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If you are looking for a different place to walk or cycle in Cambridge, try the Maple Arboretum. Accessed at the end of Tiaki Way (off Thornton Road) the track winds between groups of maples from different parts of the world. All 30-plus varieties are named and have been planted by the Cambridge Tree Trust, the younger ones being at the SE end of the arboretum, and the older ones at the NW end, near the green bridge. They vary from large shrubs to what will eventually be tall trees, and are gradually being underplanted with violets, hellebores and Japanese anemones.
The taller ones are mainly from North America; these include various forms of the red swamp maple, Acer rubrum (at their most spectacular in autumn), the sugar maple, A. saccharum, from which maple syrup is obtained, and not to be confused with A.saccharinum, or silver maple, which has a very attractive large leaf with a silver back. From Europe and Türkiye come the purple sycamore, the field maple and the Cappadocian maple. By far the greatest number however are from Asia. From Japan come various forms of the well-known A. palmatum including purple, weeping and coral-barked varieties, and also the beautiful A.capillipes (red snake-bark maple) and A. myabei (corky-barked maple) from Hokkaido. From China we have A. fabri, an unusual evergreen maple (unfortunately hit hard by the late October frost of 2022), the delicate A. pentaphyllum (five-fingered maple), the unique A. griseum with bronze peeling bark, the elegant A. pubinerve with lovely arching branches, and many, many more.
Looking for somewhere different to walk or picnic with family? Try the Meadow Walk in Leamington. Accessed at the end of Alpers Ridge Road, the entrance is beside number 50. A concrete path leads to a gate which is unfortunately kept locked, but next to it is a sturdy stile. After 50 metres you reach a grove of cabbage trees, occupying a small wetland area. The path then climbs through an open orchard section where peaches and heritage apples are available for picking in autumn. At the top there is a seat, the Falcon’s Rest - maybe you will see the rare karearea gliding by.
Continuing on, a number of handsome cryptomeria line the left side of the path while kowhai groves feature on the right, under-planted with rengarenga, in their full glory in early summer. Passing through the open gateway at the end you will shortly descend steeply to a culvert which spans the outlet to another wetland. Here the native jointed rush, oioi, has been extensively planted to slow and clean the water as it flows into the river. Also planted here are flax, toi toi, kahikatea, ribbonwood, cabbage tree, manuka and other wetland species, including Nyssa sylvatica and swamp cyprus to provide autumn colour.
Follow the track, passing maples, gingko, liquidamber, copper beech underplanted with the weirdly prehistoric forms of various prostrate coprosmas. You can continue at the end alongside a wooden fence and over another stile to follow marker posts through the meadows, emerging at the end of Fletcher Place. From there, you can continue on, using the Poets Track. Alternatively turn back to the large grassed area on the left, perfect for a picnic in the shade of one of the many large trees, overlooking the wetland planting below.
This is an 11- minute video showing us clearing growth along the Waikato River bank and planting low-growing grasses to ensure the view of the river is not obscured. We planted a few trees as well. We spent several sessions doing this, and now we await growth of the plants over the next few years. We chose species that will withstand inundation and river currents. The river can rise several metres above the level shown here, through flooding, and the level varies according to the demand of the 7 hydroelectric generators upstream.
The track that goes past our plantin is the Settlers Track, which starts here and ends in Lola Silcock Park.
A number of recent newspaper articles set me thinking about the importance of green infrastructure/trees in our urban environment. The first was a report that in Sydney all new stand-alone houses must have space for the planting of a garden tree. This is part of the council’s attempt to combat climate change; the trees would not only help decrease carbon dioxide levels but, by transpiration, would also cool the air in summer, far better than a shade canvas.
The second began with a report about the removal of phoenix palms from Tamihana Avenue in Matamata. The trees were removed at the request of the residents, apparently because the spines on their leaves can cause nasty infections, and the trees attract pigeons. Sadly however, when the residents were surveyed by council concerning replacements, a narrow majority of those who replied did not want any trees. Now there is an outcry from other residents who say they were not even consulted and they do want replacements.
We need to embrace urban trees; like the air we breathe, they are a commons. Yes, they can be inconvenient – they drop leaves and nuts, they sometimes obstruct views. However both for the mitigation of the heating affects of climate change, as well as for their ability to help reduce greenhouse gases and air pollution they are vital in our towns and cities. It is time our own council had a firm policy regarding green infrastructure in towns, both in gardens and streets. Meanwhile, most of us can at least plant a garden tree. The tree shown here in Vogel Street, but, sadly, recently removed, would have made a wonderful, cool place for children to play and parents to relax on a hot summer day.
