We dedicate the HIP project to the truly great grower, collector, lover, and author of indoor plants, the German-American botanist Alfred Byrd Graf whose discovery of 100 new plants and stunning, world-changing books Exotica, Tropica, and the Exotic Plant Manual changed all our lives. What other horticulturist in modern times have produced a book of 2600 pages and 16,000 images. He brought amazing, pristine, and necessary clarity to the world of tropical, house plant, and other interior plant cultivars with his thousands of images and very detailed, insightful descriptions. He stabilized nomenclature and always consulted experts in genera around the world as we do here. We wish he were still writing interior plant books with all the new cultivars and in his spirit this project is warmly presented. Please take a minute to read about his life and work: https://www.nytimes.com/2002/01/21/us/alfred-graf-100-botanist-and-author-of-plant-books.html

Best of all, HIP is not only on the web but you can download the PDF files for free to put them on your phone, tablet, laptop, or ebook reader. It goes everywhere you need this kind of reference - in the garden, greenhouse, classroom, client's site, vehicle, and home.

Just click on the genera names below and a PDF will load on your screen.

YOUR AD HERE....yes literally. Email us at ornamentals@lycos with "HIP Ad" in the subject line to receive a rate card. Reach tens of thousands of motivated plant buyers for fair, affordable rates. Standard banner-sized ads will appear here and link to the site or pages of your choice.
Help expand HIP with more plants, more images, new research!
Donations start at US$1.00 while $100.00 gives you access to free, licensed images for your own sites and projects.

Acalypha - Brugmansia 
REVISED 10.11.2020, 10.24.2020
289 pages
Have we figured out the complex, confusing cultivars of Alternanthera? Not fully but our 87 cultivar descriptions, detailed nomenclatural studies, literature reviews back to 1860, and loads of detailed images from documented collection will surely help improve our understanding and create a dialog for future clarifications. This genus was just added from our old annual/bedding plant system.

This last update adds more Aglaonema cultivars and images but our focus here of late has been the compilation of 95 different Alocasia cultivars, corrected names, more synonyms, our original research,  and many more images, some dating to the 19th century from old manuscripts.

NEW FILE 9.26.2020 moved from Hatch's Perennials
More than 630 names and synonyms of cultivars, the very most complete cultivar study we've ever done and lots of very wide, high resolution images, full of source links and history of cultivars too. There is more to do and we're working on adding even more cultivars as they appear. For even more images we highly recommend Tony Avent's PDN insanely wonderful Agave galleries (three of them) here: https://www.plantdelights.com/apps/photo-gallery
We're working on a new Aloe cultivar checklist with detailed descriptions, links to originator's sites, sources for buying, and images. The first draft will be about 275 different cultivars. Please write us if you have a special Aloe cultivar to share with the international audience. We are interested in everything from smaller, even dwarf houseplant types to the massive outdoor landscaping clones.

Genera C
255 pages
REVISED 11.4.2020, 11.22.2020
Added various new cultivars, especially in Caladium and a sizeable update to Crassula. Most recently we updated Callisia with new and cultivars, also Chlorophytum.

Coleus (International Register)
now more than 1600 different cultivars, including those from 1859 to present times. Through the aid of the the International Coleus Society, this authoritative register is far more complete than any Coleus book and is an "all in" approach that puts all we know about individual cultivars in one place; images, descriptions, nursery catalog scans, histories, cultivar trial reports, and identification tips.

Darlingtonia - Exceocaria  REVISED 9.19.2020
Now 33 cultivars of Epipremnum, not including synonyms

Euphorbia pulcherrima (Poinsettia)
Check out these new 2021 cultivars with bracts in light green and a true amber-gold, both naturally colored by their genetics (no paint, no dye, no glitter). Put the 'Early Green Envy' against one of the vanilla-toned whites and the 'Golden Glo' with pinks and reds....watch out! Awesome.

Ficus - Gynura REVISED 9.28.2020, 11.9.2020
79 pages
Added x Fatshedera and Fatsia, big expansion of Ficus to now 142 cultivars, the most you will find described anywhere, lots of new images too. Just added Gasteria and x Gasteraloe too.

Haemaria - Ixora

Hedera helix Cultivars A to L MAJOR REVISION 11.17.2020
154 pages

Hedera (valid for all cultivars except H. helix A to L)
See list below under OROC below for a list of 26 newly registered ivies. Most were originally published in our woody plant registers available free at cultivar.org and many include very large, detailed color images.To learn about the latest cultivars with huge images start with the file here: orocwoodyhm.pdf

Hedera is undergoing a major revision since the 2010 Version of the IVYfile as we have long called the illustrated guide to over 400 cultivars, many of them rare and not found in the leading ivy books and websites. If you have a new cultivar to share please email us for it's inclusion.

