Arboretum team blog

Every year in the Arboretum we plant around sixty new young trees. These are to replace old trees lost and also to add diversity to Kew's tree collection, which currently numbers around 14,000 individual trees. Most of these are grown in our own Arboretum nursery, as seed raised plants, from natural source, meaning they are grown from seed legally collected in the wild, and from seed donated from other botanic gardens and arboreta around the world. We also grow many from vegetative material i.e. grafts and cuttings.

Usually the trees are small and easily manageable, requiring only normal hand tools to lift, move and to plant them.

Plants lined out in the Arboretum nursery for future plantings (Image: Tony Hall)

Newly planted young tree in Arboretum (Image: Tony Hall) 

We also plant much larger trees, bought in from UK nurseries. These trees are usually around 10-15 metres tall and weigh around three tonnes.

Over the last ten years we have been replanting some of the gaps left from losses of mature trees that grew along our historic vistas which were designed by William Nesfield and originally planted in the mid-1800s.

The vistas make up a triangle consisting of Syon vista, lined with evergreen holm oaks, Cedar vista, the longest of the three vistas, lined with cedars, and Pagoda vista, lined with deciduous pairs of trees, with a secondary vista of cedars.

The old photo below shows the original planting of the Pagoda vista, planted with its matched pairs of broadleaved trees flanked with a secondary planting of cedars (Cedrus deodara), and showing the old tea pavilion, top right, which was burnt down by the suffragettes in 1913! On that spot now stands the Pavilion restaurant.

Original planting on part of Pagoda vista, late 1800s (Image: RBG Kew)

This year we are strengthening the 850 metre-long Pagoda vista. The large tree being planted here is an American tulip tree (Liriodendron tulipifera.) 

Part of Pagoda vista showing area needing new vista trees (Image:Tony Hall)

Jerry and his JCB, helping out with tree planting! (Image: Tony Hall)

We decide the previous year which areas need replanting and then source the trees from large tree nurseries. Deepdale Trees is our main supplier, they will find what we need and then grow them on for us until we are ready to plant.

Unlike our normal tree planting, which is all done by hand, big trees call for big machines, so from digging the hole to positioning the tree it is all done with machines. These easily cope, making the job both quicker and less strenuous!

The large tree pits, though, are finished off by hand, ensuring the correct depth and final position of the tree.

Arboretum staff Ed and Duncan hand-finishing a planting pit (Image: Tony Hall) 

Tree in position, lined up along and across the vista (Image: Tony Hall)

Trees arrive on large lorries, usually two or three to a lorry depending on size.

Vista tree delivered on articulated lorry (Image: Tony Hall)

They are then unloaded and delivered to their new home, to planting holes measured to exactly fit in, both with the tree opposite and those along the length of the vista.

Happy in its new home - the finished job. (Image: Tony Hall)

New vista trees strengthening the heritage landscape (Image: Tony Hall)

Once we are happy with the trees' positions, they can be back filled, have a new mulched circle, and take their place in the future history of Kew's vistas. Hopefully for generations to come.

- Tony -

Every year I try to get away to the mountains of Andalusia between January and March, and have done so for the past ten years. I get a bit of winter sun, although there wasn't much of that this year, but more importantly I go to see the flora of this area.

The Mediterranean garden at Kew was designed as a result of my trips to Andalusia and when it flowers in our spring, I get a second spring!

I have a real passion for Narcissus and there are so many that flower in the early part of the year. I stay in a local friendly hotel, Hotel Dehesilla, situated in the mountains, close to many great walking locations. They are used to used to wet, slightly eccentric people looking at plants and birds!

Narcissus baeticus                 The sweet-scented Narcissus jonquilla

These are just two of the many that flower at this time of year. Most are yellow, but there is also the small white-flowered paper white, Narcissus papyraceus, and the white hoop petticoat flowers of Narcissus cantabricus, as well as Narcissus tazettta, with its white 'petals' and orange cup.

Other early flowering bulbs include Muscari neglectum, the small blackish-blue grape hyacinth with its white edge, and Ornithogalum reverchonii, a rare Andalucian endemic.

