Botanical Bookmarks

Maintenance
Links on this page are checked with the W3C Link Checker Earlier notification of broken, stale or inappropriate links is welcome as are suggestions for additional bookmarks.

Mainly plants: collections of links

• Angiosperm Philogeny Website
• Encyclopedia of Life
• Internet Directory for Botany - very comprehensive collection - USA
• Index of United States Geological Survey Sites
• Botany on-line - The Internet Hypertextbook
• The Plant List - A working list of all plant species
• International Plant Names Index (IPNI)
• Phytochemical and Ethnobotanical Databases
• Mainly plants: collected Mail Lists

Searchable Digital Libraries

• Missouri Botanical Garden Peter H. Raven Library - botanical literature
• • Botanicus.org - historical botanical literature
• British Library
• Cactus Conservation Institute
• Cactus and Succulent Plant Books Online
• DigitalBookIndex.com
• Project Gutenberg - classical literature
• Perseus Digital Library

 Mainly plants: specific topics

• CalPhotos: Browse Plant Photos by Scientific Names
• Plant Facts - University of Ohio

•  British Garden Plant Nurseries & Seed Merchants      
  Listed for reference only. No recommendation of any organisation is implied.

• Nurseries selling mainly cacti and succulent plants ... are listed separately

• Abacus Nurseries - Dahlias - mail order
• The Alpine and Grass Nursery - mail order - Lincolnshire
• Architectural Plants - large exotic and hardy plants - Surrey
• Arundel Arboretum - unique trees, shrubs, conifers - Sussex, UK
• Ashwood Nurseries - Hellebores, Cyclamen, Lewisias
• Avondale Nursery unusual herbaceous perennials - Coventry
• Avon Mill Garden Centre - Devon
• Aylett Nurseries - Hertfordshire
• Bakker - bulbs & seeds - mail order
• Bali-Hai Nursery - Hosta specialist - mail order, N. Ireland
• Barracott Plants - rare perennials - mail order, Cornwall
• Beeches Nursery - herbaceous plants - Essex
• Bernwode Plants - Rare Hardy Plants, Apple & Fruit Trees - Bucks
• 
  Big Plant Nursery - Palms, Agaves, Tree Ferns and large plants - West Sussex
• Blooms of Bressingham - Alan Blooms' Garden and Steam Museum - Norfolk
• Botanic Nursery - foxgloves, grasses, ferns, perennials, shrubs & climbers - Wiltshire
• Wildegoose Nurseries - Bouts Violas - Worcestershire
• Bowden Hostas - mail-order - Devon
• Brighter Blooms - Zantedeschia & Tulips
• Broadleigh Gardens - small bulbs & unusual perennials - Somerset
• Burncose Nurseries - mail-order - Cornwall
• Cally Gardens - Fyfe, Scotland
• Cants of Colchester - Roses
• Carpenders Park Garden Centre & Plant Nursery - Hertfordshire
• Chiltern Seeds - Cumbria
• Crocus.co.UK - wide selection of garden plants
• Crûg Farm Nursery - wide selection of garden plants
• Daisy Roots - choice & unusual hardy perennial plants - Hertford
• D'Arcy & Everest - Alpines, Herbs, Perennials - Cambs.
• Devon Violet Nursery - plants and violet products
• Dibleys - Streptocarpus, Gesneriads, Begonias - N. Wales
• Dobies Seeds
• Downderry Nursery - Lavender - Kent
• DT Brown Seeds
• Duchy of Cornwall Nursery - Flowering & Foliage plants
• Edulis Nursery & Landscape Design - Berkshire
• Enviromat - Sedum Matting
• Eurodahlia - Dahlias - mail order
• Fryer's Roses - Cheshire
• Groves Nurseries - National Collection of Viola odorata, Parma and Devon Violets - Dorset
• Grow Seed - vegetable, fruit seeds & plants - mail order
• Hardy's Cottage Garden Plants
• Harkness Roses - mail order
• Hart Canna - UK National Collection of Canna - Hants
• Harts Nursery - Lily & bulb specialists - Cheshire
• Hartside Nursery Garden - Plants with Altitude - Cumbria
• Heirloom Tomatoes & Vegetable Seeds
• Heritage Orchids - Pleiones, Cypripedium & Hardy Orchids - Bucks
• Heucheraholics - Heuchera & Heucherella, Pulmonaria - Hampshire
• Hillier Garden Centres
• Hopley's Plants
• Jacques Amand - bulbs - UK & USA
• Johnsons Seeds
• Bowdens - Hostas, hardy bamboo, ferns - mail order
• Kings Seeds
• Kevock Garden Plants - alpines, bog plants - Scotland
• Knoll Gardens grasses & perennials
• Madrona Nursery trees, shrubs, perennials, ferns & grasses - Kent
• Marshalls Seeds
• Monksilver Nursery - exotic hardy plants, bulbs, shrubs
• Mr. Fothergills Seeds
• Nicky's Nursery - Seeds including Wildflowers
• North Walsham Garden Centre - Roses, Fruit Trees
• Penberth Plants - grasses, hardy succulents, Camelias, exotics (was Trewidden)
• Pennard Plants - exotic hardy plants, bulbs
• Plantagogo.com - Heuchera & Heucherella including National Collection, alpines - Cheshire
• Plants of Distinction Seeds
• Potash Nursery - Fuchsia specialists - Suffolk
• Prestige Plants - Topiary - Suffolk
• Rare Plants
• Robinson's Mammoth Vegetable Seed
• Roseland House Garden & Nursery - Clematis & climbers - Cornwall
• Rotherview Nursery - Alpines, Troughs, Ferns, Camellias - W. Sussex
• Scotplants - Heathers, Trees, Ayreshire
• Seagate Irises - Lincolnshire
• Grasslands - shrubs, turf, ground cover - Cheshire
• Stillingfleet Lodge Garden & Nurseries - National collection of Pulmonarias - York
• Sunnybank Vine Nursery - Herefordshire
• Suttons Seeds
• Thompson & Morgan - British Seedsmen
• Trebrown Nurseries - On-line shopping for palm seeds / cycad seeds / banana seeds / other exotic plant seeds
• Trees Online - fruit, ornamental, hedging trees and shrubs
• Trevena Cross Nurseries - exotic hardy plants, bulbs
• Walkers bulbs - daffodils
• Westcountry Lupins
• Wood Cottage Nursery - Clematis, perennals, shrubs - Kent

