Mark Laird
Senior Lecturer
Department of Landscape Architecture

 

 

Curriculum Vitae

Education
1984 Master of Arts in Conservation Studies
Institute of Advanced Architectural Studies, University of York
Commended for dissertation: 'An Approach to the Conservation of Ornamental Planting in English Gardens 1730-1830'
1979 Master of Philosophy in Landscape Architecture
University of Edinburgh, Frank Clark Prize. 
1977 Two Years' Study in Landscape Architecture
Thames Polytechnic, London 
1974 Bachelor of Arts (Hons) in Modern History
(specialized in architectural history)
St. John's College, Oxford 

Present Position & Recent Activities
2003- Associate Director, Painshill Park Trust
2001-  Senior Lecturer in Landscape History, Harvard University Graduate School of Design
1997-2000 Adjunct Professor, University of Toronto
1996 Guest professor in landscape history at GSD, Harvard University, fall semester
1994-1995 Full Fellow in Studies in Landscape Architecture, Dumbarton Oaks, Washington, D.C.
1994-  Historic Landscape Consultant

International heritage consultant. Recent projects include: Vimy Memorial Park, Arras, France; 24 Sussex Drive, Ottawa (Prime Minister's Residence); Grange Park, Toronto and Parkwood, Oshawa, Ontario; Schlosshof and Belvedere, Vienna, Austria; Fürst Pückler-Muskau Park, Germany; Croome Court, Hestercombe and Gibside, England. Historic planting consultant to Painshill Park Trust from 1984 to present.

Co-Curator of an exhibition on Mrs. Delany for Yale Center for British Art (from 2006)
Author of The Flowering of Landscape Garden: English Pleasure Grounds 1720-1800 -- published by the University of Pennsylvania Press, January 1999
Reviews Editor for Studies in the History of Gardens and Designed Landscapes, formerly Journal of Garden History (1989-2003).

Previous Activities
1988-1994 Historic Landscape Consultant
From 1993 to 1994: commissioned to write a set of guidelines for English Heritage on issues of planting conservation. The second phase of this contract included studies of historic planting at Chiswick House, the Brighton Pavilion and St. James's Park, London.
1993: work on a report on historic planting at Ham House for the National Trust; collaboration in a study on cemetery conservation in Ontario.
From 1988 to 1993: conservation studies of Rideau Hall, Ottawa; Bruck an der Leitha, near Vienna, and Schloß Eggenberg, Graz; 100 Boulevard Gamelin, Ottawa; Cadland, Hampshire; Hatfield Priory Essex, and Castle Bromwich Hall.
Autumn 1990: garden history instructor to the University of Guelph landscape programme 'semester abroad' in the UK.
1988-1989 Full Fellow and Summer Fellow in Studies in Landscape Architecture, Dumbarton Oaks, Washington, DC.
Research on English flower gardens, 1700-1830, to prepare for publications in Garden History, Journal of Garden History and DO Colloquium volume XIII.
1986-1988  Historical Research Fellow, Chelsea Physic Garden, London
Responsible for conducting research into the history of the garden and its plants to produce a series of publications on W. Curtis, J. Banks and T. Moore.
1984-1986 Research Fellow, Centre for the Conservation of Historic Parks and Gardens, IoAAS, University of York
Responsible for research, lecturing and administration. Worked on compiling HBMC (English Heritage) register of historic sites in England. Historic planting consultant to Painshill, Chiswick House, Endsleigh House.
1981-1983  Landscape Architect for Private Practice, Klaus Ihlenfeld, Heidelberg, West Germany
Responsible for design work for private gardens and public landscapes including planting plans and perspectives.
1979-1981 Free-lance Landscape Consultant, Donald Insall & Associates, Conservation Architects
Work included a conservation study of Witley Court, Herfordshire. Consultant to Sir Gordon Russell in the completion of his celebrated garden Kingcombe, Gloucestershire.
1976-1977 Landscape Trainee, Derek Lovejoy & Partners, Crawley, Sussex
1974-1975 Assistant Gardener, St. James's Park, London, and Killesberg Park, Stuttgart

