At the time the Society was founded in 1809, Edinburgh was in the throes of building of the New Town, though only two of the gardens, St Andrew Square and Charlotte Square, were then laid out. Gardening must have been a subject of fairly wide interest because in December of that year a group of Edinburgh worthies met at the Royal College of Physicians, then in George Street, and from this meeting a Society for the ‘encouragement and improvement of the best fruit, the most choice flowers and most useful culinary vegetables’ was set up. This was the Caledonian Horticultural Society, becoming The Royal Caledonian Horticultural Society in 1824.

The inspiration for the Society came from the London Horticultural Society, founded in London five years earlier and there were many links between the two societies. Sir Joseph Banks and Richard Salisbury, founders of the London Society, and Thomas Andrew Knight who was President of the London Society from 1811 until 1838, were both members from the outset.  These men all knew that growing in Scotland was different and felt that there was considerable benefit in having a separate society focused on growing in Scotland.

From the beginning the Society flourished, bringing together ‘skilful professional gardeners and zealous amateurs’, and the support of nurserymen and professional gardeners was very important. The initial subscription was one guinea a year for ordinary members, but noblemen or gentlemen were invited to join free as honorary members. By 1829 a membership of 1,000 or so had been built up in different categories. Many of the well-known figures of the City joined, among them the artist Henry Raeburn, judge Henry Cockburn and architect William Playfair, and there were strong links between the Society and the creation of the gardens of the Edinburgh New Town. The activities of the Society in its early days had much in common with the present day. Both the theoretical and the practical sides of gardening were covered; meetings were held, papers were read, medals and certificates were awarded and shows were an important feature. The meetings were held in the Royal College of Physicians and one of the first prizes offered by the Society was a silver medal for the best radishes grown in the open ground, awarded to James Thomson, gardener from Duddingston on the edge of Edinburgh, who sent 500 radishes to market on 12th April 1810.

The Society was ambitious and the creation of a garden was first suggested in 1810, as a high priority. It was partly to fulfil the role of giving advice on the best varieties and methods of cultivation, and partly to test, in local conditions, the many new plants arriving as a result of the travels of the plant hunters. As a result the Society put a lot of its energy into developing a garden.

The original proposal was for a site near Holyrood Palace, but a much better solution was found when in 1823 the Society took on the lease of 10 acres of land in Inverleith, adjacent to the new site of the Botanic Garden, which was moving from the cramped quarters of its Leith Walk site. William McNab, Curator of the Botanic Garden and a prominent member of the society drew up a plan for the new garden that included something for everyone:

• orchards,
• a lockable experimental garden,
• a culinarium where ‘new and or little known varieties of culinary vegetables will be fairly tried’,
• an area for growing stocks for grafting and budding, nurseries,
• a wall for the finer kind of fruit trees,
• a rosary and
• compartments for perennials and annuals.

The plan was executed and the garden became known as the Experimental Garden. Donations of plants were received from all over the world, including 50 different types of strawberry sent by the London Horticultural Society.

A cottage was built for the head gardener. Shows usually involved a military band with dancing, and for a time became fashionable events, with beautifully dressed ladies arriving in carriages.

In 1836 sadly the  head gardener left under a cloud but the job was taken by James McNab, the son of the Curator of the Botanic Garden.  James McNab was not only a very able garden manager but he was also skilled at raising funds, and the society flourished.  He built an small Exhibition Hall in which the Society could hold shows as well as meetings which was completed in 1843.

McNab’s most ambitious project was the creation of a Winter Garden, a vast three gabled glasshouse with room for a promenade inside, which was opened in 1850. By this time though financial problems were looming.

The cost of running such an elaborate garden, plus the annual rent of £140, proved a heavy burden for the Society. In the late 1840s the membership went into a period of decline. In 1848 William McNab, who had done so much for the Society, died and his son James succeeded him as Principal Gardener at the Royal Botanic Garden. At a stroke the Society lost one of its main supporters and its key employee. The writing was on the wall for the Society’s Inverleith venture and after a lengthy period of negotiation the Experimental Garden was incorporated into the Royal Botanic Garden in 1864. It had lasted only 41 years. Sadly the great Winter Garden was demolished to make way for a new rock garden but a better fate met the Society’s Exhibition Hall. It became the Garden’s herbarium and remained in that use for 100 years until 1964; shortly after that it was then renamed The Caledonian Hall, thus provided a lasting memory of its early history as home to the Society’s events.

In 1865 the society amalgamated with the Edinburgh Horticultural Society, which had many more members but a much shorter history. The Society survived.

The cross germination of horticultural knowledge between professional and amateur continued as one of the important functions of the Society.

The centenary of the Society (1909) merited a review of the Society’s history in the Gardeners’ Chronicle sadly the First World War saw an end to shows as all efforts were directed to growing food crops.

Shortly after the War, the Society joined forces with the Scottish Horticultural Association.  There was considerable overlap between the societies but both had suffered from the War.  Given the long standing Royal Patronage awarded to The Royal Caledonian Horticultural the Society survived.

By 1925 all energies were devoted to an International Exhibition, a huge horticultural display, described  as the ‘greatest and grandest triumph of all.’ The show was held in the Industrial Hall, in New Street, Edinburgh, which later became the Central Bus Garage (now demolished). It was opened in a downpour by the Duchess of York, who was then the patron, but the visitors were not deterred, and over the three days of the show £1,700 was taken at the gate.

The Society’s recent history, like its past, has been a matter of ups and downs.  But it remains true to its founding principles.

(Footnote: Duchess of York was to become Queen and subsequently Queen Elizabeth the Queen Mother)

Royal Patronage has been an important factor in the esteem in which the Society has been held. In 1820 the Earl of Hopetoun, who was President at the time, obtained the Patronage of George IV, and in 1824 the Society received its first Royal Charter. Since then there have been two more Royal Charters, the latest in 2008. The Princess Royal is now the Patron having succeeded her grandmother, the Queen Mother, who was patron for 50 years.