Tag Archives: autumn colour

Plant Collector: Koelreuteria paniculata

Koelreuteria paniculata - it may be a long wait for flowers in our climate

Koelreuteria paniculata – it may be a long wait for flowers in our climate

There is nothing rare about the koelreuteria which goes by the charming name of the “Golden Rain Tree” or, apparently, “Pride of India” despite the fact it comes from China. The golden epithet does not refer to the lovely golden leaves which colour-up even in our temperate coastal conditions, but to the summer flowers. Alas we have not seen these on our tree, despite it being about five metres tall and well over a decade in age. It appears that we may not ever get many flowers because this is a tree adapted to an inland or continental climate. It likes a cold, dry winter and hot, dry summer – neither of which it gets at our place. However, it is pretty enough with its fresh spring foliage and its golden autumn colours for us to keep it in the garden.

When the flowers pass over, it develops showy pinky-brown seed pods – referred to in the literature as “inflated and bladder-like”, which sounds less appealing than they look.

There is another koelreuteria species, K. bipinnata, which is sometimes referred to as the Chinese flame tree. It is not as common as K. paniculata and is more spreading, growing wider than it is tall. Its flowers, foliage and seedpods are similar although it usually flowers later in the season, heading into autumn. It is probably just as well it is not so common here because it appears to have invasive habits in certain climates and would probably prove equally problematic in areas of this country.


First published in the Waikato Times and reprinted here with their permission.

Plant Collector – Taxodium ascendans "Nutans"

A blaze of autumn colour on Taxodium ascendans "Nutans"

A blaze of autumn colour on Taxodium ascendans "Nutans"

Nubbly knees

Nubbly knees

We will take spot autumn colour where we can get it here. Big mass displays of fiery autumn shades are more typical of drier, less windy climates with sharp seasonal change (hotter summers and colder winters) and predominantly deciduous native flora. Think the maples of Canada. But this taxodium puts on a splendid orange display. It is a conifer, believe it or not, and yes there are a few deciduous conifers. This one comes from the south east of USA and makes a handsome, columnar tree with short branches, a little upwardly curved. Our tree is about 10 metres high after 40 years. It is notable also for its ability to grow in waterlogged conditions, as will its close relative the swamp cypress or Taxodium distichum. Taxodiums are also renowned, along with a few other swamp trees, for pushing up nubbly protruberances above ground. Attached to the roots, these are commonly referred to as knees and you certainly can not mow beneath these trees. Apparently the knees only appear when they are growing in wet conditions – this tree is by a stream- but it remains unproven why these growths occur.