Awards, Fellowships & Professional Honors
  Jury Member of Point Pleasant Park International Design Competition, Halifax, Nova Scotia, 2005
  CSLA awards for Conservation Study of Parkwood, Oshawa, 1999
Europa Nostra medal for 'exemplary' restoration of Painshill Park, 1998
Full Fellowship at Dumbarton Oaks 1994-1995
Stanley Smith Horticultural Trust Scholarship 1995
Full Fellowship at Dumbarton Oaks 1988-1989
Summer Fellowship at Dumbarton Oaks 1989
Stanley Smith Horticultural Trust Scholarship 1985
European Community Scholarship for Conservation Studies 1983-1984
Frank Clark Prize for dissertation on garden conservation, Edinburgh, 1979
Social Science Research Council Scholarship 1977-1979
Exhibition Scholarship to St. John's College, Oxford, 1971-1974

Publications
Books
1999 The Flowering of the Landscape Garden: English Pleasure Grounds, 1720-1800, University of Pennsylvania Press
1992 The Formal Garden: Traditions of Art and Nature, Thames and Hudson. Translated into French, German, Dutch and Italian

Essays and Articles
Pending

Commissioned to write a chapter on 'Planting in Gardens in the Age of Empire: 1800-1920', ed. Sonja Dümpelmann (vol. in A Cultural History of Gardens, eds. John Dixon Hunt & Michael Leslie), due out in 2009.

