Sibbaldia: the International Journal of Botanic Garden Horticulture 2021-02-23T11:54:46+00:00 Kate Hughes Open Journal Systems <p><em>Sibbaldia</em> exists to give horticulturists and managers a voice and to bring the work they do to a worldwide audience. It is for horticulturists, managers and students of botanical, heritage and conservation landscapes. The Editor particularly welcomes articles on horticultural techniques, cultivation of species and the application of horticulture for conservation practice. Articles on the curation, plant science, health and heritage of plant collections and species are also welcomed.</p> Botanic Garden Profile: The National Botanic Garden of Wales at 20 2021-02-23T11:54:46+00:00 Will Ritchie <p>The National Botanic Garden of Wales celebrated its 20th anniversary in 2020 with many achievements and challenges for staff, volunteers and stakeholders to reflect upon. An ambitious project since its inception, the Botanic Garden has grown from humble beginnings into an established national institution in its first two decades, with the tireless efforts of many helping it to flourish. Early proponents of the idea did much to foster others’ support, and what started as a vision shared between a small group of enthusiasts became a Millennium Commission funded project in 1996. Since opening to the public in 2000, much work has been done to create the gardens, infrastructure and teams necessary to pursue the Botanic Garden’s mission. In a climate of increasing biodiversity loss and environmental degradation, science, horticulture and education programmes have been developed which continue to make tangible contributions to the study, conservation and interpretation of plant diversity in Wales and beyond. With 568 acres (230 ha) to develop further still and world-class facilities such as the Great Glasshouse, the Botanic Garden aims to play an important role in research, conservation, education and public engagement for many years to come.</p> 2021-01-27T00:00:00+00:00 Copyright (c) Student Project A comparison of natural & synthetic rooting hormones for cuttings propagation using Saxagothea conspicua Lindl. 2020-12-18T09:56:36+00:00 Isabel Cayon-Fernandez <p>This paper examines the effects of using natural and synthetic rooting hormones for cuttings propagation. The study used <em>Saxegothaea conspicua </em>Lindl, a Near Threatened conifer native to Chile and Argentina. A trial was set on 80 semi-ripe cuttings of<em> S. conspicua</em>&nbsp;applying both synthetic (IBA) and natural hormones derived from willow and lentils. This study evaluates and measures the rooting success of using different types of hormones at the end of the trial (such as development of roots, length, etc). It also aims to examine the level and type of auxins found in the lentil and willow rooting solution, if present. After evaluation of results of the present trial and the wider literature, this paper discusses the potential use of this type of natural hormones in future.</p> <p>This article is an extract from the author’s HND Specialist Project written for the RBGE Diploma in Horticulture with Plantsmanship in June 2018.</p> 2020-11-04T00:00:00+00:00 Copyright (c) Reducing risk to wild ecosystems in nursery production 2020-12-24T10:48:13+00:00 Rebecca Stanley Wayne Dymond <p>The implication of the nursery trade in the historic movement of the pathogen that causes kauri dieback (Phytophthora agathidicida) instigated a review of nursery biosecurity procedures at Auckland Botanic Gardens. The nursery grows 65,000 native plants a year which are planted at restoration sites throughout Auckland. Threatened plants are also grown in the nursery and returned to the wild. The biosecurity project resulted in a manual of protocols, supported by infrastructure upgrades, to enable the nursery to take all practicable steps to ensure there is as little risk as possible to natural ecosystems through nursery practices. This work also demonstrates the important role of botanic gardens in providing education and advocacy for such schemes in all nurseries.</p> 2020-11-06T12:24:13+00:00 Copyright (c) Hydrological and planting design of an experimental raingarden at the Royal Botanic Garden Edinburgh 2020-12-18T09:56:30+00:00 David Kelly Kirsty Wilson Aravindan Kalaichelvam David Knott <p>A new experimental raingarden has been created at the Royal Botanic Garden Edinburgh (RBGE) to help cope with the impacts of more frequent and intense rainfall events. Raingardens offer a sustainable, nature-based solution to flood mitigation by mimicking natural rainwater retention and infiltration characteristics within a constructed bioretention system. By incorporating specially selected plants that can withstand both very wet and very dry conditions, raingardens also provide enhanced biodiversity capacity.</p> <div class="page" data-page-number="1" data-loaded="true"> <div class="textLayer"> <div>This paper reports on the hydrological design of the raingarden, which is aimed at reducing the occurrence of waterlogging and localised flooding within RBGE, before discussing the selection and cultivation of the planting. It is hoped that the mix of plants chosen will encourage a great diversity of wildlife, providing nectar sources for insects and bees in summer, and homes for invertebrates and food for seed-eating birds in winter. With the raingarden having been in place for over a year at the time of writing, reflections on its maintenance and</div> <div>upkeep during that time and performance assessment for significant storm events will also be discussed.