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Seth J. Gillihan – Canada

Seth J. Gillihan, PhD, is a licensed psychologist and clinical assistant. professor of psychology in the Psychiatry Department at the University of Pennsylvania. He offers online courses in mindfulness-centered cognitive behavioral therapy (CBT) in the Think Act Be School. Dr. Gillihan hosts the weekly Think Act Be podcast and is the author of the free e-guide, “10 Ways to Manage Stress and Anxiety Every Day.” His publications include journal articles, book chapters, and self-guided books on CBT for anxiety, trauma, depression, and related concerns.

Matt Coulter – Australia

Matt Coulter has worked in the horticultural nursery industry for the past 35 years. Matt is currently the curator of Plant Propagation at the Adelaide, Mount Lofty and Wittunga Botanic Gardens managing the propagation and growing of new plant material for the Gardens.

Matt is widely known for his innovative work in propagating one of the world’s most fascinating plants – the Amorphophallus titanum. Matt’s work has seen the Botanic Gardens and State Herbarium of South Australia amass one of the world’s largest collections of this threatened species.

Crispin Boxhall – Australia

Des Bettcher – Australia

Des Bettcher is President of the Orchid Club of South Australia, Past President of the Cymbidium Orchid Club of South Australia Inc., Past President of the South Australian Orchidaceous Society Inc., Part owner of Adelaide Orchids with his children.

Growing orchids for 48 years, his interests include orchid judging, orchid breeding and orchid photography. He has extensive knowledge of Orchids but this article is about the growing medium and his experiences as a grower for five decades. He has conducted a premier Orchid Nursery and exports plants around the world. Des is passionate about what he grows and is determined to help as many of us, grow plants to the best of our ability, as he does.

Shirley Briñas Sanders – Philippines

Shirley Briñas Sanders was born on August 21, 1954. A Leo at heart, she has always been a leader among her family, friends, and colleagues. True to her nature, at the age of 27 and still a single, young woman, she established her business of landscaping, which has grown into one of the most sought-after landscape firms in the Philippines.

The simple enterprise of a very determined woman evolved into the company now known as Landscapes By Sanders Inc. Her love of gardens and landscaping has made her one of the most respected landscape artists in the industry. Although she doesn’t have a degree in Landscape Architecture, since it wasn’t offered in the universities of the Philippines at that time, and instead she earned her Bachelor of Science in Medical Technology, she has been doing landscapes like a pro for more than 35 years now.

Her innate artistry of putting together the colors, shapes, and textures of flora in a landscape makes her in-demand and well-appreciated. Her aesthetic sensibility of gardens is very keen that she visualizes how plants are to be arranged to create beautiful and sustainable landscapes. Sometimes, she even dreams of her landscape designs, which are the stuff of many of her implemented works.

SHIRLEY SANDERS had been invited to international garden shows and competitions firstly as an exhibitor. Her landscape creations were featured in landscape expos in Brunei, China, Dubai, France, Italy, Netherlands, and Thailand where she earned 1st and 2nd prizes. Then she became a member of the international juries for the EUROFLORA 2001 and 2006 (Genova, Italy), FLORALIES INTERNATIONALES 2009 and 2014 (Nantes, France), FLORISSIMO 2000 (Dijon, France), and ILIAS 2011 (Singapore).

She is also generous in sharing her knowledge of landscaping to those who wish to learn this beautiful art. She lectured at the Technology and Livelihood Resource Center (TLRC) and at the Center for International Trade Expositions and Missions (CITEM) Philippines from 1997 to 1999. She talked in seminars organized and sponsored by the Department of Trade and Industry and the USAID from 1998 to 2002. Over the years, she has been invited by local governments all over the Philippines to conduct workshops on Practical Gardening and Sustainable Landscapes. She speaks at and coordinates with the Technical Education and Skills Development Authority (TESDA) in developing a technical course on landscaping. She contributed some articles on landscaping to the Manila Bulletin Home and Garden section in 2012.

Johan Wentzel – South Africa

Johan Wentzel  has belonged to the following: South African Institute of Landscape Architects, (ILASA), South African Nurserymen Association (SANA), The Wetland Society of South Africa and Land Rehabilitation Society of South Africa. He is still a guest lecturer at the University of Pretoria in Landscape Architecture.

Johan currently runs a wholesale nursery called Wildflower Wholesale Nursery. He specialises in indigenous plants from South Africa that occur in the cooler grassland areas. The target market is landscape architects, property developer, nature conservation areas and game farms.

All created landscapes, including gardens, are artificial, but we should aim to make them ecologically meaningful. It is very important to remember that we are also part of the ecology.



Julian Slade – Australia

Julian Slade  belongs to Lilium & Bulb Society of South Australia, North American Rock Garden Society and the Scottish Rock Garden Club. He works for the South Australian Government.

Julian is a grower and collector of primarily South African bulbs. He also has a substantial collection of Eurasian genera (especially Allium, Crocus, Fritillaria, Narcissus and Tulipa) as well as bulbs from the eastern USA (especially Allium and Calochortus), Chile and Australia (with Wurmbea being my favourite native genus). Currently focusing on insufficiently-known genera such as Albuca s.l. and Massonia. He has collaborated on two nomenclature papers on Massonia as well as being co-author of a new genus of Hyacinthaceae (Iosanthus).

Julian is the principal of Spes Bona Seeds (on Facebook) where he post photos from his garden and field trips, and sell excess seeds to help fund his travels


Kerin-Lea Hall – Australia

My name is Kerin-Lea and I am the Tassie end of the business. I am horticulturist and graphic artist. My first love are the plants from North America. I have no idea why. I have a large block that is completely planted out (who needs grass?). That is why you will see a lot of sweet peas being grown in amongst my existing garden beds. I also have a dedicated sweet pea growing area. In this area, my sweet peas are grown in raised beds.

Not only do I have a large flower garden but also a large kitchen garden. We loooooove to cook. I love to forage and therefore deliberately don’t have neat rows of plants (much more fun this way). I have an interest in using more unusual plant material when cooking. For example I make lilac syrup, honeysuckle cordial and of course elderflower cordial. If I can ever bring myself to do it, I want to make peony jelly. I also supply the restaurants in Launceston with edible flowers, under the name of Forgotten Edibles.

I am always more than happy to attend garden clubs to do presentations and my garden is available to be booked for tours.

What little time I have left is spent working on my graphic art. I design botanical artwork and prints for wallpaper, fabric, clothing and homewares.

Steve Jackson – Australia

Steve Jackson belongs to The Aroid Society of Australia inc. and the International Aroid Society.

He is a retired nurseryman. When he says retired, he doesn’t get paid! He still run 3 greenhouses filled to bursting with tuberous Aroids selling most of his product via eBay under his name aus-plant.

Steve’s field of expertise is Tuberous Aroids, in particular Amorphophallus and Dracontium. I am very interested in the hybridization of Amorphophallus and have several exceptional hybrids growing successfully.
He is currently researching Pseudohydrosme gabunensis, an amazing African rhizomatous Aroid with a most wonderful bloom. He has made some useful observations regarding propagation of this species which has been , to date, difficult to multiply.
He also has a long background in Carnivorous plants as he ran a wholesale nursery specializing in Carnivorous plants for many years in Victoria.