Cambridge is justifiably proud of being the Town of Trees, and it is an important reason why people want to move here. The benefits of urban trees are not just aesthetic; now known as Green Infrastructure (as opposed to grey infrastructure – roads, buildings, carparks) trees provide ‘services’: environmental (cleaner air , summer cooling, decreased water run-off, biodiversity); economic (energy saving, improved house values); social (encouraging walking, social interaction, human physical and mental well-being). And the greater the total leaf surface area of the tree, the greater its benefits.
But as new developments spring up in all directions, Cambridge is in danger of losing its treed character. People want affordable housing so compact urban design is desirable. But surely there are better ways to achieve this than what we now see unfolding; individual houses crammed so close there is no room for shade trees in gardens; strips between footpath and road too narrow to support a decent-sized tree, while many of those planted in recent years have sulked, been left to grow unsightly or died.
And now Council, to its credit, is set on encouraging commuter walking and cycling, but who will be tempted to walk from their new home through hot streets to work, shop or school and then trudge home again, all hot and sweaty? We need to plan from the outset for adequate space for decent-sized street trees, determine varieties suitable to the situation, plant with care and then maintain them through their early years. We need better design, with narrower streets to slow cars, wider footpaths, separated by wider green strips for decent-sized trees that shade our footpaths and encourage people to use active transport. There is no need for compact housing to be a desert if we plan for decent-sized street trees from the outset.
This amazing Black Walnut glorifies the entrance to Lola Silcock Park in Bath Street. It stands on the corner of an empty section in Le Quesnoy Place. It is a Protected Tree, but over the years various people have purchased the property, knowing the status of the tree, and have made application to have it removed. Under the STEM system of classification for Protected Trees it scores 138 points, which signifies that the tree ‘has some outstanding features that contribute to the amenity and /or heritage of the community and make appositive impact on the district.’ (Waipa District Council/Notable Trees). This score is also the trigger point to require notification of removal. Any tree scoring between 110 and 137 points can be removed without notification. The arborist’s assessment states that this ‘tree is in good condition and no threat to human, animal or plant life …. In this tree’s current setting the harm done by it is not a significant factor …. Although if the land were to be built on it would require creative planning and architecture.’
Since law changes were made some years ago concerning urban trees, Auckland City has lost more than 30% of its tree cover. Is this what we want for Cambridge, or indeed for our country, as we begin to endure the effects of climate change? Can we learn to accommodate the natural world of which we are part with more creative solutions, instead of just felling trees when they are inconvenient?
24 April, 2022.
A recent Listener (April 9-15) included an article (Over and Out) on the world-wide trend for people departing big cities for smaller towns. Housing costs, Covid-19 and the ability to work from home are part of this trend, but research at Waikato University has detected a further driver. In their “20-minute city” survey they discovered that young and old, single or married with kids, everyone wanted two things above all:
Project leader Professor Iain White is quoted as saying “We’re hoping the 20-minute city idea will influence decision makers, because we are in danger of losing those green spaces that, actually, people value extremely highly.”
Elsewhere I have come across work, which indicates that green space/parks should be within 300 metres of any home; further away and it will not be used. This too presents a challenge to planners and councils. It is to be hoped that Waipa District Council has got this right in the new developments now springing up around Cambridge. If not it is time for urgent changes to planning rules.
Meanwhile Cambridge Tree Trust has recently planted up a small park near its base on Thornton Road. The trees are only a metre or two high at present, but in time we hope it will be a space where neighbours can wander to admire the trees, enjoy the birds, picnic in the shade, play in the open space, gather fruit.
In the depths of Winter, the deciduous trees of Cambridge offer a special seasonal beauty. From a distance, their bare branches reveal the handsome distinctive forms of the various species, while up close and personal, the beauty of their bark stands out. Here are 4 examples:
The Velosolutions Pump Track in Cambridge offers a 196m long track and a 222m jump track joined by a bowl in the middle of the two tracks. It is located next door to the public swimming pools and a skateboard park. It's a great place for the entire family to enjoy and play on, and with a footprint of over 2300m2, the track is the largest pump track in Oceania.
The Waipa District Council asked us to plant the area after the tracks had been finished. We were happy to do so. When our planners went there to survey the scene, they met some riders and got into conversation with them. The result was a plan which puts low-growing plants, mainly grasses, in the heart of the tracks so that riders have good visibility and can avoid accidents. Taller plants, largely camelias, have been planted around the outside.
Here are some photos of us at work:
The Cambridge Tree Trust was registered with the Charities Commission as a Charitable Entity under the Charities Act 2005 on 16 August 2007. Registration No: CC10859