For the Royal Horticultural Society’s Flower Show in Cardiff this year, we decided to build on previous experience of creating real botanical windows. We wanted something that would form an eye-catching backdrop to the collections on display within Amgueddfa Cymru's woodland-themed marquee.

The botanical windows began in 2015 with our Museum in a House exhibit for the Made in Roath festival. We wanted a display that would reflect aspects of our Museum work as well as to represent the herbarium itself. We pressed plants following the standard method for creating herbarium specimens as shown below. In this way, plant specimens last for hundreds of years on conservation grade card and out of light in herbarium cupboards.

Method for pressing plants for long-term storage in the botany collections:

1. Select a plant showing as many characters as possible – fruit, flowers, roots.
2. Place between blotting paper, arranging the plant at the same time, to limit the amount of overlapping material.
3. Place in a plant press and tie as tightly as possible.
4. Place in a drier between 20 and 30^oC.
5. Change the blotting paper initially every day, and then less often until the plants are completely dry. This will take about a week.
6. Attach plant to conservation-grade card (for example made from cotton) using small strips of adhesive cotton tape. Place the tape strips strategically on the plant’s stems and leaves to hold it safely on the card. This technique allows for some flexing of the card without damage to the plant and for easy removal of the plant from the card for study.
7. Store out of light in an environment with humidity between 40 and 60 RH.

After pressing, we attached the plants to large sheets of tracing paper using small pieces of transparent tape strips (rather than the conservation grade materials we would normally use for the botany collections). The tracing paper was then wrapped carefully for transport to the site of the exhibit and then taped to sunny windows in the living room.

For the RHS Flower Show in 2016, we built on the initial idea but had the added complication of having to create our own windows to install in the marquee. We had nine 80 x 60 cm sheets of 2mm thick acrylic cut, with holes drilled into each of the corners for hanging. We attached the plants to these sheets using small transparent tape strips. Once at the Flower Show, we attached strong metal rings to the corner of each panel and hung the panels from the cross bars of the marquee by looping fishing line (the type strong enough to catch a 60lb fish!) through the metal rings. The only worry now was whether the ranges of temperature and humidity in the marquee would be too much for the transparent tape and we would arrive the next day to find the plants on the floor! We certainly would never subject pressed specimens from the collection to this environment. We were relieved to find that the panels held well the whole weekend – and with much praise from visitors.

In 2017, we planned to recreate the botanical windows for the Flower Show, but with a slight twist. We had a woodland theme, so we chose Welsh trees for each panel: Oak, Beech, Hazel, Hawthorn, Holly, Scots Pine, Yew and Lime. To make the display really stand out, we printed a silhouette of the tree with its Welsh, English and scientific name onto transparent material for the backdrop. We taped the transparencies onto the acrylic and then taped the pressed plants onto the transparencies as before. Unfortunately, this year was particularly warm weather – the transparent tape holding the pressed plants did not last as long on some of the panels, so remedial work had to be carried out to keep the display looking good.

Read about the RHS Flower Show in 2017:

• More than Meets the Eye
• RHS Flower Show 2017
• Museum Twitterfall

Find out more on our Made in Roath ‘Museum in a House’ installation in 2015 and the RHS Flower Show in 2016

Over the last few months you may have seen the Saving Treasures; Telling Stories team on social media using the hashtag ‘Finds Friday’, where we’ve been showcasing some of our wonderful treasure and non-treasure items recorded by the Portable Antiquities Scheme Cymru.

This month we’d like to focus on two special finds from Wales: The Abergavenny Coin Hoard and a prehistoric feasting site in Llanmaes.

Why these two finds?

Both have been nominated in a nationwide competition, held by the British Museum and The Daily Telegraph, to search for the nation’s favourite treasure item from the ‘Top 20’ list.

2017 marks the 20^th anniversary since the passing of the 1996 Treasure Act and items on the ‘Top 20’ list highlight some of the most important treasure discoveries since the Treasure Act.