'This Other Eden: The American Connection in Georgian Pleasure Grounds, from Shrubbery and Menagerie to Aviary and Flower Garden,' in The Culture of Nature: Art & Science in Philadelphia 1740-1840, ed. Amy R. W. Meyers (London and New Haven: Yale University Press, 2009)
Published
2008 'The Congenial Climate of Coffee-House Horticulture: The Historia plantarum rariorum and the Catalogus plantarum', in The Art of Natural History: Illustrated Treatises and Botanical Paintings, 1400-1850, eds. Therese O'Malley and Amy R. W. Meyers (Washington, D.C., National Gallery of Art, 2008), pp. 226-259 (including appendix by Margaret Riley).
2007 'Greenhouses & Great Storm: John Evelyn on the Workings of God and Man in the Garden', in A Celebration of John Evelyn, Proceedings of a Conference to Mark the Tercentenary of his Death, ed. Mavis Batey (Surrey: Surrey Gardens Trust, 2007), pp. 98-119.
2006 '"Perpetual Spring" or Tempestuous Fall: The Greenhouse and the Great Storm of 1703 in the life of John Evelyn and his Contemporaries', Garden History, vol.34, no.2 (Winter 2006), pp. 153-173.
2005 'The Impacts of Climate Change on Historic Landscapes', in The Significance of Setting: Conserving Monuments and Sites in Changing Canadian Cultural Landscapes (Toronto: ICOMOS Canada—CD available at canada.icomos.org.)
2003 'Sayes Court Revisited', in John Evelyn and his Milieu, eds. Frances Harris and Michael Hunter, London: British Library, pp. 115-144.
'Reconstructing the Culture of Horticulture on Both Sides of the Atlantic', in The Garden: Myth, Meaning and Metaphor, eds. Brian J. Day, Windsor: Humanities Research Group, University of Windsor, pp. 71-86.
2002 'Landscape Conservation at Chiefswood National Historic Site' in Borderlands: The Shared Canadian and U.S. Experience of Landscape, proceedings of The Alliance for Historic Landscape Preservation, Waterloo, Ontario, Heritage Resource Center, University of Waterloo, pp. 136-146.
'The Culture of Horticulture: Class, Consumption, and Gender in the English Landscape Garden', in Bourgeois and Aristocratic Cultural Encounters in Garden Art, 1550-1850, ed. Michel Conan, Washington, DC: Dumbarton Oaks Research Library and Collection, pp. 221-254.
2001 Entries on 'Shrubbery', 'Nuneham Courtenay', 'Parterre/Plate Bande' and 'American Garden' for the Chicago Botanic Garden Encyclopedia of Gardens: History and Design, Chicago & London: Fitzroy Dearborn Publishers.
2000 'Enlarging the Frame': Der Schutz von historischen Gärten ausangloamerikanischer Sicht' in Historische Gärten - Schutz und Pflege als Rechtsfrage, ed. Gerte Reichelt, Vienna: Band 5 der Schriftenreihe des Ludwig Boltzmann Institutes für Europarecht, pp. 49-58.
'From Bouquets to Baskets', The Magazine Antiques (June), pp.932-39
'Exotics and Botanical Illustration' in Sir John Vanbrugh and Landscape Architecture in Baroque England 1690-1730, eds. Christopher Ridgway and Robert Williams, Stroud: Sutton Publishing Ltd., pp.93-113.
1999 'Climate, Weather and Planting Design in English Formal Gardens of the Early 185h Century' in Die Gartenkunst des Barock, ICOMOS Journals of the German National Committee, XXVIII, pp.14-19.
1998 'From Callicarpa to Catalpa: The Impact of Mark Catesby's Plant Introductions on English Gardens of the 18th Century', in Empire's Nature: Mark Catesby's New World Visions, eds. Amy R. W. Meyers and Margaret Beck Pritchard, Chapel Hill and London: University of North Carolina Press, pp.184-227.
'Parterre, Grove, and Flower Garden: European Horticulture and Planting in John Evelyn's Time' in John Evelyn's "Elysium Britannicum" and European Gardening, eds. Therese O'Malley and Joachim Wolschke-Bulmahn, Washington, D.C.: Dumbarton Oaks, pp.171-219.