 International Garden Plant Nurseries & Seed Merchants

Listed for reference only. No recommendation of any organisation is implied.

• Beauty Beyond Belief - wildflower and heirloom vegetable seeds - Colorado, USA
• Milliways Nurseries - Republic of Ireland
• Protea World - S. Australia
• Salt Spring Seeds - Heritage and Heirloom Seed Catalog for Organic Gardeners - Canada
• WS Warmenhoven - amaryllis, alliums, tulips - Netherlands
• Young's Garden - Sempervivums, Sedum, Succulents - Oregon, USA
•  

Garden Resources

• Access - mini greenhouses - UK
• Agriframes - fruit cages and garden supports
• AgriSeek - agricultural marketplace - bulk crop seed
• Alitex Greenhouses - UK
• Australian Nurseries Online
• Champion - timber decking, fencing, buildings - UK
• EXTOXNET - insecticides, properties, toxicity, side - effects
• Fleur de Lys - unusual conservatory plants - UK
• Greenhouses.com - UK
• Greenhouses Direct - UK
• The Greenhouse People.co.uk - UK
• Greenhouse Sensation - propagators and greenhouse accesories - UK
• Greenhouse Stores - greenhouses, sheds, summerhouses, log cabins and garages - UK
• Green Roof Shelters - UK
• Griffin Glasshouses Ltd. - UK
• Gabriel Ash Greenhouses - greenhouses - UK
• Harrod Horticultural - gardening products - UK
• The Incredibly Sensible Greenhouse Company - UK
• Marshalls - landscaping, paving, walling - UK
• Peritys - dutch light timber greenhouses - UK
• Silverland Stone - natural stone paving - UK
• Sundance Supply - Polycarbonate, Ventilation, Shade Cloth, Misting & Heating Equipment, for Greenhouses & Sunrooms
• Topiary ArtWorks and greenhouses - Kansas, USA
• Two Wests & Elliott Ltd. - UK greenhouse gardening equipment, staging
• Viresco - UK - Aquatic and Horticultural products
• White Cottage Leisure Buidings - UK
• Wienerberger Bricks - UK
• William James Fruit Cages & Garden Equipment - UK manufacturers of fruit cages and supplier of other garden equipment. Products include fruit cages, vegetable cages, timber raised beds, garden netting, water butts, patio planters, bulldog garden tools and more
• Wind and Sun Ltd. - renewable energy power systems
• WoodBlocX Raised Beds - timber raised beds and planters for gardeners
• World Climate