We might be a tad biased towards which ones we’ll be voting for, but we want to share the history behind these finds as they really do have a story to tell, or in the case of Llanmaes, an enigmatic mystery as to what was actually happening at the site. You can read about the 20 items by clicking this link, and don't forget to vote!

Llanmaes

Our first nomination on the ‘Top 20’ treasure list is a site, rather than a single group of objects. The discovery is a prehistoric feasting place and settlement, uncovered in Llanmaes, in the Vale of Glamorgan.

This important site was discovered following the reporting of a potential treasure find by two metal detectorists in 2003, and excavation continued for the next seven years by archaeologists from the National Museum of Wales, assisted by students from Cardiff University and local volunteers.

The story behind Llanmaes

The earliest remains on the site, dating to about 2150-1950 BC, are the cremated remains of an adult male, which were buried in an urn. It seems that this burial provided the focus for later settlement, which yielded treasure objects such as a gold bead. One mystery object in the shape of a great white shark’s tooth has left archaeologists puzzled. We’re not too sure where it came from or why it was left there!

By the beginning of the Iron Age (about 675 BC) this settlement had been abandoned, but the site continued to be the focus of human activity in the form of feasting, which left behind an extensive midden deposit. This is the first known example from Wales, of a class of middens representing remarkable accumulations of cultural material gathered by communities at the beginning of the Iron Age. This has revealed an extraordinary prehistoric feasting mound, containing thousands of pig bones, further feasting vessels, bronze cauldrons, pottery and axes.

Unexpectedly, nearly three-quarters of the animal bones were from pigs – a far higher proportion than is usual for such deposits, and, even more remarkable is the discovery that the majority of the pigs’ bones were from the right fore-quarter of the animal. Similarly, some of the axe-heads are of a type associated with parts of northern France, so it seems as though people were converging on Llanmaes during the Early Iron Age from a wide area to engage in cultural activities which had clear rules and accepted practices.

Feasting seems to have come to an end at the site during the Roman period, when changing cultural practices made the earlier rituals less appropriate, but evidence of continued Roman occupation suggests that it still held meaning for local people into the 4^th century AD.

The community at Llanmaes were closely involved with the excavations over the years, and the National Museum’s Archaeology department brought in a number of school groups to work with artists on creative responses, such as performances, inspired by the site.

Abergavenny hoard

In April 2002 three metal-detectorists had the find of their lives in a field near Abergavenny, Monmouthshire where they found a scattered hoard of 199 silver pennies.

The Abergavenny hoard is the earliest Norman hoard from Wales and provides a vivid picture of monetary circulation in the Welsh March in the 1080s CE. It includes 130 coins of the Anglo-Saxon king Edward the Confessor (1042-66) and 69 coins of the Norman king William the Conqueror (1066-87).

Where did they come from?

Norman incursions into Gwent (present-day Monmouthshire) had followed hard on the heels of the conquest of England by Duke William in 1066 and they brought with them the habit of using coins.

The 199 silver pennies provide a rich mixture of issues of Edward the Confessor (1042-66) and William the Conqueror (1066-87); there are coins of 104 moneyers from 36 mints, with Hereford prominent.

The coins had been lost or hidden in a cloth bag, after about 1080 CE and for most people living in that time they would have represented several months’ pay. However, the lack of positive archaeological context makes it impossible to judge whether the coins had been concealed deliberately or were simply lost. We shall probably never know quite why these coins ended up in the corner of a field in Monmouthshire but, as well as expanding our knowledge of the coinage itself, they will cast new light on monetary conditions in the area after the Norman Conquest.

And there we have it, our two treasure finds on the ‘Top 20’ treasures list.

The online voting continues until May 15^th, and you can vote for LLanmaes or the Abergavenny Hoard by following this link:

http://www.telegraph.co.uk/wellbeing/mood-and-mind/treasure-20-vote-favourite/.