'Developments in Ornamental Planting Design, 1500-1800, and their Interpretation in Garden Conservation', in Naturschutz and Denkmalpflege, ed. Ingo Kowarik, Erika Schmidt and Brigitt Sigel, vdf Hochschulverlag AG, Zürich, pp.183-191.
1997 'The Garden Plan for 13 Upper Gower Street, London: A Conjectural Review of the Planting, Upkeep and Long-Term Maintenance of a Late Eighteenth-Century Town Garden'. Garden History (Winter), pp.189-211.
  'Rekonstruktion, Denkmalpflege and Naturschutz in Painshill Park: Versöhnung zwischen Kunst und Natur', Die Gartenkunst, 9. Jahrgang Heft 2, pp.274-283.
  'Theatres of Flowers: the Art and science of Eighteenth-Century Floral Displays', in the Clusius Lectures (October), eds. Gerta van Uffelen & Erik de Jong, Clusius Foundation, Leiden, pp.5-19.
  '"Original Fabric" or "Original Design Intent"? The Unresolved Dilemma in Planting Conservation', Restoration of Baroque Gardens, The UNESCO Conferences on Neercanne, Dutch Yearbook of the History of Garden and Landscape Architecture, Architectura & Natura, pp.60-77.
1996 'James Maddock's "Blooming Stage" and the Meticulous Art of the "Auricula Theatre" as a Microcosm of Eighteenth-Century Planting', Garden History special issue, vol.24, no.1 (Summer), pp.70-81.
  'Corbeille, Parterre and Treillage: the case of Humphry Repton's penchant for the French style of planting', Journal of Garden History, vol.16/3, pp.153-169.
1994 '"Conjectural Replanting": Leitlinien zur Wiederbeplanzung historischer Gärten aufgrund von Analogieschlüssen', Die Gartenkunst, 6. Jahrgang Heft 2, pp.320-343.
  'Ein Gartenplan für Upper Gower St. 13, London; Mutmassungen über Anlage, Pflege und Entwicklung eines Bügergartens im ausgehenden 18. Jahrhundert', in Garten Kunst Geschichte: Festschrift für Dieter Hennebo, ed. Erika Schmidt, Wilfried Hansmann and Jörg Gamer, pp.82-94 (with appendix by John Harvey).
1993 'A Cloth of Tissue of Divers Colours: The English Flower Border, 1660-1735', Garden History, vol.21, no.2 (Winter), pp. 158-205 (with appendix by John Harvey).
1992 'Restoration of Planting in Eighteenth-Century Landscape Gardens', Restoration '92, UKIC, (October). 
  'Ornamental Planting and Horticulture in English Pleasure Grounds, 1700-1830' in Garden History: Issues, Approaches, Methods, ed. John Dixon Hunt. Dumbarton Oaks Colloquium series, vol. XIII, pp.243-277.
1991 'Assessment of the Management Plan for the Landscape Garden Prugg: Bruck an der Leitha', Die Gartenkunst, 3. Jahrgang Heft 2, pp.201-205.
  'Approaches to planting in the late eighteenth century: some imperfect ideas on the origins of the American garden', Journal of Garden History, vol.11, no.3, (July-September), pp.154-172.
1990 '"Our equally favorite Hobby Horse": the flower gardens of Lady Elizabeth Lee at Hartwell and the 2nd Earl Harcourt at Nuneham Courtenay'; appendix by J.H. Harvey. Published in Garden History, vol.18, no.2, (Autumn), pp. 103-154.
1988 Paper delivered to the British Records Association in 1987: 'The Interpretation of Archival Sources in Garden Restoration', Archives, vol. XVIII, no.80 (October). 
  Papers on aspects of the history of Chelsea Physic Garden: 
    Thomas Moore: Curator at Chelsea Physic Garden 1848-1887, London 1988.
    Sir Joseph Banks, Botanist, Horticulturist and Plant Collector: Associations with Chelsea Physic Garden, London 1988.
    William Hudson: Demonstrator of Plants at Chelsea Physic Garden 1765-1771, London 1988.
    William Curtis: Demonstrator of Plants at Chelsea Physic Garden 1772-1777, London 1987.
1986 Peter Goodchild and Mark Laird 'Centre for the Conservation of Historic Parks and Gardens', A future for our past, no.29 (1986). 

