will have experienced the joys of majestic deciduous trees. We’ve climbed them, and picnicked and daydreamed beneath them. We particularly love them for their summer shade and glorious autumn colour. The idea of planting one for our children or grandchildren to enjoy is tempting, but it’s not a decision to make lightly.

Large feature trees need large gardens to ensure they can be planted in an appropriate position. Their roots will spread at least two to three times the tree’s height and could, over time, cause paving or concrete to lift or crack. And while roots don’t actually break water pipes, they will grow into the tiniest split, eventually creating havoc. Plant large trees at least 10m away from buildings.

Research the mature height of your ideal tree to determine where shade will fall throughout the year. You want all the wonderful shady benefits, without paths or the patio becoming a mildew mecca. Be aware that the microclimate around the tree will change, too, and sun-loving plants may need to be moved.

When it comes time to buy, you’ll find potted saplings of various sizes available year-round. Taller trees that are a few years old come with a higher price tag, but bare-rooted stock, which is available during winter, can be as much as 50 per cent cheaper than its potted equivalent. Bare-rooted stock is often available to purchase online as it’s easily posted, potentially giving you a broader palette of nurseries (and trees) to choose from.

three of the best in autumn

There are a number of large deciduous trees that grow very well in temperate and cool zones of Australia, each with unique characteristics. These three favourites are well-known performers that will be loved for many years to come.

GINKGO OR MAIDENHAIR TREE (Ginkgo biloba)

Ginkgos (left) may be slow-growing, but they are reputed to live for 3000 years. That’s a lot of generations to enjoy a tree

you’ve planted, not to mention all that useful carbon sequestering!

Over time, ginkgo trees develop a deeply furrowed trunk and aerial roots. Although you won’t be around to see that happen, you’ll certainly be able to appreciate the golden, fan-shaped foliage that decorates the tree and ground each autumn.

Ginkgos are dioecious, which means trees are either male or female. You won’t know which of these you have for at least 20 years, when they are able to reproduce, but most of the trees sold are male.

The male tree bears small cones (similar to a green mulberry), while the female produces cherry-sized berries that, when rotting, are horridly odorous. On the plus side, both the leaves and nuts are highly nutritious and have been used in Chinese medicine for centuries. Ginkgo tolerates most soils, including clay, and isn’t overly bothered by pests, but it does require protection from strong winds.

WT CT

25m 10–20m autumn to spring