Garden Art

• David Goode - sculptures of goblins & fairies - UK
• Jenny Pickford - architectural ironwork - UK
• Penkridge Ceramics - ceramic fruits, vegetables & horsechestnuts - UK
• Pots and Pithoi - Cretan terracotta pots, ceramics, olive wood - UK
• Wonderland Bronze - sculptures from classic literature

 Mainly Plants: by type or genus

• Browse Plant Photos by Scientific Names - USA
• - - - - - - Carnivorous Plants - - - - - - - - - - - - - - -
• Barry Rice's Page - carnivorous plants
• California Carnivores
• Triffid Nurseries - Devon, UK
• Carnivorous Plant Database
• Hampshire Carnivorous Plants - UK - including UK natives and hardy CPs
• Hewitt-Cooper Carnivorous Plants - Somerset, UK
• International Carnivorous Plant Society
• The Carnivorous Plant Society
• PJ Plants and National Sarracenia Collection - UK
• Triffid Park - Australia
• - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

 Cacti and Succulents by Genus

• - - - - - - Adenia - - - - - - - - - - - - - - - - - - - - - -
• Adenia
• - - - - - - Adenium - - - - - - - - - - - - - - - - - - - - - -
• Adeniums of Hawaii
• The Adenium pages - desert roses
• Adenium Store - Adenium Seeds, Plumeria Seeds & Adenium Plants - UK
• The Desert Rose
• Durham Botanicals - Adenium, Plumeria - USA
• - - - - - - Agavaceae - - - - - - - - - - - -
• Agave Page - UK
• The Agave Pages - UK
• National Collection of Agave - UK
• American Agavaceae
• - - - - - - Aizoaceae / Mesembs - - - - - - - - - - - -
• Cono's Paradise - Lithops, Conophytums, Mesembs, Succulents and Cacti (Germany)
• Lithops Cultivation Guide - UK
• Achim Hecktheuer's Mesemb Site - Germany
• Mesemb Study Group - UK
• - - - - - - Aloaceae - - - - - - - - - - - -
• The Aloe Page
• Aloes
• Aloe Institute - California, USA
• Bulbine Page
• - - - - - - See also: Haworthia & Gasteria - - - - - - - - - - -
• - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
• Ariocarpus - living rocks of Mexico
• - - - - - - Asclepiadaceae - - - - - - - - - - - - - - - - -
• The Asclepiad Page
• Asclepidarium - English & German
• Plants of the Asclepiadaceae Family
• The Asclepiad Exhibition
• Butterfly Encounters - Asclepias, milkweed seeds, information & pictures
• Paul Shirley Succulents - Netherlands
• Ceropegia Journal
• East Asian Flora Web - Dischidias
• Fockea
• - - - - - - Hoya - - - - - - - - - - - - - - - - - - - - - - - -
• Christinas Hoyas - Sweden
• The Hoya Page - UK
• Hoya World
• International Hoya Society
• Hoya Society (Swedish)
• Favourite Hoyas
• Green Plant Research - Rare Hoyas - huge catalogue, many pictures - Hawaii, USA
• Variegated Hoyas
•  
• Stapeliads - Orchids of the Succulent World
• - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
• Astrophytum Home Page
• Astrophytum Lover's Resources
• - - - - - - Bromeliads - - - - - - - - - - - - - - -
• Bromeliad Encyclopedia - Florida Council of Bromeliad Societies
• - - - - - - Caudiciforms - - - - - - - - - - - - - - - - - - -
• Bihrmann's Caudiciforms
• Plantemania Caudiciforms etc. - France
• - - - - - - Coryphantha - - - - - - - - - - - - - - - - - - -
• - - - - - - Crassulaceae - - - - - - - - - - - -
• Adromischus Displayed
• American Crassulaceae
• International Crassulaceae Network
• - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
• Echinocereus Home Page (German)
• Echinocereus und Epicacteen
• - - - - - - Epiphytic Cacti - - - - - - - - - - - - - - - - - -
• Epiphyllum Society of America
• Epiphytic Plant Research and Information Center (EPRIC) - Netherlands
• Rhipsalis, Lepismium, Hatiora, Pfeiffera, Schlumbergera
• Rhipsalis
• Schlumbergera
• - - - - - - Euphorbia - - - - - - - - - - - - - - - - - - - - -
• The Spurge Page - UK
• Euphorbia
• PlantzAfrica - South African National Biodiversity Institute
• Succulent Euphorbia
• The Poinsettia Pages - not succulent but a common query
• Euphorbiaceae - medicinal / toxic substances
• Frailea Information Base
• - - - - - - Fouquieriaceae - - - - - - - - - - - - - - - - - - - - -
• The Fouquieria Page
• - - - - - - Gymnocalycium - - - - - - - - - - - - - - - - -
• Gymnocalycium - USA
• Gymnocalycium checklist - German
• The Genus Gymnocalycium - in English and German
• - - - - - - Haworthia & Gasteria - - - - - - - - - - -
• Asphodelaceae Anonymous
• The Gasteria Page
• The Haworthia Page
• Alshaworthia - France
• Haworthia Society
• Haworthia & Gasteria
• - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
• Mr. Impatiens Bizzie Lizzies - USA
• Lophophora - small Mexican species - Denmark
• - - - - - - Echinopsis / Lobivia - - - - - - - - - - - - - - - - - - - - - -
• The Genus Lobivia
• - - - - - - Mammillaria - - - - - - - - - - - - - - - - - - -
• www.mammillarias.de
• Mammillarias.net
• - - - - - - Melocactus - - - - - - - - - - - - - - - - - - -
• 35 Types of Melocactus: Melon Cactus Care and Propagation Guide
• Melocactus - Slovakia
• Melocactus - USA
• Genus: Melocactus - USA
• - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
• - - - - - - Mesembs ----> Aizoaceae - - - - - - -
• - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
• Moringa Home Page
• Morning Glory Database including Ipomoea - Japan
• - - - - - - Opuntia - - - - - - - - - - - -
• Opuntia Identification Guide and Checklist
• Opuntiads of the USA
• - - - - - - Nolinaceae - - - - - - - - - - - -
• The Beaucarnea-Calibanus clade
• The Nolina Page
• - - - - - - Palm Trees & Cycads - - - - - - - - - - - - - -
• European Palm Society
• International Palm Society
• Palm Diseases and Disorders
• Palmweb - from RBG Kew
• The Palm Tree Page
• The Palm Centre - hardy exotic plants - Richmond, UK
• Plantas Tropipalms - Palms, olive trees, exotic trees - Spain
• Trebrown Nurseries - On-line shopping for palm seeds / cycad seeds / banana seeds / other exotic plant seeds - Cornwall, UK