Jatropa - Myrtillocactus REVISED 3.6.2021
83 pages
Now with even more Monstera (12 cultivars), Maranta (22 cultivars), MIcrosorum, and other genera, covering some not reported before in general literature or social media
Nematanthus - Oxalis  REVISED 10.31.2020
106 pages
Now 171 different Nephrolepis cultivars, many new images and historical plates, more than any reference we know. Some new research has determined that the original N. exaltata 'Childsii' from 1918 is almost identical to the cultivar grown today as 'Emina' ('Erecta', 'Curly Boston' in part, 'Curly Locks', 'Miniature Crested') and not the 'Childsii' in Benedict's papers. Have a look and see if you agree, comparing the modern material to the 1918 and 1919 data.
Pachira - Pteris REVISED 10.10.2020, 1.1.2021, 4.10.2021
New cultivars and corrections added. Loads of new Peperomia, Pilea, Plectranthus, Philodendron and more, 14 cultivars of Portulacaria. The new Peperoma scandens (serpens?) 'Silver Haze' is shown below. This is our official nomenclatural standard, published here for worldwide documentation.
Pelargonium including scented taxa NEW FILE 8.23.2020
Radermachera - Spathoglottis REVISED FILE 10.18.2020
121 8 x 16 in. PDF pages
Now 202 different cultivars of Sansevieria and many more synonyms, lots of new images too. If you need clarity on the S. trifasciata clones this is a good resource.


Syngonium REVISED FILE 1.23.2021
Now with 242 different cultivars and lots more synonyms - by the far the most of any reference in any medium.

Theobroma - Zingiber  REVISED 9.20.2020, 10.10.2020
Now with 13 distinct Zamioculcas cultivars, including images and their patent data,
more Tradescantia names and cultivars from historial and modern catalogs
Contact Us (email) - general comments, corrections, suggestions, ad rates
How to get more out of HIP: 
  1. Learn the data field (character state) abbreviations found here. Some are obvious like ht=height, ha=habit, lc=leaf color, but we use more than 140 to describe plants in detail
  2. Get the best PDF browsers for each device. The best phone or tablet browers may not be the best for a laptop or 45 inch screen.
  3. Use your PDF browers + and - magnification buttons, especially with a small screen device to blow up the picture. Most of our images can be expanded up to 300% because of the quality cameras used. You will get more detail on each leaf, flower, hair, or markings this way.
  4. Download the individual PDF files (including the updates when announced) to your device for faster loading as the internet adds time, especially with the bigger files. You really can take it all with you and even blow up the images in most cases 2-3x.
  5. Share, Share. Share. Write us and if you can submit a new plant, image, observation, and such.
How to submit a new plant: email us with as full a description as possible, measure leaves or flowers and height if possible, comparisons to other species or cultivars, details of origin, and if possible a link or two where it is sold or further info (cultivar introduction, article, orignator's page). If you own the copyright of a JPG image and wish to donate it to this project in the public interest we thank you and your contribution will be acknowledged. Your submission will be submitted to a trained Cultivar Registrar with the Open Registration Of Cultivars (OROC) program and acknowledged. You must put "OROC" or "new cultivar" in the subject line to assure prompt consideration.

OROC list of excluded genera (these are registered by other organizations and societies in the ISHS/ICRA system). We do not accept cultivar registrations in the following genera. However, we will eagerly add these plants to the encyclopedia as general entries minus cultivar registratin: Aroids (all), Begonia, Gesneriads (including Saintpaulia),Australian natives, Fuchsia, Clivia, Epiphyllum, Pelargonium, Passiflora, Hibiscus, and Plumeria.
Want other plant groups like this? our woody plant and hardy perennials projects are actually older and even more mature than HIP and are available by visiting www.cultivar.org. Hatch's Cultivars of Woody Plants is used by the majority of woody plant experts worldwide and covers over 6500 PDF pages while Hatch's Perennials is over 3000 page, all with loads of high-resolution, digital images to 1250 pixels ride, detailed descriptions, source links, histories, literature citations, and more.
How do I cite this as reference? There are several different formats for academic literature citation so follow the system preferred by your organization or institution. This is one approach.