Grape hyacinth (Muscari neglectum)              Ornithogalum reverchonii

Southern Spain has been very wet this year, but still warm. This has meant that the spring season is ahead of where it should be. The Frittilaria below would not normally flower until April, but I found plants already in seed at the beginning of March.

Two other really attractive spring flowers are the Spanish periwinkle Vinca difformis and the Andalucian storksbill, Erodium recorderi which produces carpets of flowers in their thousands.

Fritillaria lusitanica              Periwinkle (Vinca difformis)

Andalusian storksbill (Erodium recorderi)

This is also a great time and place for orchids. They start to flower in February and with over thirty species, will continue right through the year, peaking around May.

The giant orchid (Barlia robertiana)      The sombre orchid (Ophrys fusca)

I always try to visit local Botanic gardens when I'm abroad and on this trip I visited a new garden for me, the Jardin Botanico de Cactus y otras Suculentas.

Once a private collection, now open to the public, this botanic garden is close to the Natural Park, the Sierra de las Nievesand has over 2,500 species from around the world.

The Botanic Garden of Malaga is another wonderful garden to visit. Again, once a private residence from 1855 it changed hands in 1911 and was purchased by the city in 1990 and opened to the public in 1994. It has some of the best trees I have seen in any botanic garden. If you ever have a few hours to spare before a flight, it is only 10 minutes from the airport by car, with free parking.

The Botanic Garden of Cactus and other succulent plants          Malaga Botanic Garden

A trip to the mountains in this area would not be complete without mentioning the fauna. Vultures and eagles are a common daily sight whilst out walking. Tarifa, the most southerly point in Europe in the province of Cadiz, is on the main migration route of birds and butterflies from Africa. With the wind in the right direction, thousands cross daily during spring, heading for various destinations in Europe.

Wild Spanish Ibex                                              Spanish Festoon

If you are really lucky you may spot some of the Spanish ibex (wild mountain goats) or if you are extremely lucky the rare mountain Lynx.

I have been fortunate to find their tracks, but look forward to seeing one in the flesh! 

- Tony Hall -

Related links

• Jardin Botanico de Cactus y otras Suculentas
• Botanic Garden of Malaga 

Even though I have worked at Kew for nearly fourteen years, I am always coming across new historical facts. Recently a colleague of mine in the Arboretum asked me if I knew anything about the blackout trees on the Kew road! I didn't but was so intrigued I decided to try and find out more.

I came across a few articles on the subject, many showing old photographs and one in particular from the late Fifties showing some of the trees along the Kew road. Many still showed signs of the white bands painted on them in 1945, during the blackout, and which were still very obvious as late as 1979, as you can see in photograph below.

 Common lime (Tilia x vulgaris) painted in 1945, photographed in 1979 (Photo: Nigel Hepper)

  The same tree photographed in February 2013 

There are fewer old trees around due to the Great Storm of 1987 and losses to disease, but photographs taken in an article in 2006 clearly showed some trees with blackout paint still visible. So here we are in 2013 some 68 years after they were originally painted. 

 These two trees both show the white lines (somewhat faded) painted on during the blackout in the Second World War

White lines painted on a black walnut tree

On the black walnut tree, above, the lines probably show up the best of all the trees which were painted along the Kew road. In fact the lines are much easier to see 'in the flesh' than in photographs.

There are seventeen trees which still show some signs of the blackout painting between Lion gate and Victoria gate, though some with only the faintest markings. This just goes to show how long the outer bark on some trees can persist and that, conversely, damage done today may take the tree decades to repair!

It would be great to hear if you know of any other trees with their blackout paint still visible.

- Anthony -

Here are some of the sights for those of you who couldn't get here or may have decided staying at home was a warmer option....

Part of the Arboretum including the Temperate house, taken from the Pagoda.

The Pagoda and Kew Palace during the snow 

Lots of families braved the cold over the weekend to visit Kew as it was transformed by heavy snow. Among the dozens of snowmen being built by children and adults alike were glimpses of Spring just around the corner.