• The Cycad Page
• The Cycad Pages - from Michigan State University
• The Cycad Society
• The Cycad Society of South Africa
• gymnosperms.org
• The Gymnosperm Database
•  
• - - - - - - Parodia & Notocactus - - - - - - - - -
• Notocactus - synonym of Parodia
• Parodia
• - - - - - - Pediocactus & Sclerocactus - - - - - - - - -
• - - - - - - Pelargonium and Geranium - - - - - - - -
• Geraniaceae - California USA
• The Geranium Page
• Pelargonium Page - including the Geraniaceae Exchange Page
• - - - - - - Peperomia & Piperaceae - - - - - - - - - - - - - -
• peperomia.net
• The Peperomia Page
• - - - - - - Sempervivum, Jovibarba, Rosularia - - -
• Fernwood Nursery - NCCPG National Collection - UK
• Mendle Nursery - UK
• www.semper-vivum.de - Bavaria
• Sempervivophilia - multiple languages
• Sempervivum's World - Slovakia
• The Sempervivum Page - UK
• - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
• Thelocactus
• Tephrocactus - in German
• - - - - - - Turbinocarpus - - - - - - - - - - - - - -
• Turbinicarpus- cacti guide
• Turbinicarpus - care and growing
• - - - - - - Yucca - - - - - - - - - - - - - -
• Yucca - Germany
• The Yucca Page - UK
• - - - - - - Welwitschia - - - - - - - - - - - - - -
• Welwitschia Page - Namibia
• Welwitschia and Ephedra
• Welwitschia Page - Kruger Park