Hatch, Laurence C. (Editor). [year accessed]. Hatch's Interior Plants. [filename] [page number]. Http://www.cultivar.org, accessed [date, time], Cary, North Carolina USA.

for example:

Hatch, Laurence C. (Editor). 2020. Hatch's Interior Plants. Genera P, hipp.pdf, page 41. Http://www.cultivar.org, accessed October 10, 2020, 17:18EST, Cary, North Carolina USA.

Please do not link to individual files as those names will change over time.
Can I reuse, copy, or pin images from the files? Pin or copy without communication? No. Every image in our files is copyrighted and pinning is a violation of that law without the owner's permission. Just citing your pin source does not change the rights of copyright holder and never has. Pinterest and Google have and will continue to remove our images that are pirated or stolon by their users and there is no "fair use" exception. We regret we've have images removed over twenty times. In general, if a website does not have a "Pin" icon to encourage you to copy and post, their copyright prevents you from doing so in a legal manner.

How can I legally use an image? About 99% of the images in HIP are copyright owned by the Editor or cultivar.org. The others we give credit to the contributor, many of which are nurseries, breeders, or growers wishing to distribute their images for promotional purposes. You can email those parties on your own or visit their website to see their process. If there is no stated external credit, email us (ornamentals@lycos.com) with the name of the taxon you desire. There will be no charge for a license to use the image(s) if you are registered if you are donor or  supporter of this site at the $100.00 level or higher but we cannot accept all requests. Donors at the $100 level can receive up to 10 licensed images for their use at no cost. Now that's a bargain! We do not sell images. 

In conjunction with our OROC project which also registers woody plant and herbaceous perennials, we are pleased to list the following tropical, interior, and house plant cultivars recently catalogued by the experts. If you're are rare plant collector this is a very nice list to dream with. Your new cultivar when accepted and verified will appear both here and in our encyclopedia files above.

OROC was created in 2014 by a group of concerned plant experts, taxonomists, growers, breeders, scholars, collectors, and design professionals that the current international cultivar registration system had failed. The Plant Patent and Plant Breeders Rights database work to some extent but exclude thousands of unique, rare, and less commercially available cultivars. Less than 2% of new woody plants, 5% of herbaceous perennials, and even fewer ornamental interior plants (except bromeliads, gesneriads and aroids) were being clarified, documented, and evaluated for their distinctiveness, nomenclature, origins, and identification. OROC has produced several Registers over the last few years, all 100% free of charge. More than 102,000 views and downloads of these Registers confirms the value and need for this kind of cultivar level documentation.

The newest registrations are at the bottom in red.