Reviews for Journal of Garden History now Studies in the History of Gardens & Design Landscapes
  German garden books:
2006 Bibliographie der Deutschen Gartenbücher, 1471-1750, by Clemens Alexander Wimmer and Iris Lauterbach.
  Bäume und Sträucher in historischen Gärten: Gehölzverwendung in Geschichte und Denkmalpflege, by Clemens Alexander Wimmer.
  Frühe Landschaftsgärten in Russland und Deutschland : Johann Busch als Mentor eines neuen Stils, by Marcus Köhler.
  Beskrifning öfwer idéen och general-plan tell en Ängelsk lustpark, by F. M. Piper
2003 The London Town Garden, 1700-1840, by Todd Longstaffe-Gowan
2002 Von Muskau bis Konstantinopel: Eduard Petzold ein europäischer, Gartenkünstler, 1815-1891, by Michael Rohde, vol. 22, no. 2, (April-June 2002)
  Review Essay: An Oak Spring Flora: Flower Illustration from the Fifteenth Century to the Present Time by Lucia Tongiorgi Tomasi
  Hortus Eystettensis: The Bishop's Garden and Besler's Magnificent Book by Nicolas Barker
  The Art of Botanical Illustration, 2nd ed.. by Wifrid Blunt and William T. Stearn 
  The King's Privy Garden at Hampton Court Palace 1689-1995, ed. Simon Thurley
2000 Dictionary of British & Irish Botanists and Horticulturists: Including Plant Collectors, Flower Painters and Garden Designers, revised ed. by Ray Desmond and Christine Ellwood. vol.20, no.3 (July-September 2000). 
1994 Historiche Gärten in Österreich: vergessene Gesamtkunstwerke ed. Géza Hajós. vol.14, no.3 (July-September 1994). 
Plants in Garden History by Penelope Hobhouse. vol.14, no.2 (April-June 1994). 
Der Französische Garten am Ende des Ancien Régime by Iris Lauterbach 
1992 Peter Joseph Lenné: Garten/Parke/Landschaften by Harri Günther; and Die Entdeckung der Landschaft: Englische Gärten des 18. Jahrhunderts by Valentin Hammerschmidt and Joachim Wilke. vol.12, no.4 (October-December 1992).
An Oak Spring Sylva and An Oak Spring Pomona by Sandra Raphael. vol.12
1990 Das Palmenhaus auf der Pfaueninsel: Geschichte seiner baulichen und gärtnerischen Gestaltung by Michael Seiler; and Romantische Gärten der Aufklärung in und um Wein by Géza Hajós. vol.10, no.2 (April-June 1990).
1986 Gartendenmalpflege edited by Dieter Hennebo. vol.6, no.4 (Oct.-Dec. 1986).
1983 Die Ruine im Landschaftsgarten by Günter Hartmann. vol.3, no.4 (Oct.-Dec. 1983).