 Cacti & Succulents in Habitat, National Parks & Botanic Gardens

• Adelaide Botanic Gardens - Australia
• Andromeda Botanic Gardens - Barbados
• Arizona - Sonora Desert Museum - USA
• Bermuda Botanic Gardens
• Botanic Gardens Trust, Sydney - follow link to Royal Botanic Gardens - Australia
• Botanischer Garten München-Nymphenburg - Bavaria
• Botanischer Garten Bochum - Germany
• Boyce-Thompson Aboretum, Arizona - USA
• Cacti in Mexico - lots of pictures
• Cactimundo Los Cabos Botanical Gardens - San Jose del Cabo, Baja California, Mexico
• Cactus Park - Bessan, France
• Christchurch Botanic Gardens - New Zealand
• Death Valley National Park - California, USA
• Desert Botanical Garden - Phoenix, Az
• Jardín Botánico Nacional de Cuba
• Jardin Botanique de Montréal - Canada
• Jardin de Cactus - Lanzarote
• Jardin Exotique de Monaco - France
• Jardin d'Oiseaux Tropicaux - France
• Jardin Exotique de Roscoff - France
• Joshua Tree National Park - California, USA
• Complete Guide to Joshua Tree National Park
• Karoo Desert National Botanic Garden - South Africa
• Kirstenbosch National Botanic Garden - South Africa
• Linz Botanic Garden - Austria
• National Parks Service - USA
• Organ Pipe National Monument - Ajo, Az, USA
• Royal Botanic Gardens, Kew - UK
• Ruth Bancroft Garden - California, USA
• Saguaro National Park - Tucson, Az, USA
• San Antonio Botanical Gardens - USA
• Stanford Succulent Garden - USA
• San Francisco Botanical Garden - (Strybing Arboretum)
• SuccSeed - travelogues & habitat photos
• Tohono Chul Park - Tucson, Az, USA
• Tucson Botanical Gardens - Az, USA
• University of California Botanic Garden - USA
• University of Copenhagen Botanic Garden - Denmark
• University of Ghent Botanic Garden - Belgium
• University of Sofia Botanic Garden, Balchik - Bulgaria
• Zilker Botanical Garden - Austin, Tx., USA

Cactus & Succulent Plant Nurseries & Seed Suppliers

• Abbey Brook Cactus Nursery - Derbyshire UK
• Adenium Store - Adenium Seeds, Plumeria Seeds & Adenium Plants - UK
• Arid Lands Greenhouses - USA
• B&B Cactus Farm - Tucson Az. USA
• Bob Smoley's Gardenworld - plants & collectibles - USA
• Boojum Unlimited - Tucson Az. USA
• Cacti.Com Landscape Cacti and Succulents - lots of pictures - S. California USA
• Cactoo - Italy
• Cactus Art Nursery - Italy
• Cactus Heaven - Online Store - Malta
• Cactus Museum - USA

• Cactus Shop - Westfield Cacti mail-order - UK
• California Cactus Center - USA
• Conophytums from Chris Rogerson - UK
• Cono's Paradise - Lithops, Conophytums, Mesembs, Succulents & Cacti - Germany
• Croston Cacti - Lancashire UK
• de Barmon Seed List
• Smart Plants - hardy Sedums, Thyme, succulents - British Columbia
• Ecoscape NurseryCalifornia (Aloe polyphylla) - USA
• Eden Plants Haworthia, Stapeliads - Germany
• exotic-plants.de - seeds of succulent and exotic plants - Germany
• Flores Ceropegia, Hoya, Stapeliads - Germany
• Glasshouse Works - Ohio USA
• The GreenWeb - a wide variety of seeds and growing information
• Grigsby Cactus Gardens 2002 Wish List - California USA
• High Country Gardens Plants for the Western Garden and Beyond - Santa Fe NM. USA
• Hoodia Ranch - Canary Islands
• Jardin Naturel - Reunion Island
• Kakteengartnerei-A. Plapp - Bavaria
• Kakteen-Haage - Germany's oldest nursery (1822)
• Kambroo Plants - Haworthia, Gasteria, Stapeliads - Pretoria, South Africa
• Mesa Garden - New Mexico USA
• Miles To Go - lots of pictures - USA
• Mountain Crest Gardens - hardy & soft succulents - California, USA
• Navajo Country - Fritz Hochstatter's Nurtsery
• Pacific Epiphyllum Nursery - California, USA
• Paul Shirley Succulents - Specialising in Ceropegia, Hoya, Stapeliads and Epiphyllums - Netherlands
• Plantlife - Eastbourne, UK
• Rareexoticseeds - flower seeds
• Rare Plant Research - Oregon, USA
• Robinson Cactus Nursery - Wrexham, Wales
• William's Cacti - Yorkshire, UK