</div> </div> </div> 2020-11-06T00:00:00+00:00 Copyright (c) Determining the temporal interaction of Camellia cultivar flowering periods and camellia petal blight disease presence in Auckland, New Zealand 2020-12-18T09:56:34+00:00 Emma Bodley Rebecca Stanley <p>Botanic gardens hold diverse and valuable living collections that provide a number of research, conservation and education opportunities. Auckland Botanic Gardens (ABG) has an internationally significant collection of species and cultivar camellias that have been used for scientific research into understanding which species are susceptible to camellia petal blight. ABG has surveyed all cultivars and species in its collection over multiple years to identify which camellias are affected by petal blight and which avoid it, based on their flowering period. A total of 363 camellias were assessed for petal blight over 6 years of surveying. It was found that 245 cultivars and 6 species were susceptible to the disease, while 68 cultivars and 32 species did not display any visual symptoms. These are important findings, as enthusiasts and breeders alike may use them to inform their respective interests.</p> <div class="page" data-page-number="2" data-loaded="true"> <div class="textLayer">&nbsp;</div> </div> 2020-11-06T00:00:00+00:00 Copyright (c) Trees and shrubs collection of Polar-Alpine Botanical Garden-Institute 2021-02-10T14:41:20+00:00 Oxana Goncharova Irina Lipponen Elena Poloskova Olesya Zotova <p>Polar-Alpine Botanical Garden-Institute (PABGI) is the northernmost in Russia (67<sup>о</sup>38'N.) and one of the few botanical gardens in the world inside the Arctic Circle. It has a unique collection of live plants, extensive herbarium funds. The article contains a list of the introduced woody plants in the PABSI collection fund. In 2018, the collection funds of woody plants included 27 families, 57 genera, 271&nbsp;species, 21 subspecies, 14 species, 17 forms, 22 varieties and 22&nbsp;hybrids.</p> <p>For the overwhelming majority of tree species introduced in PABGI, the presence of flowering / pollination and fruiting / seed production phases of different regularity is characteristic. The collection has 2 species included in the Russian Federation Red List. In the regional Red Lists of Russia there are 232 samples of 78 taxa of woody plants introduced in the PABGI. According to the list of rare species of IUCN, 298 samples of 106 taxa of woody plants have one particular international protection category or another.</p> <p>&nbsp;</p> 2021-02-02T09:51:11+00:00 Copyright (c) Recreation of the Edinburgh Potato Solanum × edinense Berthault 2020-12-18T10:55:19+00:00 Diego Sanchez-Ganfornina Jan Tapson Liz Sutherland Max Coleman <p>Solanum × edinense Berthault is a spontaneously occurring hybrid between S. demissum Lindl. and the cultivated potato, S. tuberosum L., found near potato fields in Mexico. Although not described until 1911, this hybrid was in cultivation at the Royal Botanic Garden Edinburgh (RBGE) shortly after the Irish Potato Famine of 1845–1849 and proved to be highly resistant to late blight, Phytophthora infestans. In the mid-19th century late blight caused widespread failure of the potato crop across Europe and played a central role in the Irish Potato Famine. Using the parent species in controlled crosses we have recreated the hybrid that was named by Berthault in recognition of RBGE as the source of his plant material. We have also researched the early history of this hybrid potato in Edinburgh and demonstrated disease resistance through field exposure during the outbreak of late blight in Edinburgh in 2019. This work underlines the important role of this hybrid in the breeding of disease-resistant potato cultivars.</p> 2020-11-06T00:00:00+00:00 Copyright (c) Maurice Mason – farmer, plant hunter and friend to the National Botanic Gardens, Glasnevin, Dublin, Ireland 2021-02-10T14:31:39+00:00 Dennis G. McNally <p>Maurice Mason is well documented as an accomplished amateur horticulturist and plant collector. His contributions to horticulture were recognised by his guest attendance at the Kew Guild Annual Dinner in 1960 and the award of the Royal Horticultural Society’s Victoria Medal of Honour in the same year. He was generous in sharing his plant collections, and this generosity extended to Ireland. His less well-known contribution to Irish horticulture through the National Botanic Gardens, Glasnevin is outlined here.</p> 2021-01-19T12:22:32+00:00 Copyright (c) The Cultivation of Typhonodorum lindleyanum Schott at Rotterdam Zoological & Botanical Gardens 2021-02-09T21:17:50+00:00 Louwerens Jan Nederlof Christopher Lee Degenaar <p><em>Typhonodorum lindleyanum</em> Schott has been cultivated in the tropical greenhouses of Rotterdam Zoo since 2018. In this article the cultivation of this species is outlined with reference to its natural environment, including propagation from seeds, planting out in a tropical water pond, the general maintenance, flowering and proposals for further study on pollination and flower anatomy.</p> 2021-02-09T17:05:51+00:00 Copyright (c)