Reviews for Garden History
2002 "Forget not mee & my garden --”: selected letters, 1725-1768 of Peter Collinson , F.R.S. by Alan W. Armstrong, vol.30, no.1 (Spring 2002)

Conferences and Lectures
  Recent and Forthcoming Engagements as Speaker
2007 'Made to Walk On: The English Lawn as Fashion', Lecture Series 'Enlightenment', Bata Shoe Museum, Toronto, 15 April, 2007.
2006 '"Nursing Pretty Monsters": The Duchess of Beaufort and Art & Science in Baroque Gardening', Department of Landscape Architecture Lecture, Piper Auditorium, Harvard Graduate School of Design, 24 October 2006.
  'Flowers and the Georgian Pleasure Ground', Keynote Lecture at Hartwell and Nuneham Conference, UK, 19 June 2006
  'Bedding Out in Paris and London: William Robinson as Catalyst of Horticultural Change', Lecture at isabella Stewart Gardner Museum, March 2006.
  'Library and Laboratory: Testing Paper Reconstruction as a Living Garden', American Historical Association, Philadelphia, 5 January, 2006.
2005 'The Impact of Climate Change on Historic Landscapes', ICOMOS Canada Conference, Toronto, September 2005
  'Nursing Pretty Monsters: The 1st Duchess of Beaufort and the Vychious Florilegium (1703-05)', Lecture to Conference of the Garden History Society, Lincoln, 16 July
  Two lectures at Royal Botanic Gardens, Kew and Painshill Park respectively for 'Ways of Making and Knowing: The Material Culture of Empirical Knowledge' Conference (Wellcome Trust), London, 11-15 July 2005.
  Lecture Day at the Architectural Association, London, 7 July
  'Painshill: The Flowering of the Landscape Garden', Lecture in the New York Botanical Garden, Bard Graduate Center Series, Rockefeller Center, NYC, 8 March
2004 Lecture to Symposium '"Curious in Our Way": The Culture of Nature in Philadelphia, 1740-1840'; Philadelphia, 18-21 November 2004.
  "Capability Brown and Co. - The English Planting Style and European Gardening', Anglomania series at World Monuments Fund in Britain, London, 9 June 2004.
  Overview for symposium 'Garden Archaeology: History and Science in the Landscape', The Landscape Institute of the Arnold Arboretum, 5 March, 2004.
2003 'Replanting Painshill Park and the Next Twenty Years', Bard Graduate Center, 29 October, 2003.
2002 'American Plants in the English Landscape Garden'. Lecture at 'North American Plants - Their Cultural History' -- Historic Plants Symposium, Charlottesville, Virginia, 16-17 August 2002.
  'Jacobus van Huysum's Paintings for the Catalogus Plantarum (1730) and Its Relationship to John Martyn's Historia plantarum rariorum (1728-1737). Paper delivered to 'The Art and History of Botanical Painting and Natural History Treatises' symposium, National Gallery of Art, Center for Advanced Study in the Visual Arts, Washington, DC, 3-4 May 2002.
  Paper to 'Plants and the Historic Landscape', Institute for Cultural Landscape Studies of the Arnold Arbotretum/Radcliffe Seminars, 8 March 2002.
  Paper to 'The Fair Majestic Paradise at Stowe: The Restoration of an Eighteenth-Century Garden', The Huntington, 25-26 January 2002.
2001 Faculty Colloquium and Lecture for Humanities Research Group, University of Windsor, as part of the 2001-2002 Distinguished Speakers Series The Garden: Myth, Meaning and Metaphor. 9 November 2001.
  John Evelyn Conference at the British Library, London, 17-18 September 2001. Lectures at Annual General Meeting of Historic Gardens Trusts (9 September 2001); Chelsea Physic Garden (11 September 2001); and at Royal Botanic Gardens, Edinburgh (20 September 2001).
  Paper to Barockblumen-Seminar, Schönbrunn, Vienna, 7 September 2001
  Lecture in series 'Envisioning a Garden' dedicated to the recovery of the Longfellow Historic Landscape, Radcliffe Seminars, Cambridge, MA. 20 March 2001.
  Lectures in Bordeaux, Paris and Lyon for the Agrégation syllabus 'Gardens and Landscape in 18th-Century England', 19-23 January 2001
2000 Das Gartendenkmal als Schauplatz des Wandels: Kurzlebige Schmuckpflanzungen einst und heute. Conference at the Fürst-Pückler-Park Bad Muskau, 13-15 July 2000.
  National Trust Conference on Eighteenth-Century Planting, Claremont and Painshill, 12 July 2000
  A Seminar by Mark Laird on Historical Planting Design, The Architectural Association School of Architecture, 29 June 2000
  First Robert Penson Garden Lecture, St. John's College, Oxford, 27 June 2000
  'Historische Gärten Schutz und Pflege als Rechtsfrage': Conference in Vienna 28 April 2000
  54th Colonial Williamsburg Garden Symposium: 2-5 April 2000
  Lecture at Christies, New York, 24-25 January 2000
1999 Lecture at Dumbarton Oaks, December 1999
  Vanbrugh Conference, York, July 1999
  Alliance Conference 'Borderlands', Niagara-on-the-Lake, 2-4 June 1999