PEPE001 - Peperomia albovittata 'Piccolo Banda'.
PEPE002 - Peperomia 'Peppermill'
PEPE003 - Peperomia albovittata 'Rana Verde'
PEPE004 - Peperomia angulata 'Rocca Schura'
PEPE005- Peperomia angulata 'Rocca Verde'
PEPE006 - Peperomia argyreia 'Diamond Nebula'
PEPE007 - Peperomia argyreia 'Harmony's Gold Dust Woman'
PEPE008 - Peperomia caperata 'Alricos Ripple'
PEPE009 - Peperomia (caperata x 'Eden Rosso') 'Brasilia'
PEPE010 - Peperomia caperata 'Harmony's Midnight Wave'
PEPE011 - Peperomia (caperata x 'Eden Rossa') 'Mendoza'
PEPE012 - Peperomia caperata 'Steve's Leaves Chameleon'
HEDE001 - Hedera helix 'Nilita'
HEDE002 - Hedera helix 'Yarik'
HEDE003 - Hedera helix 'Papa Yena'
HEDE004 - Hedera helix 'Eny'
HEDE005 - Hedera helix 'Sasha'
HEDE006 - Hedera helix ‘Tattoo Ripple’
HEDE007 - Hedera helix ’Minisonja’
HEDE008 - Hedera maroccana ‘Neon’ (popularly H. algeriensis)
HEDE009 - Hedera helix 'Andreas' 
HEDE010 - Hedera helix 'Konstanin Eftov'
HEDE011 - Hedera helix 'Laurence'
HEDE012 - Hedera helix 'Darth Vader'
HEDE013 - Hedera helix 'Petrovich'
HEDE014 - Hedera helix 'Bizar'.
HEDE015 - Hedera maroccana 'Nabar-Nabar'
HEDE016 - Hedera maroccana 'Ederalai'
HEDE017 - Hedera helix 'Frisé'
HEDE018 - Hedera helix 'Troll Pananché'
HEDE019 - Hedera helix 'Irina'
HEDE020 - Hedera helix 'Hulk'
HEDE021 - Hedera helix [Green Ripple Group] 'Cary Green'
HEDE022 - Hedera helix 'Jake'  
HEDE023 - Hedera helix [Birdsfoot Group] 'Courage'
HEDE024 - Hedera helix 'Sally'
HEDE025 - Hedera helix 'Seabreeze'
HEDE026 - Hedera helix 'Ballet'
SENE001 - Senecio articulatus 'Candlelight'
PILE001 - Pilea cadierei 'Cream Theme'
PILE002 - Pilea (aff. hitchcockii)  'Dark Mystery'
PILE003 - Pilea libanensis 'Silver Sprinkles'
PLEC001 -  Plectranthus ciliatus 'Easy Gold' ('Lemon', 'Lemon Gold')
PLEC002 - Plectranthus ciliatus 'Troy's Gold' ('Lemon Lime', 'Limelight')
PORTUL001 - Portulacaria afra 'Golden Moments'
PORTUL002 - Portulacaria afra 'Lilliput'
ASPL001 - Asplenium nidus 'Hurricane'
SANS001 - Sansevieria trifasciata 'Night Owl'
KALA001 - Kalanchoe (longiflora or sexangularis?) 'Fire Rainbow'
AEON001 - Aeonium castello-paivae 'Suncup'
ACAL001 - Acalypha wilkesiana 'Ceylon Lime'
AEON001 - Aeonium decorum 'Triple Crest'
CALL001 - Callisia repens 'Copper Jewel' ('Aurea', 'Gold', 'Bronze', etc.)
HEDE027 - Hedera helix 'Coal Miner'
PORTUL003 - Portulacaria afra 'Manny'
SANS001 - Sansevieria trifasciata [Hahnii Group] 'Radiant Star'
SANS002 - Sansevieria trifasciata 'Night Owl'
SANS003 -
Sansevieria trifasciata 'Kristi'
SANS004 - Sansevieria trifasciata 'Black Limon'
SANS005 -
Sansevieria trifasciata 'Spearmint'
SANS006 - Sansevieria trifasciata 'Green Mermaid'
SANS007 - Sansevieria aubrytiana 'Yellowstone'
SANS008 - Sansevieria trifasciata 'Black Princess Sandy'
SANS009 - Sansevieria trifasciata [Hahnii Group] 'Forest Star'
PEPE013 - Peperomia scandens 'Silver Haze'
CRAS001 - Crassula atropurpurea var. arborescens CURLY GREEN
CRAS002 - Crassula ovata 'Minova Minor'
CERO001 - Ceropegia linearis subsp. woodii 'Silver Glory'
Chlorophytum comosum 'Bonnie Green'
Chlorophytum comosum 'Irish Green'
Chlorophytum comosum 'Irish'
Chlorophytum comosum 'Hawaiian'
Syngonium erythrophyllum 'Llano-Conti Road'
Syngonium erythrophyllum 'Ice Frost'
Syngonium podophyllum 'Red Spot Tricolor'
Philodendron 'Red Moon'
Philodendron scandens f. scandens 'Gabby'
Philodendron scandens f. scandens 'Rio'
Philodendron scandens f. scandens 'Cream Splash'
Philodendron pedatum 'Glad Hands'
Philodendron 'Red Heart'
Philodendron 'Florida Ghost' (may='Florida Beauty White', an established name)
Philodendron 'Whipple Way'
Philodendron 'Black Cardinal Variegated'
Hedera helix 'Lakeview Yellow'
Alocasia x amazonica 'Loco'
Alocasia 'Architexture'
Syngonium podophyllum 'T25 Dwarf Variegated'
Syngonium podophyllum 'Aom Nak'
Syngonium podophyllum 'Brocante'
Syngonium podophyllum 'Green Splash'
Syngonium podophyllum 'Magic Marble' ('Three Kings')
Syngonium podophyllum 'Milk Confetti'
Syngonium podophyllum 'Mojitio'
Syngonium podophyllum 'Panda'
Syngonium podophyllum 'Red Spot Tricolor'
Syngonium podophyllum 'Slim Shady;
Syngonium podophyllum 'Strawberry Ice'
Syngonium podophyllum 'Holly Ribbon'
Syngonium podophyllum 'Yellow Neon'
Ficus natalensis subsp. lepireurii (triangularis) 'Coconut Cream'
Ananas comosus 'Elite Gold'
Peperomia rugosa 'Aussie Gold'
Hoya carnosa (Compacta Group) 'Jodie's Silver'
Peperomia metallica 'Galaxy'
Ficus pumila 'Ice Caps'
Aphelandra squarrosa 'White Wash'