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• RarePalmSeeds.com - Germany
• Rio Grande Cacti cacti of the Southwestern United States - New Mexico, USA
• Silverhill Seeds - South African seed specialists
• Simply Succulents Nursery - Wisconsin
• SMG Succulents Sedum, Sempervivum - Oregon, USA
• Steven Hammer's Sphaeroid Institute - Conophytum, Haworthia etc. - USA
• SMG Succulents - Specialising in hardy succulents - Oregon, USA
• Soekershof Walkabout - nursery, maze, botanic gardens - South Africa
• Southfield Nurseries - cacti & succulents - Lincolnshire, UK
• Starr Nursery - Agavaceae, Liliaceae, and Nolinaceae - USA
• Sticky Situation - Tucson, Arizona USA - a wide range of cacti and succulents
• SuccSeed - Swedish cactus seed source - Travelogues & Habitat photos
• Thaising Ceropegias, Dischidias, Hoyas and more - Thailand
• Tobees Exotics - UK - mail order only
• Tony Irons - seedling cacti - UK
• TyTy Online Plant & Tree Nursery - Yuccas, Agaves - USA
• uhlig-kakteen - Cactus and Succulent plants and seeds
• Valley Succulents - Canada's online source for cacti and succulents
• Brookside Nursery - Asclepiads, Euphorbias, Sansevierias and more - Italy

• Gesneriads Reference Web
• - - - - - - Gourds (Cucurbitaceae) - - - - - - - - - - - - - - - - - - - -
• World Class Giant Pumpkins - how big can they get ?
• Mammoth Vegetable Seed
• - - - - - - Trees and Forestry - - - - - - - - - - - - - -
• Chart of British Trees
• Bonsai Tree Primer
• Conifer Trees
• American Conifer Society
• • Learn about Conifers
• Cycad Photo Gallery
• Forest Research
• • Forest Research - pests & diseases
• Fruit Bearing Tree List (warm climate)
• International Lilac Site
• List of North American Trees
• The Mistletoe Pages
• Tree Genes Database
• Tree Identification Guide
• Tree Species Index
• - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
• Mycoweb: - mushroom, fungi, mycology resources
• SporeWorks - purveyor of rare and exotic mushroom spores
• - - - - - - Orchids - - - - - - - - - - - - - - - - - - - - - -
• Hardy British & other hardy Orchids

Plant Conservation & Biodiversity

• CITES - Convention on International Trade in Endangered Species of Wild Fauna & Flora
• Botanic Gardens Conservation International (BGCI), at Kew
• Global Registry of Biodiversity Repositories
• Ecology & Evolutionary Biology Conservatory
• Germplasm Resources Information Network (GRIN)
• National Council for the Conservation of Plants and Gardens - UK
• South African National Biodiversity Institute
• World Conservation Monitoring Center
• - - - - - - Plant Genetics - - - - - - - - - - - - - - - -
• Maize Genome Database Project
• Maize Page
•   - - Herbaria and Botanic Gardens - - - - - - -
• Australian National Botanic Garden
• British Museum Natural History - UK
• Cambridge University Botanic Garden - UK
• Connecticut College Arboretum - USA
• Connecticut University Greenhouses - USA
• Denver Botanic Gardens - USA
• Lea Gardens - Shetlopedia - The Shetland Encyclopaedia - Shetland
• Lost Gardens of Heligan - UK
• Huntingdon Botanic Gardens - USA
• Missouri Botanical Garden - USA
• Montoso Botanical Garden - Puerto Rico
• National Botanic Garden of Wales
• Oxford Botanic Garden - and National Euphorbia Collection - UK
• Stanford's Succulent Garden - USA
• Royal Botanic Gardens Edingurgh - UK
• 
• Royal Botanic Gardens, Kew - UK
• • Botanic Gardens Conservation International (BGCI), at Kew
  • World Flora Online
  • Millenium Seed Bank project at Wakehurst Place
• 
• Consortium of California Herbaria
• South-West School of Botanical Medicine - images and information about medicinal plants
• USDA National Plants Database - searchable lists and images
• United States National Arboretum
• Vatican Exhibit Herbals

 Cactus & Succulent Societies
... listed on their own page

• Comprehensive alphabetical pages of links to:
• International Botanical Organizations