  Bartram 300 Symposium, Philadelphia, May 20-21, 1999
1998 Tour of English Gardens with Australian Garden History Society, June 1998
  Papers Presented and Seminars Given
1998 'From Callicarpa to Catalpa: The Impact of Mark Catesby's Plant Introductions on English Gardens of the Eighteenth Century' for the 'Mark Catesby' symposium, Williamsburg, 7 & 8 February 1998.
1997 'Theatres of Flowers: the art and science of eighteenth-century floral display', The Clusius Foundation, Leiden, 9 October 1997.
  'Climate, Weather and Planting Design in English Formal Gardens of the Early Eighteenth Century' for the ICOMOS international conference 'Die Gartenkunst des Barock', Bamberg, September 24 to 27, 1997.
  Workshop on Landscape Conservation in Ontario, Stonyground Institute for Garden and Landscape Studies, Walkerton, Ontario, June 28 1997
  'Painshill Park and the Flowering of the Landscape Garden', lecture at the annual dinner of the Radcliffe Student Chapter of the Boston Society of Landscape Architects, 30 April 1997.
  'Elysium in England: 18th-Century Landscape Gardens' for the Royal Oak Foundation at Rose-Tree Cottage, Pasadena, California, 16 April 1997.
  'Irregular Regularities: Formal Plantings in the English Landscape Garden', in the 'Formalism' Conference, Scripps College & Huntington, 10-12 April 1997.
1996 'North American Thickets in English Shires: The Impact of John Bartram's Plants on English Gardens': Smith College, 21 November 1996.
  'Painshill Park': Royal Oak Foundation, NYC, 20 November 1996.
  Workshop on 'The Genius of the Place', Stonyground Institute for Garden and Landscape Studies, Walkerton, Ontario, July 7 1996.
  'Garden Conservation and Nature Conservation', Project La Foce Conference II, section 'Cultural Degradation', Tuscany, Italy, 13-15 June 1996.
  Seminars at Architectural Association, London, and Institute of Advanced Architectural Studies, York, June 1996.
  'Die Wiederbepflanzung Painshill Parks: Versöhnung Zwischen Kunst und Natur im Englischen Landschaftsgarten', Eisenstadt, Austria, 30 May to 1 June, 1996.
  'Gardens of the 1790s', Art Gallery of Ontario, Toronto, 25 April 1996.
  Lecture and Seminar Series: Department of Landscape Architecture, University of Pennsylvania, The John Bartram Association, Harvard University, Graduate School of Design, CASVA, Washington, DC, University of Virginia, School of Architecture, and Colonial Williamsburg, March - April 1996. 
1995 UNESCO conference on Neercaane Castle, Maastricht, 27-29 September 1995. 'Restoration projects of 17th- and 18th-century gardens in western Europe'.
  Roundtable, Dumbarton Oaks, March 1995. 'Corbeille, Parterre and Treillage: Humphry Repton's Penchant for the French style of Planting'.
1993 'The Conjectural and the Categorical in the Treatment of Historic Planting', The National Association for Olmsted Parks, The National Trust for Historic Preservation and The National Park Service symposium A Reality Check for Our Nation's Parks, St. Louis, Missouri, 28 September 1993.
  Thomas Jefferson 250 anniversary lecture, Monticello, Virginia. 23 August, 1993. 'English influences on Jefferson's planting'.
  International Symposium on the Conservation of Urban Squares and Parks: 12-15 May, 1993, Montreal. 'The private and public grounds of Rideau Hall'.
  Dumbarton Oaks Symposium: John Evelyn's 'Elysium Britannicum' and European Gardening, 14-15 May, 1993.
1992 English Heritage Seminar: Planting of Gardens 1660-1705, 26 October 1992. 'English flower borders: 1660-1735'.
  Restoration 92: Conservation, training, materials and techniques: latest development, 20-22 October 1992, Amsterdam 'Restoration of Planting in Eighteenth-Century Landscape Gardens'.
  Guest lecture at Université de Montréal, 8 April 1992 'Painshill and the Conservation of Historic Planting'.
1990 APT International Conference, 3-9 Sept. 1990, Montreal, 'Approaches to the Conservation of Historic Planting'.
  Welsh Gardens Under Threat, 2-4 April, 1990, Lampeter, Wales.
1989 'Ornamental Planting and Horticulture in English Gardens of the 18th Century', Harvard Graduate School of Design, 26 July 1989.
  Symposium on Landscape and Garden History: Issues Approaches Methods, 19-21 May 1989, Dumbarton Oaks.
  'English Gardens, 1730-1830: Ornamental Planting and the American Connection', keynote lecture to Historic Gardens Seminar, Charleston SC, 9-11 March 1989.
1987 ICOMOS International Gardens Conference: The English Landscape Park--Concept and Conservation, September 1987, Oxford.
1986 International Conference on Conserving Historic Gardens, October, 1986, Ludwigsburg, West Germany. 'Die Wiederherstellung der Bepflanzung bei Painshill Park'.
'Interpreting Historic Plants for the Public', April 1986, York.