The Hamamelis bed along Victoria walk, close to the King Williams Temple, is looking spectacular at the moment, particularly with a light dusting of snow.

The fragrant bright yellow Hamamelis 'Kew Sunshine' topped with snow.

More used to the warm sunshine of the Mediterranean than freezing snow, the European palm (Chamaerops humilis) is very hardy and looks stunning in its winter coat.

The European palm, Chamaerops humilis close to the King Williams Temple. 

Lots of birds rely on us for a helping hand during Winter, particularly in cold snaps. Regular supplies are left in these feeders attracting dozens of great tits, blue tits and coal tits as well as nuthatches, friendly robins and not so friendly parakeets.

A great tit, grateful for a free meal.

Sometimes you don't always see the bird...

Finally, as I mentioned, there were lots of snowmen being built, but this was my favorite. I am reliably informed by one of our Friends of Kew that he was called Norman the snowman.

Norman the Snowman chilling out... 

- Tony -

There are so many great trees that put on a colourful autumn display here at Kew Gardens, that trying to pick my favorite six is really difficult.

I haven't for instance included any oaks, many of which produce really good autumn colour. 

I remember visiting Boston this time last year and seeing the fall colour, mainly comprising oak, ash and maples – a truly amazing sight if you get the timing right.

The first of my six is the white ash – Fraxinus americana (below) from eastern North America. So good is the autumn colour of this tree that we have grafted several others from the original tree at Kew, which I also photographed for the front cover of The pruning of trees, shrubs and conifers by Brown and Kirkham.

The young grafts have now been planted in the Arboretum as a loose group to add more interest to the display of autumn colour.

Above: White ash – Fraxinus americana

Shagbark hickory – Carya ovata

The shagbark hickory (Carya ovata), in the walnut family, has leaves that turn a wonderful bright yellow during the autumn. We have several specimens at Kew Gardems growing close to the Pagoda and Japanese Gateway. These are also from North America and produce sweet edible nuts in a good summer.

Top: Sweet gum –  Liquidambar styraciflua

Below: The leaves of Liquidambar 'Stella'

Liquidambar or sweet gum has to be favorite number three. In autumn the leaves turn through shades of red becoming purple before they fall. It also has a corky bark on the older stems, which can be seen during winter once the leaves have fallen. The colour can be variable on seed-raised plants, but as with the cultivar 'Stella' (shown above), this colour and leaf form can be guaranteed. You can see Liquidambar adjacent to the Orangery and on the Broad Walk. The Arboretum team also planted a matching pair on the Pagoda Vista and 12 young plants around the perimeter of the small Kew Green outside the old Main Gate, now restored and re-named the Elizabeth Gate to commemorate the Queen's Diamond Jubilee.

Acer opalus

This particular Acer opalus is a wonderful specimen, around 15 m tall, with a rounded habit typical of the species. It flowers in early spring on leafless stems. However, it is its autumn colour that is its crowning glory. Yellows and oranges glow in the autumn sunshine, drawing you from afar for a closer look.

Cotinus obovatus

This particular tree (above), close to the Victoria Gate and Temple of Bellona, is a British Champion Tree for its species. More often seen as a largish shrub, here it grows as a medium-size tree and at this time of year turns to shades of yellow, orange, red and purple. Apparently old specimens of Cotinus obovatus are rare in the wild, partly due to the fact that many were cut down during the American Civil War for the orange dye the wood produces.

Beech – Fagus sylvatica

                                                                                                                                                                          
My final choice is the beech. This is not only a great autumn tree at Kew, with many dating from the 1800s, but is also the dominant tree in much of the woodland in the south-east of England. They are a wonderful sight at this time of year. The beech clump in the picture above is the result of long-gone central trees layering themselves to form this small copse, which in late autumn looks like a giant bonfire. The existing trees have been grafted and re-planted in the middle to ensure the clump's colourful future.

-Tony-

 Related Links 

• Find out more about the Arboretum at Kew
• Come on a trip to the Treetop Walkway
• Come on a guided tour of Kew
• Learn photography at Kew
• Read our photography blog